Palaeoconcha

Palaeoconcha

[¦pāl·ē·ō′kaŋ·kə]
(paleontology)
An extinct order of simple, smooth-hinged bivalve mollusks.
References in periodicals archive ?
The Ordovician bivalve Palaeoconcha has a tablet substructure resembling more closely that of modern and fossil gastropods and cephalopods than modern bivalves (Carter and Clark, 1985).