Fig. 2 in Fossil Cenozoic crassatelline bivalves from Peru: New species and generic insights

Fig. 2. Hinge characters and other features of crassatellines. A, B. Crassatella vadosa Morton, 1834, Cretaceous. A. USNM 450460, Mississippi, USA. B. USNM 451089, Alabama, USA. C. Eucrassatella kingicola (Lamarck, 1805), UWBM 101886, Recent, Victoria, Australia. D. Hybolophus gibbosus Sowerby, 1832), SBMNH 213002, Recent, Gulf of California, Mexico. E. Hybolophus fluctuatus (Carpenter, 1864), SBMNH 137784, Recent, Santa Catalina Island, California. Left valves (A, C1, D1, E), right valves (B, C2, D2), valve in dorsal view (D3). Abbreviation: vmHP, ventral margin of the hinge plate.