Dimarzipecten crocus (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, 103-156 p., pls. 1-16. Carnegie Institution of Washington, Washington, DC [p. 135, pl. 9, figs. 2a-b; pl. 11, fig. 9]
1919 Chlamys (Chlamys) crocus Cooke, 1919
C. W. Cooke, 1919, plates 9, 11.
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«The following is a description of this species:
Shell equivalve, inequilateral, moderately convex; about 22 round ribs, separated by slightly narrower interspaces; surface of the ribs with curved imbricating spines, convex towards the umbones, and with very faint radiating striae; interspaces with sculpture of fine, close-set, concentric striae; near the ventral margin a small thread appears in each interspace; submargins depressed, ornamented with small radial threads and fine concentric striae; ears moderately large, subequal, with radial, nodose riblets. Alt., 39 mm.; lat., 36 mm.; diam., 14 mm. Locality.— Roadside, descent to Crocus Bay, Anguilla, station 6893, also 6894 and 6965, Vaughan. Geologic horizon.— Oligocene. Type.— U. S. Nat. Mus. No. 167079.» CHARLES WYTHE COOKE, 1919
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«Dimarzipecten crocus (Cooke, 1919), of the late Early to early Middle Miocene Anguilla Formation of Anguilla, has a medial costa in interspaces that begins much later than in I. interlineata. Furthermore, D. crocus is chlamydiform, with a narrow umbonal angle and asymmetric auricles, and has a coarse oblique antimarginal microsculpture that is prominent in rib interspaces and on disk flanks in early ontogeny»
WALLER, T. R. 2011. Neogene Paleontology of the Northern Dominican Republic. 24. Propeamussiidae and Pectinidae (Mollusca: Bivalvia: Pectinoidea) of the Cibao Valley. Bulletins of American Paleontology, 381: 1-197, pls. 1-18. [p. 32]
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«Discussion.— The two broken specimens that Cooke (1919, p. 132) named Pecten clevei probably are the same species as Dimarzipecten crocus. Dimarzipecten crocus is common in the upper Oligocene and lower Miocene beds from the Caribbean area, Florida, South Carolina, and North Carolina. Its characteristic rib and scale pattern makes it difficult to group with any other known pectinid. It develops a small riblet that nearly fills the interspace between the primary ribs. The scales on the primary ribs are distant but large for the size of the valve. These characteristics and its higher-than-long dimensions serve to distinguish the species. I hesitate to base a genus on a single species, but the taxon is readily distinguishable from any other known pectinid.»
WARD, L. W. 1992. Molluscan bioestratigraphy of the Miocene, middle Atlantic Coastal Plain of North America. Memoirs of theVirginia Museum of Natural History, 2: 1-159, pls. 1-26. [p. 68]
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Dimarzipecten crocus (Cooke, 1919); L. W. Ward, 1992, Molluscan bioestratigraphy of the Miocene, middle Atlantic Coastal Plain of North America, plate 24, figure 2.
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