Decatopecten, G. B. Sowerby II, 1839

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 : 185

Key to species of Decatopecten from Australia

1 Shell c. 120 mm high, valves inequivalve and inequilateral, lv flat to weakly inflated, rv more convex, auricles subequal, 9–13 radial plicae, fine to coarse lamellae on plicae, secondary radial riblets in late growth stage, byssal notch shallow, byssal fasciole moderately wide, ctenolium weak .................................................................. D. radula

—— Shell oblong, with 5–7 radial plicae .......................................................................................... 2

2 Shell c. 45 mm high, almost equally convex, equivalve and equilateral, auricles subequal, 5 radial plicae, rarely 6–7, secondary radial riblets on plicae and interstices in late growth stage, byssal notch, byssal faciole and ctenolium lacking in adult stage .............................................................................................................. D. strangei