†Deltoideum (Deltoideum) Rollier 1917 (oyster)
Bivalvia - Ostreida - Gryphaeidae
Parent taxon: Deltoideum according to I. N. Kosenkoa 2016
Sister taxon: Deltoideum (Boreiodeltoideum)
Subtaxa: Deltoideum (Deltoideum) delta
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of the Russian Federation (5 collections)
• Jurassic of France (15), Germany (1), Lebanon (1), Poland (3), Portugal (3), the Russian Federation (2), the United Kingdom (31), Yemen (4)
Total: 65 collections including 69 occurrences