Pecten vaughani var. flabellum 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. 134, pl. 8, figs. 6a, 6b, 7]
«Pecten vaughani var. flabellum, new variety.
(Plate 8, Figures 6 a, b, 7.) The following is a description of this variety:
Shell small, equivalve, depressed, polished, with 15 round, radiating ribs, rarely extending to the beaks, separated by equal concave interspaces; submargins narrow, smooth, convex, usually separated from the body of the shell by an angulation; concentric sculpture of close, fine growth-lines, usually obliterated; ears large, subequal; posterior ears smooth except for fine growthlines; left anterior ear with obscure radiating riblets, right anterior ear with about 6 strong scabrous riblets; byssal notch about one-half the length of the ear; interior of the disk grooved in accordance with the ribbing.
Alt., 22 mm.; lat., 22 mm.; diameter of joined valves, about 7 mm. Pecten vaughani closely resembles this variety, but is usually a little smaller, the ribs are narrower and generally extend to the beak, and the submargins are flatter and more acutely angulated than those of the Cuban form. In general appearance typical Pecten vaughani is neater and more clean-cut than the variety flabellum.
Localities.— La Cruz and Santiago, Cuba, stations 3192, 3439, 3441, 3446, and 5255 (types); Vaughan, Black. Geologic horizon.— Oligocene. Type.— U. S. Nat. Mus. No. 167089.» CHARLES WYTHE COOKE, 1919
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C. W. Cooke, 1919, plate 8.
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