†Eoursivivas Ota 1964 (clam)
Bivalvia - Pholadida - Corbulidae
Parent taxon: Corbulidae according to I. Hayami 1975
Sister taxa: Aloides, Anticorbula, Antiquicorbula, Bicorbula, Bothrocorbula, Caestocorbulinae, Caryocorbula, Caryocorbulinae, Concentricavalva, Corbula, Corbulamellinae, Corbulinae, Cuneocorbula, Cuspicorbula, Erodona, Erodoninae, Exallocorbula, Ficusocorbula, Hexacorbula, Indocorbula, Juliacorbula, Lentidiinae, Lentidinae, Nipponicorbula, Ostomya, Pachydon, Pachydontinae, Pachyrotunda, Panamicorbula, Potamocorbula, Pulsidis, Tenuicorbula
Subtaxa: none
Ecology: stationary infaunal suspension feeder