Pseudamussium Mörch, 1853

Dijkstra, Henk H. & Beu, Alan G., 2018, Living Scallops of Australia and Adjacent Waters (Mollusca: Bivalvia: Pectinoidea: Propeamussiidae, Cyclochlamydidae and Pectinidae), Records of the Australian Museum (Rec. Aust. Mus.) 70 (2), pp. 113-330 : 171

Pseudamussium Mörch, 1853

Pseudamussium Mörch, 1853: 59 . Type species (ICZN Opinion 714, 1964): Pecten septemradiatus O. F. Müller, 1776 (= Ostrea peslutrae Linnaeus, 1771 ; Dijkstra, 1999: 427); Recent, eastern Atlantic.

Diagnosis. Palliolini with weakly inflated, fragile to sturdy, subcircular to circular shell, up to c. 50 mm in height; valves with plicae or costae, sculptured with delicate to rather prominent radial riblets and/or radial striae, and antimarginal microsculpture; left valve pre-radial microsculpture of fine, closely spaced commarginal lirae only. Auricles somewhat unequal in size. Byssal notch shallow, functional ctenolium weak (Dijkstra & Marshall, 2008: 70). Internal rib carinae lacking. Resilial teeth present, dorsal teeth weak or lacking, hinge surface with delicate, irregularly formed, transverse grooves.

Distribution. Miocene–Recent. Eastern Atlantic and southeastern Australia, sublittoral to bathyal.