Crassostrea subtrigonalis Evans and Shumard 1857 (oyster)

Bivalvia - Ostreida - Ostreidae

Alternative combination: Ostrea subtrigonalis

Synonyms: Crassostrea glabra Meek and Hayden 1857, Ostrea arcuatilis Meek 1873, Ostrea glabra Meek and Hayden 1857, Ostrea glabra arcuatilis Meek 1873, Ostrea glabra wyomingensis Meek 1872, Ostrea insecura White 1876, Ostrea insecuris White 1876, Ostrea wyomingensis Meek 1872

Belongs to Crassostrea according to I. G. Speden 1970

See also Cvancara 1966

Sister taxa: Crassostrea (Cymbulostrea), Crassostrea (Heterostrea), Crassostrea afra, Crassostrea alabamiensis, Crassostrea angulata, Crassostrea ashleyi, Crassostrea columbiensis, Crassostrea contracta, Crassostrea corteziensis, Crassostrea cucullaris, Crassostrea cuebana, Crassostrea cyathula, Crassostrea cymaeformis, Crassostrea englekyi, Crassostrea eucorrugata, Crassostrea gigas, Crassostrea gryphoides, Crassostrea hatcheri, Crassostrea kawauchidensis, Crassostrea laperrinei, Crassostrea patagonica, Crassostrea raincourti, Crassostrea rhizophorae, Crassostrea rutiformis, Crassostrea sikamea, Crassostrea soudanensis, Crassostrea tectonica, Crassostrea tenera, Crassostrea tetoriensis, Crassostrea titan, Crassostrea transitoria, Crassostrea vaquerosensis, Crassostrea virginica

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Foremost Fm (marine beds) (Cretaceous of Alberta)

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