rhynchonella noun1 •Any member of the extinct genus †Rhynchonella of brachiopod, found in Silurian to Eocene strata worldwide.It is quite possible that the Maine rhynchonellas described as R. aspasia by Billings were descended from some one of these earlier rhynchonellas not yet separated into special (literary) groups. — 1900 formsrhynchonellas
