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Meekopinna sagitta Chronic 1952 (clam)

Bivalvia - Pinnidae

Alternative combination: Aviculopinna sagitta

Full reference: H. Chronic. 1952. Molluscan fauna from the Permian Kaibab Formation, Walnut Canyon, Arizona. Geological Society America Bulletin 63(2):95-166

Belongs to Meekopinna according to T. E. Yancey 1978

Sister taxon: Meekopinna americana

Type specimen: Mus N. Ariz G2.1300, a valve (Left valve). Its type locality is Bottomless Pits, Bed 9, Kaibab Formation, Walnut Canyon, which is in a Roadian shallow subtidal limestone in the Kaibab Formation of Arizona.

Ecology: stationary semi-infaunal suspension feeder

Average measurements (in mm): shell 12.4 x 19.5, valve length 57.4