[5] During the Middle Jurassic, the fossil locations cited were seas, where this lampshell lived as a stationary epifaunal suspension feeder.

[6] Sharpirhynchia sharpi has a small shell, subtrigonal to transverse or laterally elongate in adults; unequally biconvex, dorsal valve more convex than ventral one, subglobose in profile.

Beak relatively long, acute, and suberect, with slightly incurved tip in adult; foramen big, oval, hypothyridid, with well developed rim; deltidial plates narrow, disjunct to just conjunct; beak ridges subangular; interareas small, but well defined and slightly concave, with fine and clear transverse lines.

Delthyrium wide, trapezoidal; lateral cavities narrow; dental plates long, beyond hinge zone, slightly divergent toward ventral floor at posterior parts and becoming parallel anteriorly; teeth short, very strong and massive, with expanded ends and crenulations; accessory denticulars and dental cavities present.

[2] The anatomical terms used in this description as defined by Williams and Brunton, 1997[7] can be found at the website on the Trenton Group fossils of the Department of Invertebrate Palaeontology of Harvard University.