Irusella Hertlein and Grant 1972 (venus clam)
Bivalvia - Veneroidei - Veneridae
PaleoDB taxon number: 17756
Parent taxon: Venerinae according to E. V. Coan et al. 2000
Sister taxa: Antigona, Artena, Callithaca, Chione, Chioneryx, Chionista, Chionopsis, Circomphalus, Clausinella, Dosina, Dosiniini, Globivenus, Humilaria, Iliochione, Kuia, Leukoma, Marama, Melosia, Mercenaria, Paphonotia, Periglypta, Tapetini, Tawera, Turia, Venerini, Venus, Anomalocardia, Bassina, Placamen, Nioche, Timoclea, Austrovenus, Lirophora
Subtaxa: Irusella lamellifera
Ecology: facultatively mobile infaunal suspension feeder