Bivalvia | Unionida | Unionoidea | Unionidae | Gonideinae | Lamproscaphini | Contradentina

genus Trapezoideus Simpson, 1900: cladomics

5 Recent valid species (5 total species)

Cladomics pages are experimental — even more so than the rest of this site!

The purpose of the cladomics pages for each genus and family-group level taxon is to provide statistics and references indicating the extent to which published phylogenetic work supports the classification used here.

The Cladomics Summary provides an overview of the number of studies that have included terminal species representing this taxon as well as an indication of how frequently it has been recovered as monophyletic.

Following the summary, the available published clades representing the taxon are listed.

For more information, visit the Cladomics FARQ (frequently asked rhetorical questions) page. Abbreviations for the various statistics are explained on the FARQ!

Cladomics Summary

number of species = 5 (5 total)
analyzed in 28 cladograms in 19 publications
maximum number of terminals in an analysis = 5 (mean = 1.61, median = 1)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 8
maximum number of included terminals = 5, (mean = 3.13 median = 3)
proportion of cladograms that support basic monophyly = 1

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.

Cladograms

Konopleva et al., 2023 [Publ 4262], fig. 8

** Top Monophyly Cladogram **

Pfeiffer et al., 2021 [Publ 4126], fig. 9

** Top Sister-Group Cladogram **

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

Pfeiffer et al., 2021 [Publ 4126], fig. 18

Bolotov et al., 2022 [Publ 4250], fig. S5

Bolotov et al., 2022 [Publ 4250], fig. 8

Bolotov et al., 2020 [Publ 4100], fig. 1

Bolotov et al., 2020 [Publ 4100], fig. S1

Pfeiffer et al., 2019 [Publ 3937], fig. 4-5

Pfeiffer et al., 2019 [Publ 3937], fig. 6

Konopleva et al., 2019 [Publ 3900], fig. 1

Konopleva et al., 2019 [Publ 4041], fig. 3

Zieritz et al., 2020 [Publ 4102], fig. 4

Jeratthitikul et al., 2021 [Publ 4212], fig. 4

Zieritz et al., 2021 [Publ 4218], fig. 5

Wu et al., 2024 [Publ 4350], fig. 5a

Wu et al., 2024 [Publ 4350], fig. 5b

Wu et al., 2024 [Publ 4350], fig. 5c

Wu et al., 2024 [Publ 4350], fig. 6-7

Liu et al., 2024 [Publ 4380], fig. 5

Zieritz et al., 2024 [Publ 4381], fig. 2

Wu et al., 2024 [Publ 4388], fig. 5

Pfeiffer et al., 2018 [Publ 3827], fig. 1

Jeratthitikul et al., 2021 [Publ 4219], fig. 1

Jeratthitikul et al., 2021 [Publ 4219], fig. 2

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

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

Jeratthitikul et al., 2024 [Publ 4387], fig. 1