Pecten (Plagioctenium) crucianus Cooke, 1919
COOKE, C. W. 1919. Tertiary mollusks from the Leeward Islands and Cuba. In: T. W. Vaughan (ed.), Contributions to the Geology and Paleontology of the West Indies, pp. 103-156. Carnegie Institution of Washington, Washington, DC. [p. 139, pl. 10, figs. 8, 9a-b]
Pecten (Plagioctenium) crucianus, new species.
(Plate 10, Figures 8, 9 a, b.) «The following is a description of this species:
Shell suborbicular, slightly oblique, moderately convex, with nearly equal valves and 20 to 22 convex ribs with equal interspaces, each containing 1 riblet; near the periphery 1 riblet is developed on the summit of each rib; submargins faintly ribbed; entire disk covered with minute, close, concentric, raised lamellae, fused on the summits of the riblets into evenly spaced, raised, transversely elongate nodes; anterior ears the larger; right anterior ear with about 5 strong riblets, other ears with many fine riblets; posterior ears oblique; byssal notch deep; internal surface channeled in harmony with the external ribbing. Alt., 35.4 mm.; lat., 35.4 mm.; diam. of left valve, 7.4 mm. Localities.— La Cruz and Santiago, Cuba, stations 3439, 3440 (type), 3441, Vaughan. Geologic horizon.— Oligocene. Type.— U. S. Nat. Mus. No. 167108.» CHARLES WYTHE COOKE, 1919
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C. W. Cooke, 1919, plate 10.
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