Anatipopecten Hertlein, 1936
HERTLEIN, L. G. 1936. Three new sections and rectifications of some specific names in the Pectinidae (I). The Nautilus, 50 (1): 24-27. [p. 26]
«ANATIPOPECTEN, new section
A group somewhat similar in form to Manupecten and Swiftopecten but which occurs in the Tertiary of eastern North America can be placed in a new section Anatipopecten, with Pecten anatipes Morton⁵ as type.»
⁵ Pecten anatipes Morton, Amer. Jour. Sci., Vol. 23, no. 2, 1833, p. 293, pl. 5, fig. 4. "From the overlying limestone of Claiborne, Alabama."— Cook & Mossom, 20th Ann. Rept Florida Geol. Surv., for 1927-1928 [issued 1929], p. 69, pl. 7, fig. 2. Glendon Limestone, Holmes County, Florida. Oligocene.
LEO GEORGE HERTLEIN, 1936
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P. anatipes. (S. G. M.); S. G. Morton, 1833, Supplement to the "Synopsis of the organic remains of the ferruginous sand formation of the United States" (I), plate 5, figure 5.
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Chlamys (Lyropecten) incertae sp. nov.; H. I. Tucker-Rowland, 1938, The Atlantic and Gulf Coast Tertiary Pectinidae of The United States, plate 5, figure 3.
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«Removal of Flexopecten and Annachlamys from the tribe Decatopectinini leaves eight genera in the tribe: Anguipecten Dall, Bartsch, and Rehder, 1938; Bractechlamys lredale. 1939; Decatopecten Riippel in Sowerby, 1839; Excellichlamys Iredale, 1939; Gloripallium Iredale, 1939; Juxtamusium Iredale, 1939; Mirapecten Dall, Bartsch. and Rehder, 1938; and Somalipecten Waller, 1986. All of these have tropical Indo-Pacific distributions at present, and there are few unequivocal fossil records older than the Miocene. There is but one comparable genus in older rocks, Anatipopecten Hertlein, 1936, based on a type species, Pecten anatipes Morton, 1833, from the Oligocene of Alabama (Glawe 1974: 8). It resembles Decatopecten in having a low number of broad plicae and very dense, closely spaced commarginal lamellae, but it differs in lacking welldeveloped intermediate hinge teeth and in having only very weakly developed internal rib carinae. The oldest species assigned to Anatipopecten is Chlamys (Lyropecten) incertae Tucker-Rowland, 1938, which is common in the upper part of the Crystal River Formation of Florida (Nicol et aL 1989) of probable latest Eocene (latest Priabonian) age. To judge from figures of this species in Nicol et al. 1989: pI. 1), internal rib carinae are present at least in smaller individuals and intermediate hinge teeth are also present. This species, unlike Annachlamys, lacks sculptural features that would suggest a relationship to the Pecten perplanus stock, but the presence of internal rib carinae would suggest derivation from an aequipectinine ancestor.»
WALLER, T. R. 2006. New Phylogenies of the Pectinidae (Mollusca: Bivalvia): reconciling Morphological and Molecular Approaches. In: S.E. Shumway & G.J. Parsons (Ed.), 2006: Scallops: Biology, Ecology and Aquaculture, 1-44, figs. 1.1-1.4. [p. 28]
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