Dhondtichlamys greggi (Harris, 1897)
HARRIS, G. D. 1897. The Lignitic stage, Part I, stratigraphy and Pelecypoda. Bulletins of American Paleontology, 2 (9): 1-102, pls. 1-14. [p. 45, pl. 7, figs. 4, 5]
1897 Chlamys greggi Harris, 1897
G. D. Harris, 1897, plate 7.
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«Syn. ? P. deshayeii Aid., Bull. No. I, Geol. Surv. Ala., p. 57, 1886.
Specific characteristics.— General appearance as figured; exterior with about 25 to 30 strong, smooth, sharply defined ribs radiating from the beak without bifurcation, ears with 5 or 6 radiating folds or costae; interspaces about twice the breadth of the ribs, anteriorly and posteriorly showing the microscopic ex-curving striae of Camptonectes
This species is of nearly the form and size of C. choctavensis, from which it is distinguished by its small number of ribs, its lack of costal bifurcation and imbrication, and the presence of Camptonectes structure in the interspaces. Right valves of this species are somewhat gibbous. Localities.— Alabama: Yellow Bluff; Gregg's Landing; Bell's Landing: Lower Peach Tree Landing. Georgia: Ft. Gaines.
Type.— Gregg's Landing, Harris' collection.»
GILBERT DENNISON HARRIS, 1897
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«Dhondtichlamys survived the end-Cretaceous mass extinction and is the earliest coarsely ribbed pectinid to be found in the Paleocene. The specimens that I have been able to examine directly belong to two possibly intergradational species, Dhondtichlamys johnsoni (Clark, 1895) and D. greggi (Harris, 1897), from the Upper Paleocene (Thanetian) and Lower Eocene (Ypresian) of the Gulf Coastal Plain of southeastern United States (see Palmer and Brann 1965, for stratigraphic and geographic data). These species resemble Cretaceous Dhondtichlamys in shell microstructure, shape, ribbing style, and microsculpture. Like some Cretaceous species, the lengths of the anterior and posterior auricles of the Paleocene forms are nearly equal, and the posterior margin of the posterior auricles is convex outward.»
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. 11]
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