Ptychomya esbelta (FOSSIL) L. Carmona, Lazo& Soto, 2017 † Argentina
Ptychomya koeneni (FOSSIL) Behrendsen, 1892 † Argentina, Neuquen
Ptychomya koeneni coihuicoensis (FOSSIL) Behrendsen, 1892 † Patagonia55 mm
Ptychomya stantoni (FOSSIL) Cragin, 1905 † Mexico, Chiapas, Ocozocoautla de Espinosa