Cytherea orbiculata Hall and Meek 1855 (venus clam)

Bivalvia - Cardiida - Veneridae

Full reference: J. Hall and F. B. Meek. 1855. Descriptions of New Species of Fossils, from the Cretaceous Formations of Nebraska, with Observations upon Baculites ovatus and B. compressus, and the Progressive Development of the Septa in Baculites, Ammonites, and Scaphites. Memoirs of the American Academy of Arts and Sciences 5(2):379-411

Belongs to Cytherea according to J. Hall and F. B. Meek 1855

Sister taxa: Cytherea adabionensis, Cytherea aequorea, Cytherea ambigua, Cytherea astartiformis, Cytherea avia, Cytherea capillacea, Cytherea corbuloides, Cytherea curionii, Cytherea elegantula, Cytherea elliptica, Cytherea erycinoides, Cytherea eversa, Cytherea gruneri, Cytherea humerosa, Cytherea hunteri, Cytherea imitabilis, Cytherea jerdoni, Cytherea lamberti, Cytherea mississippiensis, Cytherea mortoni, Cytherea murrayana, Cytherea nuttali, Cytherea obsoleta, Cytherea orbicularis, Cytherea oregonensis, Cytherea paucirugata, Cytherea pectinata, Cytherea perbrevis, Cytherea poulsoni, Cytherea rawesi, Cytherea rhaetica, Cytherea rothi, Cytherea scinctilla, Cytherea sobrina, Cytherea soror, Cytherea subcrassa, Cytherea submultistriata, Cytherea tenuidentata, Cytherea trigoniata, Cytherea wapsharei, Cytherea wilsoni, Cytherea wohltmanni

Ecology: facultatively mobile infaunal suspension feeder

Distribution: found only at five miles below Missouri and James River intersection ( of South Dakota)

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