ammonites
Pteria richardsoni Girty 1908 (pearl oyster)

Bivalvia - Ostreida - Pteriidae

Full reference: G. H. Girty. 1908. The Guadalupian fauna. United States Geological Survey Professional Paper 58:1-651

Belongs to Pteria according to G. H. Girty 1908

Sister taxa: Pteria argentea, Pteria bisincilis, Pteria colymbus, Pteria dianensis, Pteria hechuanensis, Pteria hirundo, Pteria infelix, Pteria inornata, Pteria lata, Pteria limula, Pteria murchisoni, Pteria nasuta, Pteria notukeuensis, Pteria pellucida, Pteria penguin, Pteria peregrina, Pteria plana, Pteria spedeni, Pteria squamifera, Pteria ussurica, Pteria yonganensis

Ecology: stationary epifaunal suspension feeder