FIGURE 16 in Mollusks from late Mesozoic seep deposits, chiefly in California

FIGURE 16. Oxyeurax trapezoidalis (Stanton, 1895) from Cretaceous seep carbonates in California. A. Left valve showing the anterior adductor muscle scar, from Bear Creek (GZG.INV.85007). B. Dorsal view on a specimen from the Valanginian of Bear Creek showing pedal retractor scars and the sharply delineated escutcheon (GZG.INV.85008). C. Juvenile specimen with more oval shell shape and regular ornament, from Bear Creek (GZG.INV.85009). D. Dorsal view on specimen from Stanton's type series (USNM 23104) showing the outline of the hinge dentition, from the 'Reiff' locality. E-G. Holotype (USNM 23104), from Knoxville.