Ptychobranchus (genus)

Ptychobranchus fasciolaris

Ptychobranchus occidentalis

Ptychobranchus foremanianus

Ptychobranchus subtentus

Ptychobranchus jonesi

Ptychobranchus greenii

Actinonaias

Aculamprotula

Acuticosta

Alasmidonta

Amblema

Anemina

Anodonta

Anodontoides

Arcidens

Arcidopsis

Arconaia

Arotonaias

Barynaias

Brazzaea

Caudiculatus

Chamberlainia

Coelatura

Contradens

Cristaria

Ctenodesma

Cuneopsis

Cyclonaias

Cyprogenia

Cyrtonaias

Delphinonaias

Diaurora

Discomya

Disconaias

Dromus

Ellipsaria

Elliptio

Elliptoideus

Elongaria

Ensidens

Epioblasma

Friersonia

Fusconaia

Germainaia

Gibbosula

Glebula

Gonidea

Grandidieria

Haasodonta

Hamiota

Harmandia

Hemistena

Hyriopsis

Inversidens

Inversiunio

Lamellidens

Lamprotula

Lampsilis

Lanceolaria

Lasmigona

Leguminaia

Lemiox

Lepidodesma

Leptodea

Ligumia

Martensnaias

Medionidus

Megalonaias

Microcondylaea

Micronaias

Modellnaia

Nephritica

Nephronaias

Nitia

Nodularia

Nyassunio

Obliquaria

Obovaria

Ortmanniana

Oxynaia

Pachynaias

Parreysia

Pegias

Physunio

Pilsbryoconcha

Plectomerus

Plethobasus

Pleurobema

Pleuronaia

Popenaias

Potamilus

Potomida

Pressidens

Prisodontopsis

Prohyriopsis

Pronodularia

Protunio

Pseudanodonta

Pseudobaphia

Pseudodon

Pseudodontopsis

Pseudospatha

Psoronaias

Psorula

Ptychobranchus

Ptychorhynchus

Pyganodon

Quadrula

Radiatula

Rectidens

Reticulatus

Rhombuniopsis

Scabies

Schepmania

Schistodesmus

Simpsonaias

Simpsonella

Sinanodonta

Solenaia

Sphenonaias

Strophitus

Theliderma

Toxolasma

Trapezoideus

Tritogonia

Truncilla

Unio

Uniomerus

Unionetta

Utterbackia

Venustaconcha

Villosa