MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Thu 22 January 2026
Publication Morrison (1969): summary
Full Citation
Morrison, J.P.E. 1969. The earliest names for North American naiads. American Malacological Union, Inc. Annual Reports (1969): 22-24. Available electronically.
Attributed Nominal Species
Plethobasus pachosteus ‘Rafinesque’ of Authors = Plethobasus cicatricosus
‘Rafinesque’ of Authors.
Morrison, 1969. AMU Annual Rept. (1969): 24.
R.I. Johnson, 1980. Bull. MCZ 149(2): 90.
(misidentified reference to Obovaria pachostea Rafinesque, 1820)
Taxonomic Opinions
Alasmidonta atropurpureum Rafinesque, 1831 = Alasmidonta atropurpurea + Alasmidonta raveneliana
+ Margaritana raveneliana Lea, 1834
Alasmidonta viridis Rafinesque, 1820 = Sulcularia viridis
+ Unio calceolus Lea, 1828
Crenodonta lineolata Rafinesque, 1820 = Ellipsaria lineolata
+ Unio securis Lea, 1829
Cyprogenia stegaria Rafinesque, 1820
+ Unio irroratus Lea, 1828
Ellipsaria ligamentina Lamarck, 1819 = Ortmanniana ligamentina
+ Unio carinatus Barnes, 1823
There are 61 species taxonomic opinions attributed to this publication.
Fusconaia lateralis Rafinesque, 1820 = Fusconaia flava
+ Unio undatus Barnes, 1823
Fusconaia polita (Say, 1834) = Fusconaia subrotunda
+ Unio subrotundus Lea, 1831
Fusconaia pusilla Rafinesque, 1820 = Reginaia ebenus
+ Unio ebenus Lea, 1831
Lampsilis abruptus Say, 1831 = Lampsilis abrupta + Obovaria subrotunda
+ Margarita (Unio) orbiculatus Lea, 1836
Lampsilis cardium Rafinesque, 1820
+ Unio ventricosus Barnes, 1823
Lampsilis luteola Lamarck, 1819 = Lampsilis radiata + Lampsilis siliquoidea
+ Unio siliquoideus Barnes, 1823
Lampsilis teres Rafinesque, 1820
+ Lampsilis fallaciosus Smith, 1899
Lasmigona badia Rafinesque, 1831 = Sulcularia viridis + Alasminota holstonia
+ Margaritana holstonia Lea, 1838
Lemiox rimosus Rafinesque, 1831
+ Unio caelatus Conrad, 1834
Megalonaias nervosa Rafinesque, 1820
+ Unio crassus var. giganteus Barnes, 1823
Plagiola interruptus Rafinesque, 1820 = Ptychobranchus fasciolaris + Epioblasma brevidens
+ Unio brevidens Lea, 1831
Plagiola perobliqua Conrad, 1837 = Epioblasma perobliqua + Epioblasma rangiana
+ Truncilla (Scalenaria) sulcata var. delicata Simpson, 1900
Plagiola ridibundus Say, 1831 = Epioblasma obliquata
+ Unio sulcatus Lea, 1829
Plagiola (Epioblasma) flexuosa Rafinesque, 1820 = Epioblasma flexuosa
+ Unio foliatus Hildreth, 1828
Plethobasus pachosteus Rafinesque, 1820 = Reginaia ebenus + Plethobasus cicatricosus
+ Unio cicatricosus Say, 1829
Plethobasus striatus Rafinesque, 1820 = Obovaria subrotunda + Plethobasus cooperianus
+ Unio cooperianus Lea, 1834
Pleurobema obliquata Rafinesque, 1820 = Epioblasma obliquata + Pleurobema sintoxia
+ Unio pyramidatus Lea, 1831
Pleurobema obliquum Lamarck, 1819 = Pleurobema cordatum
+ Obovaria cordata Rafinesque, 1820
Pleurobema premorsa Rafinesque, 1831 = Pustulosa pustulosa + Pleurobema plenum
+ Unio plenus Lea, 1840
Pleurobema sintoxia Rafinesque, 1820
+ Unio solidus Lea, 1838
Potamilus alatus Say, 1817
Potamilus ohiensis Rafinesque, 1820
+ Symphynota laevissima Lea, 1829
Quadrula bullata Rafinesque, 1820 = Pustulosa pustulosa
+ Unio pustulosus Lea, 1831
Toxolasma livida Rafinesque, 1831 = Toxolasma lividum
+ Unio glans Lea, 1831
Truncilla vermiculata Rafinesque, 1820 = Truncilla truncata
+ Truncilla truncata Rafinesque, 1820
Villosa teneltus Rafinesque, 1831 = Cambarunio taeniatus
+ Unio taeniatus Conrad, 1834
