Palliolum prestwichii (Morris, 1852)
MORRIS, J. 1852. Descriptions of some fossil shells from the Lower Thanet Sands. The Quarterly Journal of the Geological Society of London, 8: 264-268, pls. 15, 16. [p. 266, pl. 16, figs. 8a-b]
1852 Pecten prestwichii Morris, 1852
J. Morris, 1852, plate 16.
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«Testa tenui, compressa, radiatim obsolete costata; costis 30-36, subsquamosis; interstitiis oblique irregulariter striatis; auriculis insequalibus, radiatis.
Shell thin, compressed; margin orbicular, with a rectangular beak; radiated with 30-36 very slightly raised ribs, distantly imbricated, the intervening furrows twice as large as the ribs, irregularly and obliquely striated; ears unequal, with three or four radiated costae.
Richborough Castle. Collected by Mr. Prestwich.» JOHN MORRIS, 1852
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«Palliolum is regarded here as the stem genus of the tribe. Among its oldest species are Palliolum prestwichi (Morris, 1852) from the Thanetian, Palliolum vincenti (Glibert, 1933) from the lower Lutetian, P. nysti (G. Vincent, 1881) from the middle Lutetian, and P. decussatum (Münster in Goldfuss, 1833) from the Rupelian, all of which occur in northern Europe.»
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. 17]
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