The Collaborative International Dictionary of English v.0.48:
pelecypod \pelecypod\ pelecypodous \pelecypodous\adj. 1. same as lamellibranchiate. Syn: lamellibranch, lamellibranchiate. [WordNet 1.5]WordNet (r) 3.0 (2006):
pelecypodous adj 1: bivalve [syn: lamellibranch, pelecypod, pelecypodous]