MUSSELp
 
MUSSELpdb
 
 
Taxonomy
 
 
Geography
 
 
 

Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Search the database pages:

Bivalvia | Unionida | Unionoidea | Unionidae | Unioninae | Unionini | Oxynaiina

genus Schistodesmus Simpson, 1900: cladomics
     5 Recent valid species (6 total species)

Cladomics Summary

number of species = 5 (6 total)
analyzed in 96 cladograms in 57 publications
maximum number of terminals in an analysis = 5 (mean = 1.95, median = 2)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 52
maximum number of included terminals = 5, (mean = 2.75 median = 3)
proportion of cladograms that support basic monophyly = 0.98


Pairwise Cladogram Clustering

The graphs below depict in two dimensions all pair-wise ingroup distances within the cladome. See the Cladmoics FARQ for more information.


PCoA Ordination


NJ Tree


Wang et al., 2025 [Publ 4488], fig. 3B

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
5535601840
  +-------------------- Pseudocuneopsis           
  |                                               
--+  +----------------- Nodularia                 
  |  |                                            
  +--+              +-- Tchangsinaia              
     |  +-----------+                             
     |  |           +-- Cuneopsis                 
     +--+                                         
        |  +----------- Schistodesmus_spinosus **    
        +--+                                      
           |  +-------- Schistodesmus_tongpenensis **
           +--+                                   
              |  +----- Schistodesmus_xinyuensis **  
              +--+                                
                 |  +-- Schistodesmus_lampreyanus ** 
                 +--+                             
                    +-- Schistodesmus_luqiaoensis ** 

Campbell & Lydeard, 2026 [Publ 4810], fig. 6-14

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
2202629306--
        +----- Nodularia                
  +-----+                               
  |     |  +-- Schistodesmus_lampreyanus **
  |     +--+                            
  |        +-- Schistodesmus_spinosus **   
--+                                     
  |        +-- Tchangsinaia             
  |  +-----+                            
  |  |     +-- Inversiunio              
  +--+                                  
     |  +----- Pseudocuneopsis          
     +--+                               
        |  +-- Diaurora                 
        +--+                            
           +-- Cuneopsis                

Wu et al., 2026 [Publ 4811], fig. 4

iTtTbiriSoTroTroSiD
5535901540
  +-------------------- Pseudocuneopsis           
  |                                               
--+  +----------------- Nodularia                 
  |  |                                            
  +--+              +-- Tchangsinaia              
     |  +-----------+                             
     |  |           +-- Cuneopsis                 
     +--+                                         
        |  +----------- Schistodesmus_spinosus **    
        +--+                                      
           |  +-------- Schistodesmus_tongpenensis **
           +--+                                   
              |  +----- Schistodesmus_xinyuensis **  
              +--+                                
                 |  +-- Schistodesmus_lampreyanus ** 
                 +--+                             
                    +-- Schistodesmus_luqiaoensis ** 

Hou et al., 2025 [Publ 4445], fig. 5

iTtTbiriSoTroTroSiD
5535481740
  +-------------------- Pseudocuneopsis           
  |                                               
--+  +----------------- Nodularia                 
  |  |                                            
  +--+              +-- Tchangsinaia              
     |  +-----------+                             
     |  |           +-- Cuneopsis                 
     +--+                                         
        |  +----------- Schistodesmus_spinosus **    
        +--+                                      
           |  +-------- Schistodesmus_tongpenensis **
           +--+                                   
              |  +----- Schistodesmus_xinyuensis **  
              +--+                                
                 |  +-- Schistodesmus_lampreyanus ** 
                 +--+                             
                    +-- Schistodesmus_luqiaoensis ** 

Hou et al., 2025 [Publ 4445], fig. 4

iTtTbiriSoTroTroSiD
55352212
  +-------------- Cuneopsis                 
--+                                         
  |  +----------- Schistodesmus_tongpenensis **
  +--+                                      
     |  +-------- Schistodesmus_spinosus **    
     +--+                                   
        |  +----- Schistodesmus_xinyuensis **  
        +--+                                
           |  +-- Schistodesmus_lampreyanus ** 
           +--+                             
              +-- Schistodesmus_luqiaoensis ** 

Huang et al., 2019 [Publ 3843], fig. 2

iTtTbiriSoTroTroSiD
4414196832
     +----- Nodularia                 
  +--+                                
  |  |  +-- Tchangsinaia              
  |  +--+                             
--+     +-- Cuneopsis                 
  |                                   
  |  +----- Schistodesmus_spinosus **    
  |  |                                
  +--+  +-- Schistodesmus_xinyuensis **  
     |  |                             
     +--+-- Schistodesmus_tongpenensis **
        |                             
        +-- Schistodesmus_lampreyanus ** 

Huang et al., 2019 [Publ 3843], fig. S1

iTtTbiriSoTroTroSiD
442443831
  +----------------- Nodularia                 
--+                                            
  |  +-------------- Tchangsinaia              
  +--+                                         
     |  +----------- Cuneopsis                 
     +--+                                      
        |  +-------- Schistodesmus_spinosus **    
        +--+                                   
           |  +----- Schistodesmus_tongpenensis **
           +--+                                
              |  +-- Schistodesmus_lampreyanus ** 
              +--+                             
                 +-- Schistodesmus_xinyuensis **  

Huang et al., 2019 [Publ 3843], fig. S4

iTtTbiriSoTroTroSiD
4424196831
  +-------- Schistodesmus_spinosus **    
--+                                   
  |  +----- Schistodesmus_tongpenensis **
  +--+                                
     |  +-- Schistodesmus_xinyuensis **  
     +--+                             
        +-- Schistodesmus_lampreyanus ** 

Huang et al., 2019 [Publ 3843], fig. 1

iTtTbiriSoTroTroSiD
442441831
           +-------- Schistodesmus_spinosus **    
  +--------+                                   
  |        |  +----- Schistodesmus_tongpenensis **
  |        +--+                                
  |           |  +-- Schistodesmus_xinyuensis **  
--+           +--+                             
  |              +-- Schistodesmus_lampreyanus ** 
  |                                            
  |  +-------------- Nodularia                 
  +--+                                         
     |  +----------- Cuneopsis_rufescens       
     +--+                                      
        |  +-------- Tchangsinaia              
        +--+                                   
           |  +----- Cuneopsis_celtiformis     
           +--+                                
              |  +-- Cuneopsis_szechenyii      
              +--+                             
                 +-- Cuneopsis_heudei          

Chen et al., 2025 [Publ 4487], fig. 2

iTtTbiriSoTroTroSiD
3313381062
                 +-- Tchangsinaia              
  +--------------+                             
  |              +-- Inversiunio               
  |                                            
--+              +-- Cuneopsis                 
  |  +-----------+                             
  |  |           +-- Pseudocuneopsis           
  +--+                                         
     |  +----------- Nodularia                 
     +--+                                      
        |  +-------- Diaurora                  
        +--+                                   
           |  +----- Schistodesmus_spinosus **    
           +--+                                
              |  +-- Schistodesmus_xinyuensis **  
              +--+                             
                 +-- Schistodesmus_tongpenensis **

Campbell & Lydeard, 2026 [Publ 4810], fig. 3_5

iTtTbiriSoTroTroSiD
33131381842
              +-- Tchangsinaia             
  +-----------+                            
  |           +-- Cuneopsis                
--+                                        
  |  +----------- Pseudocuneopsis          
  +--+                                     
     |  +-------- Nodularia                
     +--+                                  
        |  +----- Schistodesmus_spinosus **   
        +--+                               
           |  +-- Schistodesmus_lampreyanus **
           +--+                            
              +-- Schistodesmus_xinyuensis ** 

Chen et al., 2023 [Publ 4302], fig. 2

iTtTbiriSoTroTroSiD
3313381162
  +-------- Diaurora                  
--+                                   
  |  +----- Schistodesmus_spinosus **    
  +--+                                
     |  +-- Schistodesmus_xinyuensis **  
     +--+                             
        +-- Schistodesmus_tongpenensis **

Wu et al., 2023 [Publ 4339], fig. 4_S5-aa

iTtTbiriSoTroTroSiD
331393942
              +-- Nodularia                
  +-----------+                            
  |           +-- Pseudocuneopsis          
--+                                        
  |  +----------- Tchangsinaia             
  +--+                                     
     |  +-------- Cuneopsis                
     +--+                                  
        |  +----- Schistodesmus_spinosus **   
        +--+                               
           |  +-- Schistodesmus_lampreyanus **
           +--+                            
              +-- Schistodesmus_xinyuensis ** 

Wu et al., 2024 [Publ 4350], fig. 8b_S2

iTtTbiriSoTroTroSiD
331389942
  +----------- Nodularia                
  |                                     
  +----------- Pseudocuneopsis          
--+                                     
  |        +-- Tchangsinaia             
  |  +-----+                            
  |  |     +-- Cuneopsis                
  +--+                                  
     |  +----- Schistodesmus_spinosus **   
     +--+                               
        |  +-- Schistodesmus_lampreyanus **
        +--+                            
           +-- Schistodesmus_xinyuensis ** 

Chen et al., 2025 [Publ 4487], fig. 3

iTtTbiriSoTroTroSiD
3313381062
                    +-- Tchangsinaia              
  +-----------------+                             
  |                 +-- Inversiunio               
--+                                               
  |  +----------------- Pseudocuneopsis           
  +--+                                            
     |  +-------------- Cuneopsis                 
     +--+                                         
        |  +----------- Nodularia                 
        +--+                                      
           |  +-------- Diaurora                  
           +--+                                   
              |  +----- Schistodesmus_spinosus **    
              +--+                                
                 |  +-- Schistodesmus_xinyuensis **  
                 +--+                             
                    +-- Schistodesmus_tongpenensis **

Wu et al., 2022 [Publ 4238], fig. 3

iTtTbiriSoTroTroSiD
331371942
  +-------------- Pseudocuneopsis          
  |                                        
--+  +----------- Nodularia                
  |  |                                     
  +--+        +-- Tchangsinaia             
     |  +-----+                            
     |  |     +-- Cuneopsis                
     +--+                                  
        |  +----- Schistodesmus_spinosus **   
        +--+                               
           |  +-- Schistodesmus_xinyuensis ** 
           +--+                            
              +-- Schistodesmus_lampreyanus **

Huang et al., 2019 [Publ 3843], fig. S3

iTtTbiriSoTroTroSiD
3313195832
  +----------- Nodularia                 
  |                                      
--+        +-- Tchangsinaia              
  |  +-----+                             
  |  |     +-- Cuneopsis                 
  +--+                                   
     |  +----- Schistodesmus_tongpenensis **
     +--+                                
        |  +-- Schistodesmus_xinyuensis **  
        +--+                             
           +-- Schistodesmus_lampreyanus ** 

Wu et al., 2022 [Publ 4238], fig. 2e

iTtTbiriSoTroTroSiD
331315642
  +----------------- Pseudocuneopsis          
--+                                           
  |  +-------------- Nodularia                
  +--+                                        
     |  +----------- Tchangsinaia             
     +--+                                     
        |  +-------- Cuneopsis                
        +--+                                  
           |  +----- Schistodesmus_spinosus **   
           +--+                               
              |  +-- Schistodesmus_lampreyanus **
              +--+                            
                 +-- Schistodesmus_xinyuensis ** 

Lopes-Lima et al., 2020 [Publ 4080], fig. 2-4

iTtTbiriSoTroTroSiD
33131191542
  +----------- Nodularia                 
  |                                      
--+  +-------- Cuneopsis                 
  |  |                                   
  |  |     +-- Tchangsinaia              
  +--+-----+                             
     |     +-- Inversiunio               
     |                                   
     |  +----- Schistodesmus_spinosus **    
     +--+                                
        |  +-- Schistodesmus_xinyuensis **  
        +--+                             
           +-- Schistodesmus_tongpenensis **

Wu et al., 2023 [Publ 4339], fig. 4_S5-nt

iTtTbiriSoTroTroSiD
386393949
  +-------------- Pseudocuneopsis          
  |                                        
--+  +----------- Nodularia                
  |  |                                     
  +--+        +-- Schistodesmus_lampreyanus **
     |  +-----+                            
     |  |     +-- Cuneopsis                
     +--+                                  
        |  +----- Tchangsinaia             
        +--+                               
           |  +-- Schistodesmus_xinyuensis ** 
           +--+                            
              +-- Schistodesmus_spinosus **   

Dai et al., 2025 [Publ 4440], fig. 1

iTtTbiriSoTroTroSiD
3303421063
  +----- Diaurora                  
  |                                
--+  +-- Schistodesmus_xinyuensis **  
  |  |                             
  +--+-- Schistodesmus_spinosus **    
     |                             
     +-- Schistodesmus_tongpenensis **

Chen et al., 2023 [Publ 4302], fig. 1

iTtTbiriSoTroTroSiD
3313381162
  +-------- Diaurora                  
--+                                   
  |  +----- Schistodesmus_spinosus **    
  +--+                                
     |  +-- Schistodesmus_xinyuensis **  
     +--+                             
        +-- Schistodesmus_tongpenensis **

Campbell & Lydeard, 2026 [Publ 4810], fig. 4

iTtTbiriSoTroTroSiD
331344642
  +----------------- Pseudocuneopsis          
--+                                           
  |  +-------------- Nodularia                
  +--+                                        
     |  +----------- Tchangsinaia             
     +--+                                     
        |  +-------- Cuneopsis                
        +--+                                  
           |  +----- Schistodesmus_spinosus **   
           +--+                               
              |  +-- Schistodesmus_lampreyanus **
              +--+                            
                 +-- Schistodesmus_xinyuensis ** 

Wu et al., 2024 [Publ 4350], fig. 8a_S1

iTtTbiriSoTroTroSiD
331389942
  +----------- Nodularia                
  |                                     
  +----------- Pseudocuneopsis          
--+                                     
  |        +-- Tchangsinaia             
  |  +-----+                            
  |  |     +-- Cuneopsis                
  +--+                                  
     |  +----- Schistodesmus_spinosus **   
     +--+                               
        |  +-- Schistodesmus_lampreyanus **
        +--+                            
           +-- Schistodesmus_xinyuensis ** 

Dai et al., 2025 [Publ 4440], fig. 2

iTtTbiriSoTroTroSiD
3313421062
  +-------- Diaurora                  
--+                                   
  |  +----- Schistodesmus_spinosus **    
  +--+                                
     |  +-- Schistodesmus_xinyuensis **  
     +--+                             
        +-- Schistodesmus_tongpenensis **

Dai et al., 2025 [Publ 4440], fig. 3

iTtTbiriSoTroTroSiD
3313851342
           +-- Nodularia                 
  +--------+                             
  |        +-- Pseudocuneopsis           
  |                                      
--+        +-- Tchangsinaia              
  |  +-----+                             
  |  |     +-- Cuneopsis                 
  +--+                                   
     |  +----- Schistodesmus_spinosus **    
     +--+                                
        |  +-- Schistodesmus_xinyuensis **  
        +--+                             
           +-- Schistodesmus_tongpenensis **

Dai et al., 2024 [Publ 4358], fig. 4

iTtTbiriSoTroTroSiD
3313501142
  +-------------- Pseudocuneopsis          
  |                                        
--+  +----------- Nodularia                
  |  |                                     
  +--+        +-- Tchangsinaia             
     |  +-----+                            
     |  |     +-- Cuneopsis                
     +--+                                  
        |  +----- Schistodesmus_spinosus **   
        +--+                               
           |  +-- Schistodesmus_lampreyanus **
           +--+                            
              +-- Schistodesmus_xinyuensis ** 

Wu et al., 2022 [Publ 4238], fig. 2d

iTtTbiriSoTroTroSiD
3313361252
  +-------------- Pseudocuneopsis          
  |                                        
--+  +----------- Nodularia                
  |  |                                     
  |  |     +----- Schistodesmus_spinosus **   
  +--+  +--+                               
     |  |  |  +-- Schistodesmus_lampreyanus **
     |  |  +--+                            
     +--+     +-- Schistodesmus_xinyuensis ** 
        |                                  
        |  +----- Cuneopsis                
        +--+                               
           |  +-- Tchangsinaia             
           +--+                            
              +-- Inversiunio              

Wu et al., 2018 [Publ 3836], fig. 2

iTtTbiriSoTroTroSiD
22025153--
        +-- Tchangsinaia            
  +-----+                           
  |     +-- Cuneopsis               
--+                                 
  |  +----- Nodularia               
  +--+                              
     |  +-- Schistodesmus_xinyuensis **
     +--+                           
        +-- Schistodesmus_spinosus **  

Zhang et al., 2004 [Publ 2735], fig. 1

iTtTbiriSoTroTroSiD
22021254--
  +----------------- Tchangsinaia            
--+                                          
  |  +-------------- Cuneopsis_heudei        
  +--+                                       
     |  +----------- Nodularia               
     +--+                                    
        |  +-------- Pseudocuneopsis         
        +--+                                 
           |  +----- Cuneopsis_rufescens     
           +--+                              
              |  +-- Schistodesmus_xinyuensis **
              +--+                           
                 +-- Schistodesmus_spinosus **  

Wu et al., 2021 [Publ 4366], fig. 3-BI

iTtTbiriSoTroTroSiD
22027254--
  +----------- Pseudocuneopsis          
  |                                     
--+  +-------- Nodularia                
  |  |                                  
  +--+     +-- Schistodesmus_xinyuensis ** 
     |  +--+                            
     |  |  +-- Schistodesmus_lampreyanus **
     +--+                               
        |  +-- Cuneopsis                
        +--+                            
           +-- Tchangsinaia             

Hou et al., 2025 [Publ 4401], fig. 4

iTtTbiriSoTroTroSiD
220226234--
  +----------- Pseudocuneopsis         
  |                                    
--+  +-------- Nodularia               
  |  |                                 
  +--+     +-- Schistodesmus_xinyuensis **
     |  +--+                           
     |  |  +-- Schistodesmus_spinosus **  
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis               

Pavan-Kumar et al., 2022 [Publ 4263], fig. S5

iTtTbiriSoTroTroSiD
22023722--
     +-- Nodularia                
  +--+                            
  |  +-- Tchangsinaia             
--+                               
  |  +-- Schistodesmus_lampreyanus **
  +--+                            
     +-- Schistodesmus_xinyuensis ** 

Liu et al., 2023 [Publ 4310], fig. 5

iTtTbiriSoTroTroSiD
22022295--
  +-------- Cuneopsis               
  |                                 
  |  +----- Nodularia               
  +--+                              
  |  |  +-- Schistodesmus_xinyuensis **
--+  +--+                           
  |     +-- Schistodesmus_spinosus **  
  |                                 
  |     +-- Tchangsinaia            
  |     |                           
  +-----+-- Inversiunio             
        |                           
        +-- Pseudocuneopsis         

Wu et al., 2020 [Publ 4147], fig. 3

iTtTbiriSoTroTroSiD
22022844--
  +----------- Pseudocuneopsis          
  |                                     
--+  +-------- Nodularia                
  |  |                                  
  +--+     +-- Schistodesmus_lampreyanus **
     |  +--+                            
     |  |  +-- Schistodesmus_xinyuensis ** 
     +--+                               
        |  +-- Cuneopsis                
        +--+                            
           +-- Tchangsinaia             

Fukata & Iigo, 2020 [Publ 4106], fig. 1

iTtTbiriSoTroTroSiD
22025244--
     +----- Pseudocuneopsis          
  +--+                               
  |  |  +-- Nodularia                
  |  +--+                            
--+     +-- Tchangsinaia             
  |                                  
  |  +----- Cuneopsis                
  +--+                               
     |  +-- Schistodesmus_lampreyanus **
     +--+                            
        +-- Schistodesmus_xinyuensis ** 

Wu et al., 2021 [Publ 4366], fig. 6

iTtTbiriSoTroTroSiD
22028943--
  +----------- Nodularia               
--+                                    
  |  +-------- Cuneopsis               
  +--+                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Schistodesmus_spinosus **  
        +--+                           
           +-- Schistodesmus_xinyuensis **

Pavan-Kumar et al., 2022 [Publ 4263], fig. 4

iTtTbiriSoTroTroSiD
22023522--
     +-- Nodularia                
  +--+                            
  |  +-- Tchangsinaia             
--+                               
  |  +-- Schistodesmus_lampreyanus **
  +--+                            
     +-- Schistodesmus_xinyuensis ** 

Kim et al., 2021 [Publ 4197], fig. 1

iTtTbiriSoTroTroSiD
22021652--
  +-------- Nodularia                
--+                                  
  |  +----- Cuneopsis                
  +--+                               
     |  +-- Schistodesmus_xinyuensis ** 
     +--+                            
        +-- Schistodesmus_lampreyanus **

Wu et al., 2021 [Publ 4366], fig. 3-ML

iTtTbiriSoTroTroSiD
22027254--
  +-------------- Pseudocuneopsis          
--+                                        
  |  +----------- Nodularia                
  +--+                                     
     |  +-------- Tchangsinaia             
     +--+                                  
        |  +----- Cuneopsis                
        +--+                               
           |  +-- Schistodesmus_xinyuensis ** 
           +--+                            
              +-- Schistodesmus_lampreyanus **

Fukata & Iigo, 2019 [Publ 4108], fig. 1

iTtTbiriSoTroTroSiD
22021564--
  +----------- Pseudocuneopsis          
  |                                     
--+        +-- Tchangsinaia             
  |  +-----+                            
  |  |     +-- Nodularia                
  +--+                                  
     |  +----- Cuneopsis                
     +--+                               
        |  +-- Schistodesmus_lampreyanus **
        +--+                            
           +-- Schistodesmus_xinyuensis ** 

Liu et al., 2023 [Publ 4310], fig. 4

iTtTbiriSoTroTroSiD
22022295--
  +----------- Cuneopsis               
  |                                    
  |     +----- Nodularia               
--+  +--+                              
  |  |  |  +-- Schistodesmus_xinyuensis **
  |  |  +--+                           
  +--+     +-- Schistodesmus_spinosus **  
     |                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Inversiunio             
        +--+                           
           +-- Pseudocuneopsis         

Hou et al., 2024 [Publ 4400], fig. 4

iTtTbiriSoTroTroSiD
220274224--
  +----------- Pseudocuneopsis         
  |                                    
--+  +-------- Nodularia               
  |  |                                 
  +--+     +-- Schistodesmus_xinyuensis **
     |  +--+                           
     |  |  +-- Schistodesmus_spinosus **  
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis               

Dai et al., 2024 [Publ 4386], fig. 6

iTtTbiriSoTroTroSiD
22024094--
  +----------- Pseudocuneopsis          
  |                                     
--+  +-------- Nodularia                
  |  |                                  
  +--+     +-- Schistodesmus_lampreyanus **
     |  +--+                            
     |  |  +-- Schistodesmus_xinyuensis ** 
     +--+                               
        |  +-- Tchangsinaia             
        +--+                            
           +-- Cuneopsis                

Wu et al., 2021 [Publ 4366], fig. 4

iTtTbiriSoTroTroSiD
22026754--
  +----------- Pseudocuneopsis          
  |                                     
--+  +-------- Nodularia                
  |  |                                  
  +--+     +-- Schistodesmus_xinyuensis ** 
     |  +--+                            
     |  |  +-- Schistodesmus_lampreyanus **
     +--+                               
        |  +-- Tchangsinaia             
        +--+                            
           +-- Cuneopsis                

Hou et al., 2025 [Publ 4432], fig. 4

iTtTbiriSoTroTroSiD
220226234--
  +----------- Pseudocuneopsis         
  |                                    
--+  +-------- Nodularia               
  |  |                                 
  +--+     +-- Schistodesmus_xinyuensis **
     |  +--+                           
     |  |  +-- Schistodesmus_spinosus **  
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis               

Wu et al., 2024 [Publ 4379], fig. 5

iTtTbiriSoTroTroSiD
220252174--
  +----------- Pseudocuneopsis         
  |                                    
--+  +-------- Nodularia               
  |  |                                 
  +--+     +-- Schistodesmus_spinosus **  
     |  +--+                           
     |  |  +-- Schistodesmus_xinyuensis **
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis               

Zhou et al., 2007 [Publ 2658], fig. 1

iTtTbiriSoTroTroSiD
22021922--
  +-- Schistodesmus_xinyuensis **
--+                           
  +-- Schistodesmus_spinosus **  

Wu et al., 2024 [Publ 4379], fig. 4_6

iTtTbiriSoTroTroSiD
220221101--
  +----- Nodularia               
--+                              
  |  +-- Schistodesmus_xinyuensis **
  +--+                           
     +-- Schistodesmus_spinosus **  

Chen et al., 2025 [Publ 4448], fig. 3

iTtTbiriSoTroTroSiD
220284175--
  +-------------- Pseudocuneopsis          
  |                                        
--+  +----------- Nodularia                
  |  |                                     
  +--+        +-- Tchangsinaia             
     |  +-----+                            
     |  |     +-- Cuneopsis                
     +--+                                  
        |  +----- Tongchuania              
        +--+                               
           |  +-- Schistodesmus_xinyuensis ** 
           +--+                            
              +-- Schistodesmus_lampreyanus **

Wu et al., 2021 [Publ 4366], fig. 2_I

iTtTbiriSoTroTroSiD
22028943--
  +----------- Nodularia               
--+                                    
  |  +-------- Cuneopsis               
  +--+                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Schistodesmus_xinyuensis **
        +--+                           
           +-- Schistodesmus_spinosus **  

Wu et al., 2023 [Publ 4296], fig. 4

iTtTbiriSoTroTroSiD
22022185--
  +----------- Cuneopsis               
  |                                    
  |     +----- Nodularia               
--+  +--+                              
  |  |  |  +-- Schistodesmus_xinyuensis **
  |  |  +--+                           
  +--+     +-- Schistodesmus_spinosus **  
     |                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Inversiunio             
        +--+                           
           +-- Pseudocuneopsis         

Dai et al., 2024 [Publ 4386], fig. 5-BI

iTtTbiriSoTroTroSiD
11012183--
  +----- Cuneopsis               
  |                              
--+----- Nodularia               
  |                              
  |  +-- Inversiunio             
  +--+                           
     +-- Schistodesmus_xinyuensis **

Wu et al., 2020 [Publ 4121], fig. 3

iTtTbiriSoTroTroSiD
11014844--
  +----------- Pseudocuneopsis         
--+                                    
  |  +-------- Nodularia               
  +--+                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Cuneopsis               
        +--+                           
           +-- Schistodesmus_xinyuensis **

Jeratthitikul et al., 2022 [Publ 4260], fig. S2_2

iTtTbiriSoTroTroSiD
11017553--
  +----------- Nodularia               
--+                                    
  |  +-------- Schistodesmus_xinyuensis **
  +--+                                 
     |  +----- Cuneopsis_szechenyii    
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis_rufescens     

Froufe et al., 2019 [Publ 3936], fig. 3

iTtTbiriSoTroTroSiD
11014322--
  +----- Nodularia                
--+                               
  |  +-- Tchangsinaia             
  +--+                            
     +-- Schistodesmus_lampreyanus **

Sano et al., 2020 [Publ 4138], fig. 3

iTtTbiriSoTroTroSiD
11016763--
  +-------- Inversiunio              
--+                                  
  |  +----- Nodularia                
  +--+                               
     |  +-- Schistodesmus_lampreyanus **
     +--+                            
        +-- Tchangsinaia             

Xue et al., 2016 [Publ 3659], fig. 1

iTtTbiriSoTroTroSiD
11011411--
-- Schistodesmus_lampreyanus **

Guerra et al., 2019 [Publ 4168], fig. 1-M

iTtTbiriSoTroTroSiD
11012100--
-- Schistodesmus_lampreyanus **

Soroka & Burzynski, 2017 [Publ 3837], fig. 1

iTtTbiriSoTroTroSiD
11012222--
  +----- Schistodesmus_lampreyanus **
--+                               
  |  +-- Tchangsinaia             
  +--+                            
     +-- Nodularia                

Huang et al., 2002 [Publ 2657], fig. 1

iTtTbiriSoTroTroSiD
11013322--
-- Schistodesmus_xinyuensis **

Wu et al., 2019 [Publ 3864], fig. 3

iTtTbiriSoTroTroSiD
11014544--
  +----------- Pseudocuneopsis         
--+                                    
  |  +-------- Nodularia               
  +--+                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Cuneopsis               
        +--+                           
           +-- Schistodesmus_xinyuensis **

Bolotov et al., 2017 [Publ 3761], fig. S2

iTtTbiriSoTroTroSiD
110113753--
-- Schistodesmus_xinyuensis **

Sano et al., 2020 [Publ 4138], fig. 2

iTtTbiriSoTroTroSiD
11016763--
  +-------- Inversiunio              
--+                                  
  |  +----- Nodularia                
  +--+                               
     |  +-- Tchangsinaia             
     +--+                            
        +-- Schistodesmus_lampreyanus **

Bolotov et al., 2017 [Publ 3764], fig. S1

iTtTbiriSoTroTroSiD
110112353--
-- Schistodesmus_xinyuensis **

Froufe et al., 2019 [Publ 3936], fig. 6

iTtTbiriSoTroTroSiD
11014322--
  +----- Nodularia                
--+                               
  |  +-- Tchangsinaia             
  +--+                            
     +-- Schistodesmus_lampreyanus **

Zhou et al., 2016 [Publ 3710], fig. 1

iTtTbiriSoTroTroSiD
11011900--
-- Schistodesmus_lampreyanus **

Huang et al., 2019 [Publ 3843], fig. 3

iTtTbiriSoTroTroSiD
11015522--
  +----- Nodularia                
--+                               
  |  +-- Tchangsinaia             
  +--+                            
     +-- Schistodesmus_lampreyanus **

Liu et al., 2017 [Publ 3939], fig. 2

iTtTbiriSoTroTroSiD
11011462--
  +-- Schistodesmus_xinyuensis **
  |                           
--+-- Cuneopsis               
  |                           
  +-- Nodularia               

Dai et al., 2024 [Publ 4358], fig. 3

iTtTbiriSoTroTroSiD
1101552--
  +----- Pseudocuneopsis         
--+                              
  |  +-- Schistodesmus_xinyuensis **
  +--+                           
     +-- Nodularia               

Guerra et al., 2019 [Publ 4168], fig. 2

iTtTbiriSoTroTroSiD
11014000--
-- Schistodesmus_lampreyanus **

Wu et al., 2022 [Publ 4238], fig. 2a_S1

iTtTbiriSoTroTroSiD
110111105--
  +-------------- Nodularia      
--+                              
  |  +----------- Pseudocuneopsis
  +--+                           
     |  +-------- Schistodesmus **  
     +--+                        
        |  +----- Cuneopsis      
        +--+                     
           |  +-- Tchangsinaia   
           +--+                  
              +-- Inversiunio    

Cha et al., 2018 [Publ 3916], fig. 1

iTtTbiriSoTroTroSiD
11013722--
  +----- Schistodesmus_lampreyanus **
--+                               
  |  +-- Nodularia                
  +--+                            
     +-- Tchangsinaia             

Aunins et al., 2018 [Publ 3863], fig. 1

iTtTbiriSoTroTroSiD
11013933--
  +-------- Nodularia                
--+                                  
  |  +----- Tchangsinaia             
  +--+                               
     |  +-- Cuneopsis                
     +--+                            
        +-- Schistodesmus_lampreyanus **

Araujo et al., 2017 [Publ 3801], fig. 2

iTtTbiriSoTroTroSiD
11011300--
-- Schistodesmus_lampreyanus **

Dai et al., 2024 [Publ 4386], fig. 5-ML

iTtTbiriSoTroTroSiD
11012183--
  +-------- Nodularia               
--+                                 
  |  +----- Cuneopsis               
  +--+                              
     |  +-- Inversiunio             
     +--+                           
        +-- Schistodesmus_xinyuensis **

Choi et al., 2020 [Publ 4169], fig. 2a

iTtTbiriSoTroTroSiD
110111103--
-- Schistodesmus_xinyuensis **

Guerra et al., 2019 [Publ 4168], fig. 2-M

iTtTbiriSoTroTroSiD
11012100--
-- Schistodesmus_lampreyanus **

Lopes-Lima et al., 2017 [Publ 3792], fig. 2

iTtTbiriSoTroTroSiD
11013122--
  +----- Schistodesmus_lampreyanus **
--+                               
  |  +-- Tchangsinaia             
  +--+                            
     +-- Nodularia                

Jeratthitikul et al., 2022 [Publ 4260], fig. S1_1

iTtTbiriSoTroTroSiD
11017553--
  +----------- Nodularia               
--+                                    
  |  +-------- Schistodesmus_xinyuensis **
  +--+                                 
     |  +----- Cuneopsis_szechenyii    
     +--+                              
        |  +-- Tchangsinaia            
        +--+                           
           +-- Cuneopsis_rufescens     

Chen et al., 2020 [Publ 4170], fig. 1

iTtTbiriSoTroTroSiD
11013300--
-- Schistodesmus_lampreyanus **

Sano et al., 2020 [Publ 4138], fig. 4

iTtTbiriSoTroTroSiD
11016763--
  +-------- Nodularia                
--+                                  
  |  +----- Inversiunio              
  +--+                               
     |  +-- Schistodesmus_lampreyanus **
     +--+                            
        +-- Tchangsinaia             

Dai et al., 2023 [Publ 4285], fig. 5

iTtTbiriSoTroTroSiD
11015244--
        +-- Pseudocuneopsis         
  +-----+                           
  |     +-- Nodularia               
--+                                 
  |  +----- Schistodesmus_xinyuensis **
  +--+                              
     |  +-- Cuneopsis               
     +--+                           
        +-- Tchangsinaia            

Ouyang et al., 2015 [Publ 4493], fig. 1

iTtTbiriSoTroTroSiD
11013063--
-- Schistodesmus_xinyuensis **

Huang et al., 2002 [Publ 2657], fig. 2

iTtTbiriSoTroTroSiD
11013322--
-- Schistodesmus_xinyuensis **

Wu et al., 2024 [Publ 4388], fig. 6

iTtTbiriSoTroTroSiD
11015264--
  +----------- Pseudocuneopsis         
--+                                    
  |  +-------- Nodularia               
  +--+                                 
     |  +----- Tchangsinaia            
     +--+                              
        |  +-- Cuneopsis               
        +--+                           
           +-- Schistodesmus_xinyuensis **

Lopes-Lima et al., 2017 [Publ 3745], fig. 1-2

iTtTbiriSoTroTroSiD
11017953--
  +-------- Nodularia               
--+                                 
  |  +----- Schistodesmus_xinyuensis **
  +--+                              
     |  +-- Tchangsinaia            
     +--+                           
        +-- Cuneopsis               

Sano et al., 2020 [Publ 4138], fig. 1

iTtTbiriSoTroTroSiD
11013353--
  +-- Schistodesmus_xinyuensis **
--+                           
  +-- Inversiunio             

Bogan et al., 2023 [Publ 4295], fig. 3

iTtTbiriSoTroTroSiD
11013000--
-- Schistodesmus_xinyuensis **

Sano et al., 2017 [Publ 3799], fig. 2

iTtTbiriSoTroTroSiD
11013273--
-- Schistodesmus_xinyuensis **

Guerra et al., 2019 [Publ 4168], fig. 1

iTtTbiriSoTroTroSiD
11014000--
-- Schistodesmus_lampreyanus **

Bolotov et al., 2017 [Publ 3761], fig. S1

iTtTbiriSoTroTroSiD
110113753--
  +-------- Nodularia               
--+                                 
  |  +----- Cuneopsis               
  +--+                              
     |  +-- Tchangsinaia            
     +--+                           
        +-- Schistodesmus_xinyuensis **

Ouyang et al., 2015 [Publ 4493], fig. 2

iTtTbiriSoTroTroSiD
11013063--
  +----------------- Nodularia               
  |                                          
  |           +----- Cuneopsis_rufescens__2  
--+  +--------+                              
  |  |        |  +-- Schistodesmus_xinyuensis **
  |  |        +--+                           
  +--+           +-- Cuneopsis_celtiformis__2
     |                                       
     |  +----------- Tchangsinaia            
     +--+                                    
        |  +-------- Cuneopsis_celtiformis__1
        +--+                                 
           |  +----- Cuneopsis_szechenyii__2 
           +--+                              
              |  +-- Cuneopsis_szechenyii__1 
              +--+                           
                 +-- Cuneopsis_rufescens__1  

Huang et al., 2019 [Publ 3843], fig. 3-M

iTtTbiriSoTroTroSiD
11012200--
-- Schistodesmus_lampreyanus **

Zieritz et al., 2021 [Publ 4231], fig. 3-F_5

iTtTbiriSoTroTroSiD
11014722--
  +----- Nodularia                
--+                               
  |  +-- Schistodesmus_lampreyanus **
  +--+                            
     +-- Tchangsinaia             

Fonseca et al., 2016 [Publ 3775], fig. 1

iTtTbiriSoTroTroSiD
11013022--
  +----- Schistodesmus_lampreyanus **
--+                               
  |  +-- Nodularia                
  +--+                            
     +-- Tchangsinaia             
 
NSF icon MUSSEL icon
"Making the world a better place, one mollusk at a time."