†Isocyprina (Eotrapezium) Douvillé 1912 (clam)
Bivalvia - Cardiida - Arcticidae
Alternative spelling: Eotrapezium
Parent taxon: Isocyprina according to A. Marquez-Aliaga et al. 2010
See also Sepkoski 2002 and Vokes 1980
Sister taxa: Isocyprina alcyon, Isocyprina ancatruzi, Isocyprina concentrica, Isocyprina cyreniforme, Isocyprina ewaldi, Isocyprina lhasaensis, Protocardia (Isocyprina) timorensis
Subtaxa: Isocyprina (Eotrapezium) germari
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Jurassic of France (3 collections), Germany (5), Kenya (1), Portugal (2), Spain (14), Svalbard and Jan Mayen (1), Tanzania (2), the United Kingdom (5)
• Triassic of Austria (38), Peru (1), the United Kingdom (3)
Total: 75 collections including 78 occurrences