Bivalvia - Ostreida - Ostreidae
Parent taxon: Crassostreinae according to R. L. Squires 2018
See also Bouchet et al. 2010 and Carter et al. 2011
Sister taxa: Flemingostreini, Helvetostrea, Ostrea tayloriana, Saccostrea, Striostreini, Talonostrea, Turkostreini
Subtaxa: Acutostrea
Ecology: stationary epifaunal suspension feeder
Distribution:
• Oligocene of United States (3: California, Washington collections)
• Eocene of United States (47: California, Oregon, Washington)
• Paleocene to Eocene of United States (3: California)
• Paleocene of the Netherlands (1), United States (2: California)
• Cretaceous of Afghanistan (2), Belgium (1), Egypt (6), France (1), Germany (3), Kazakhstan (3), Libya (1), the Netherlands (2), Niger (5), Oman (1), Pakistan (1), Poland (6), Turkmenistan (1), Ukraine (1), United States (89: Alabama, Arkansas, Delaware, Georgia, Maryland, Mississippi, New Jersey, New Mexico, North Carolina, South Carolina, Tennessee, Texas, Wyoming)
Total: 179 collections including 182 occurrences