MUSSELpdb
Taxonomy
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freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
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freshwater mussels
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Data last updated
Thu 19 March 2026
Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini
genus Ellipsaria Rafinesque, 1820: cladomics
1 Recent valid species (1 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 = 1 (1 total)
analyzed in 25 cladograms in 16 publications
maximum number of terminals in an analysis = 1 (mean = 1, median = 1)
Cladograms
Campbell & Lydeard, 2026 [Publ 4810], fig. 6-14
** Top Monophyly Cladogram ** ** Top Sister-Group Cladogram **
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 630 | 92 | 26 | -- |
+-------- Potamilus_inflatus
+--------+
| | +----- Potamilus_ohiensis
| +--+
| | +-- Potamilus_amphichaenus
| +--+
+-----------------------------------+ +-- Potamilus_streckersoni
| |
| | +----- Potamilus_fragilis__2
| | +--------+
| | | | +-- Potamilus_leptodon
| | | +--+
| +--+ +-- Potamilus_fragilis__1
| |
| | +----------- Potamilus_metnecktayi
| | |
| +--+ +-------- Potamilus_alatus__3
| | |
| +--+ +----- Potamilus_alatus__2
--+ | |
| +--+----- Potamilus_purpuratus__2
| |
| | +-- Potamilus_alatus__1
| +--+
| +-- Potamilus_purpuratus__1
|
| +-- Villosa_villosa
| +-----------------------------------------------+
| | +-- Atlanticoncha
| |
| | +-- Cambarunio_nebulosus
| | +--------------------------------------------+
+--+ | +-- Ligumia
| |
| | +-------- Leaunio_umbrans
| | +-----------------------------------+
| | | | +----- Cambarunio_taeniatus
+--+ | +--+
| | | +-- Cambarunio_iris
| | +--+
| | +-- Cambarunio_simus
| |
| | +----------------------------------------- Hamiota
| | |
+--+ | +----------------------- Pachynaias
| | |
| | +--------------+ +-------------------- Sagittunio
| | | | |
| | | | | +----- Ellipsaria_lineolata **
| | | +--+ +-----------+
| | | | | | +-- Potamilus_capax
| | | | | +--+
| | | | | +-- Truncilla
+--+ | +--+
| | | +----- Medionidus_acutissimus
| | | +--------+
| | | | | +-- Lemiox
| | | | +--+
| | +--+ +-- Medionidus_penicillatus
| | |
| | | +----------- Ptychobranchus
| | | |
| | +--+ +-- Cyprogenia_aberti__2
| | | +-----+
+--+ | | +-- Dromus
| +--+
| | +----- Cyprogenia_stegaria__2
| +--+
| | +-- Cyprogenia_aberti__1
| +--+
| +-- Cyprogenia_stegaria__1
|
| +-- Villosa_delumbis
| +--------------------------------+
| | +-- Villosa_vibex
| |
| | +-------------- Obovaria_olivaria
| | |
| | +-----------------+ +-- Venustaconcha
| | | | +--------+
| | | | | +-- Epioblasma
| | | +--+
| | | | +-------- Obovaria_retusa
+--+ | +--+
| | | +----- Obovaria_choctawensis
| | +--+
| | | +-- Obovaria_unicolor
| | +--+
| | +-- Obovaria_subrotunda
| |
| | +-- Mesonaias
| | +-----------------------+
| | | +-- Obovaria_arkansasensis
| | |
+--+ +--+ +-- Lampsilis_splendida
| | | +--------------------+
| | | | +-- Lampsilis_bracteata
| | | |
| | +--+ +-- Lampsilis_fasciola
| | | +-----------------+
| | | | +-- Ortmanniana_pectorosa
| | +--+
| | | +----------------- Lampsilis_ornata
| | | |
| | +--+ +-------------- Lampsilis_ovata__2
| | | |
| | +--+ +----------- Lampsilis_dolabraeformis
| | | |
| | | | +----- Lampsilis_cardium__2
| | +--+ +--+
| | | | | +-- Lampsilis_cardium__1
+--+ | | +--+
| +--+ +-- Lampsilis_satura
| |
| | +----- Lampsilis_cariosa__2
| +--+
| | +-- Lampsilis_ovata__1
| +--+
| +-- Lampsilis_cariosa__1
|
| +----------- Ortmanniana_ligamentina__2
| +--------------+
| | | +-------- Lampsilis_abrupta
| | +--+
| | | +----- Lampsilis_higginsii__2
| | +--+
| | | +-- Ortmanniana_ligamentina__1
| | +--+
+--+ +-- Lampsilis_higginsii__1
|
| +----- Medionidus_conradicus
| +-----------------+
| | | +-- Leaunio_lienosus
| | +--+
| | +-- Leaunio_vanuxemensis
| |
+--+ +-- Lampsilis_floridensis
| +-----------------+
| | +-- Lampsilis_teres
| |
| | +-- Lampsilis_siliquoidea__1
+--+ |
| +-- Lampsilis_siliquoidea__2
| +--------------+
| | +-- Lampsilis_powellii__1
| | |
+--+ +-- Lampsilis_powellii__2
|
| +-------------- Lampsilis_sietmani
| |
+--+ +-- Lampsilis_straminea__2
| +--------+
| | +-- Lampsilis_virescens
+--+
| +-------- Lampsilis_hydiana__2
+--+
| +----- Lampsilis_hydiana__1
+--+
| +-- Lampsilis_bergmanni
+--+
+-- Lampsilis_straminea__1
Zanatta & Murphy, 2006 [Publ 2672], fig. 2
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 56 | 47 | 22 | -- |
+-- Paetulunio
+-----------------------------------+
| +-- Toxolasma
|
| +----- Obliquaria
| +-----------------------------+
--+ | | +-- Glebula
| | +--+
| | +-- Cyrtonaias
| |
| | +----- Ptychobranchus
| | +--+
+--+ | | +-- Dromus
| | +--+
| +-----------------------+ +-- Cyprogenia
| | |
| | | +----- Medionidus_conradicus
| | +--+
| | | +-- Medionidus_acutissimus
| | +--+
+--+ +-- Lemiox
|
| +----------------------------- Sagittunio
| |
| +----------------------------- Potamilus
| |
| | +-- Truncilla
+--+ +-----------------------+
| | +-- Ellipsaria_lineolata **
| |
| | +-- Ortmanniana_pectorosa
| | +-----+
| | | +-- Lampsilis_fasciola
+--+ +--------------+
| | | +----- Lampsilis_ornata
| | +--+
| | | +-- Lampsilis_ovata
| | +--+
| | +-- Lampsilis_cardium
+--+
| +-- Ligumia
| +--+
| | +-- Cambarunio
| +--------------+
| | | +-- Lampsilis_teres
| | +--+
+--+ +-- Hamiota
|
| +----------------- Leaunio
| |
+--+ +-------------- Ortmanniana_ligamentina
| |
+--+ +----------- Lampsilis_siliquoidea
| |
+--+ +-------- Obovaria_olivaria
| |
| +-------- Venustaconcha
+--+
+-------- Epioblasma
|
| +----- Obovaria_unicolor
+--+
| +-- Obovaria_subrotunda
+--+
+-- Obovaria_arkansasensis
Inoue et al., 2020 [Publ 3941], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 40 | 25 | 6 | -- |
+----------------------------------- Toxolasma | --+ +-------------------------------- Ellipsaria_lineolata ** | | +--+ +----------------------------- Truncilla | | | | +-------------------------- Potamilus +--+ | | | +----------------------- Leaunio | | | +--+ | +----------------- Lampsilis_bracteata | | | | | +--+ +-- Lampsilis_ornata | | | | +-----------+ +--+ | | | +-- Lampsilis_fasciola | | +--+ | | | +----------- Lampsilis_ovata | | +--+ | | | +-------- Lampsilis_cardium__3 | | +--+ +--+ | +----- Lampsilis_cardium__2 | +--+ | | +-- Lampsilis_satura | +--+ | +-- Lampsilis_cardium__1 | | +-------------- Lampsilis_teres | | | | +-- Lampsilis_higginsii +-----+ +--------+ | | +-- Ortmanniana | | +--+ +-- Lampsilis_radiata | +-----+ | | +-- Lampsilis_siliquoidea | | +--+ +-- Lampsilis_hydiana | +--+ | | +-- Lampsilis_bergmanni +--+ | +-- Lampsilis_virescens +--+ +-- Lampsilis_straminea
Szumowski et al., 2012 [Publ 3569], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 15 | 14 | 9 | -- |
+----------------------- Ellipsaria_lineolata ** | --+ +-------------------- Truncilla | | +--+ +----------------- Obliquaria | | | | +-------------- Potamilus +--+ | | | +----- Lampsilis_ornata | | +-----+ | | | | +-- Lampsilis_cardium +--+ | +--+ | | +-- Lampsilis_ovata | | | | +-------- Lampsilis_teres | +--+ +--+ | +----- Lampsilis_siliquoidea | +--+ | | +-- Ortmanniana | +--+ | +-- Lampsilis_higginsii | | +----- Hamiota | | +-----+ +-- Epioblasma | | +--+-- Cambarunio | +-- Ligumia
Huang et al., 2019 [Publ 3843], fig. S4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 199 | 13 | 11 | -- |
+----- Ellipsaria_lineolata ** | +----- Potamilus_leptodon | +----- Medionidus | +----- Potamilus_alatus | +----- Ptychobranchus --+ +----- Truncilla | +----- Venustaconcha | +----- Cambarunio | +----- Leaunio | | +-- Ortmanniana +--+ +-- Lampsilis
Smith et al., 2020 [Publ 4129], fig. 2-3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 27 | 19 | 7 | -- |
+-------------- Obliquaria | --+ +----------- Cyrtonaias | | | | +-- Pachynaias +--+ +-----+ | | +-- Lampsilis | | +--+ +-- Ellipsaria_lineolata ** | +--+ | | +-- Truncilla +--+ | +-- Atlanticoncha +--+ +-- Potamilus
Huang et al., 2019 [Publ 3843], fig. S3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 197 | 13 | 11 | -- |
+-------------------- Potamilus_leptodon | --+ +----------------- Potamilus_alatus | | | | +-- Medionidus +--+ +-----------+ | | +-- Ptychobranchus | | +--+ +-- Ellipsaria_lineolata ** | +--------+ | | +-- Truncilla +--+ | +-------- Leaunio | | +--+ +-- Venustaconcha | +--+ | | +-- Cambarunio +--+ | +-- Ortmanniana +--+ +-- Lampsilis
Campbell et al., 2005 [Publ 2660], fig. 1
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 101 | 42 | 22 | -- |
+-------- Toxolasma
+--------------------+
| | +----- Obliquaria
| +--+
| | +-- Cyrtonaias
| +--+
| +-- Glebula
|
| +-------------- Potamilus
| |
| | +-------- Medionidus_acutissimus
--+ | +--+
| +-----------+ | | +----- Lemiox
| | | | +--+
| | | | | +-- Dromus
| | | | +--+
| | +--+ +-- Cyprogenia
| | |
| | | +-- Sagittunio
| | | +--+
| | | | +-- Medionidus_conradicus
+--+ +-----+
| | +-- Ptychobranchus
| +--+
| +-- Venustaconcha_ellipsiformis__2
|
| +-- Ellipsaria_lineolata **
| +--------------------+
| | +-- Truncilla
| |
| | +-------------------- Villosa
+--+ |
| | +-- Obovaria_olivaria
| | +--------+
| | | +-- Venustaconcha_ellipsiformis__1
| | +-----+
+--+ | | +-------- Epioblasma
| | +--+
| | | +----- Obovaria_unicolor
| | +--+
| | | +-- Obovaria_arkansasensis
| | +--+
| | +-- Obovaria_subrotunda
+--+
| +-------- Hamiota
| |
| +-----+ +-- Lampsilis_cardium
| | | +--+
| | | | +-- Lampsilis_ovata
| | +--+
| | | +-- Ortmanniana_pectorosa
+--+ +--+
| +-- Lampsilis_ornata
|
| +-- Ligumia
| +--------+
| | +-- Cambarunio
+--+
| +-------- Lampsilis_teres
+--+
| +----- Ortmanniana_ligamentina
+--+
| +-- Lampsilis_siliquoidea
+--+
+-- Leaunio
Burlakova et al., 2019 [Publ 3899], fig. 1
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 32 | 25 | 17 | -- |
+----------------- Toxolasma | | +-------------- Potamilus | | | | +-- Ellipsaria_lineolata ** | +-----------+ --+ | +-- Truncilla | | | | +----- Medionidus | +--------+ | | | +-- Lemiox | | +--+ +--+ +-- Dromus | | +----------- Cambarunio | | | +----------- Leaunio | | | +----------- Villosa | | | | +-- Sagittunio | +--------+ +--+ +-- Lampsilis_ovata | | +----- Venustaconcha +-----+ | | +-- Epioblasma | +--+ | +-- Obovaria | | +-------- Lampsilis_teres +--+ | +----- Lampsilis_siliquoidea +--+ | +-- Lampsilis_hydiana +--+ +-- Lampsilis_straminea
Campbell et al., 2005 [Publ 2660], fig. 2
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 101 | 42 | 22 | -- |
+----- Obliquaria
+--------+
| | +-- Cyrtonaias
| +--+
| +-- Glebula
|
| +----------- Sagittunio
| |
| +----------- Leaunio
| |
| +----------- Potamilus
| |
| +----------- Hamiota
| |
| | +-- Ellipsaria_lineolata **
--+ +--------+
| | +-- Truncilla
| |
| | +----- Lampsilis_teres
| +-----+
| | | +-- Ortmanniana_ligamentina
| | +--+
| | +-- Lampsilis_siliquoidea
| |
| | +----- Villosa
| +-----+
| | | +-- Ligumia
| | +--+
| | +-- Cambarunio
| |
+--+ +-------- Ortmanniana_pectorosa
+--+
| | +----- Lampsilis_ornata
| +--+
| | +-- Lampsilis_cardium
| +--+
| +-- Lampsilis_ovata
|
| +-------- Obovaria_olivaria
| |
| +-------- Venustaconcha_ellipsiformis__2
+--+
| +-------- Epioblasma
| |
| | +----- Obovaria_unicolor
| +--+
| | +-- Obovaria_arkansasensis
| +--+
| +-- Obovaria_subrotunda
|
| +-- Ptychobranchus
| +-----+
| | +-- Venustaconcha_ellipsiformis__1
| |
+--+ +----- Medionidus_conradicus
| |
| | +-- Lemiox
+--+--+
| +-- Medionidus_acutissimus
|
| +-- Dromus
+--+
+-- Cyprogenia
Breton et al., 2011 [Publ 3376], fig. 3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 37 | 12 | 7 | -- |
+----------------- Toxolasma | --+ +-------------- Ellipsaria_lineolata ** | | +--+ +----------- Truncilla | | +--+ +-- Lemiox | +-----+ | | +-- Potamilus +--+ | +----- Lampsilis +--+ | +-- Cambarunio +--+ +-- Venustaconcha
Saxon et al., 2023 [Publ 4338], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 4 | 4 | 1 | -- |
+-- Ellipsaria_lineolata ** --+ +-- Truncilla
Boyer et al., 2011 [Publ 2718], fig. 3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 34 | 15 | 9 | -- |
+----------- Toxolasma | | +-------- Obliquaria --+ | | | +----- Obovaria | | | | | +----- Lampsilis_cardium +--+ | | +----- Potamilus | | | | +-- Epioblasma | +--+ | | +-- Lampsilis_siliquoidea +--+ | +-- Ortmanniana +--+ | +-- Lampsilis_higginsii | | +-- Ligumia +--+ | +-- Lampsilis_teres | | +-- Ellipsaria_lineolata ** +--+ +-- Truncilla
Chase et al., 2018 [Publ 3847], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 38 | 12 | 7 | -- |
+----------------- Toxolasma | --+ +-------------- Venustaconcha | | +--+ +-- Lemiox | +--------+ | | +-- Lampsilis +--+ | +-------- Potamilus +--+ | +----- Cambarunio +--+ | +-- Ellipsaria_lineolata ** +--+ +-- Truncilla
Lydeard et al., 1996 [Publ 2656], fig. 3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 26 | 8 | 6 | -- |
+-------------- Potamilus_fragilis | --+ +----------- Ptychobranchus | | +--+ +-------- Medionidus | | +--+ +----- Potamilus_purpuratus | | +--+----- Lampsilis | | +-- Ellipsaria_lineolata ** +--+ +-- Villosa
Huang et al., 2002 [Publ 2657], fig. 1
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 33 | 7 | 6 | -- |
+----------------- Medionidus --+ | +-------------- Potamilus_fragilis +--+ | +----------- Ptychobranchus +--+ | +-------- Potamilus_purpuratus +--+ | +----- Lampsilis +--+ | +-- Villosa +--+ +-- Ellipsaria_lineolata **
Krebs et al., 2003 [Publ 2691], fig. 3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 32 | 10 | 7 | -- |
+----- Ptychobranchus
+--------+
| | +-- Potamilus_fragilis
| +--+
| +-- Medionidus
--+
| +-- Villosa
| +--------+
| | +-- Ellipsaria_lineolata **
+--+
| +-------- Lampsilis_teres
+--+
| +----- Lampsilis_siliquoidea
+--+
| +-- Potamilus_purpuratus
+--+
+-- Potamilus_alatus
Huang et al., 2019 [Publ 3843], fig. 2
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 199 | 13 | 11 | -- |
+-------------- Potamilus_leptodon | | +----------- Potamilus_alatus --+ | | | +-------- Venustaconcha | | | +--+ +-------- Leaunio | | | | +-- Ellipsaria_lineolata ** | +-----+ +--+ +-- Truncilla | | +-- Medionidus +-----+ | +-- Ptychobranchus | | +----- Cambarunio +--+ | +-- Ortmanniana +--+ +-- Lampsilis
Huang et al., 2002 [Publ 2657], fig. 2
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 33 | 7 | 6 | -- |
+-- Villosa | +-- Ellipsaria_lineolata ** | --+-- Lampsilis | +-- Potamilus | +-- Ptychobranchus
Boyer et al., 2011 [Publ 2718], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 37 | 15 | 9 | -- |
+----------------- Potamilus | | +-- Ellipsaria_lineolata ** --+ +-----------+ | | +-- Truncilla | | +--+ +----------- Lampsilis_cardium | | | | +----- Ligumia | +-----+ +--+ | +-- Obovaria | +--+ | +-- Epioblasma | | +-------- Lampsilis_teres +--+ | +----- Lampsilis_siliquoidea +--+ | +-- Ortmanniana +--+ +-- Lampsilis_higginsii
Inoue et al., 2020 [Publ 3941], fig. 3
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 41 | 26 | 6 | -- |
+----------------------------------- Toxolasma | --+ +-------------------------------- Potamilus | | | | +-- Ellipsaria_lineolata ** +--+ +--------------------------+ | | +-- Truncilla | | | | +-------------------------- Leaunio +--+ | | | +-------------------- Lampsilis_bracteata | | | | | +--+ +----------------- Lampsilis_fasciola | | | | | +--+ | +--+ +-------------- Lampsilis_ornata | | | | | | +--+ +-- Lampsilis_ovata | | | +--------+ | | | | +-- Lampsilis_cariosa | | +--+ | | | +-------- Lampsilis_cardium__3 +--+ +--+ | | +----- Lampsilis_cardium__2 | +--+ | | +-- Lampsilis_satura | +--+ | +-- Lampsilis_cardium__1 | | +-- Lampsilis_higginsii | +--------------+ | | +-- Ortmanniana +-----+ | +-------------- Lampsilis_teres | | +--+ +-- Lampsilis_radiata | +--------+ | | +-- Lampsilis_siliquoidea +--+ | +-------- Lampsilis_bergmanni +--+ | +----- Lampsilis_hydiana +--+ | +-- Lampsilis_virescens +--+ +-- Lampsilis_straminea
Lydeard et al., 1996 [Publ 2656], fig. 4
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 27 | 8 | 6 | -- |
+-------------------- Obliquaria --+ | +----------------- Medionidus +--+ | +-------------- Ptychobranchus +--+ | +----------- Potamilus_fragilis +--+ | +-------- Potamilus_purpuratus +--+ | +----- Ellipsaria_lineolata ** +--+ | +-- Villosa +--+ +-- Lampsilis
Smith et al., 2019 [Publ 3951], fig. 2
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 40 | 35 | 19 | -- |
+----------------------- Obliquaria | | +-- Medionidus | +--+ | | +-- Lemiox --+ +--------------+ | | | +-- Cyprogenia | | +--+ | | +-- Ptychobranchus | | +--+ +-------- Potamilus | +--------+ | | | +----- Atlanticoncha | | +--+ | | | +-- Ellipsaria_lineolata ** | | +--+ +--+ +-- Truncilla | | +-- Hamiota | +-----------+ | | +-- Villosa | | +--+ +----------- Ligumia | | | | +----- Venustaconcha +--+ +--+ | | | +-- Obovaria | | +--+ +--+ +-- Epioblasma | | +----- Ortmanniana_pectorosa +--+ | +-- Ortmanniana_ligamentina +--+ +-- Lampsilis
Smith et al., 2020 [Publ 4129], fig. 1
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 27 | 19 | 7 | -- |
+-------------- Obliquaria | --+ +----------- Cyrtonaias | | | | +-- Pachynaias +--+ +-----+ | | +-- Lampsilis | | +--+ +-- Ellipsaria_lineolata ** | +--+ | | +-- Truncilla +--+ | +-- Atlanticoncha +--+ +-- Potamilus
Zanatta & Murphy, 2006 [Publ 2672], fig. 1
| tT | bi | riS | oT | roT | roS | iD | |
| 1 | 1 | 0 | 1 | 55 | 47 | 22 | -- |
+-- Cyrtonaias
+--------------------------------+
| +-- Glebula
|
--+ +-------------------------------- Paetulunio
| |
| | +-- Obliquaria
+--+ +--------------------------+
| | +-- Toxolasma
| |
| | +-------------------------- Sagittunio
+--+ |
| | +----------- Potamilus
| | |
| | +-----------+ +-- Medionidus_conradicus
| | | | +-----+
+--+ | | | +-- Ptychobranchus
| | +--+
| | | +----- Medionidus_acutissimus
| | | |
| | +--+----- Lemiox
| | |
| | | +-- Dromus
+--+ +--+
| +-- Cyprogenia
|
| +----- Lampsilis_teres
| +--------------+
| | | +-- Truncilla
| | +--+
| | +-- Ellipsaria_lineolata **
| |
+--+ +----------------- Leaunio
| |
| | +----------- Hamiota
| | |
| | +--+ +-- Lampsilis_fasciola
+--+ | | +-----+
| | | | +-- Ortmanniana_pectorosa
| | +--+
| | | +----- Lampsilis_ornata
| | +--+
| | | +-- Lampsilis_ovata
+--+ +--+
| +-- Lampsilis_cardium
|
| +----- Venustaconcha
| +-----+
| | | +-- Obovaria
| | +--+
+--+ +-- Epioblasma
|
| +-------- Lampsilis_siliquoidea
+--+
| +----- Ortmanniana_ligamentina
+--+
| +-- Cambarunio
+--+
+-- Ligumia
