Pecten gracilis J. de C. Sowerby, 1825
SOWERBY, J. & J. DE C. SOWERBY. 1812-1846. The Mineral Conchology of Great Britain; or coloured figures and descriptions of those remains of testaceous animals or shells. 7 vols., pls. 1-648 (and 2 bis). London. [Volume 4, p. 129, pl. 393, fig. 2]
«PECTEN gracilis.
TAB. CCCXCIII. — fig. 2. SPEC. CHAR. Orbicular, thin, convex, with many small, longitudinal ridges; concentrically striated; striae close, elevated, sharp; ears unequal; margin entire.
LONGER than wide, every fourth ridge is rather more elevated than the rest, and has an opposed grove within the valve, that is much more conspicuous than those, which, on account of the thinness of the shell, are formed by the other ridges ; the strije are pretty uniform over the surface, and not divided into scales, they are however strongest near the margin. Two specimens, but of the same valve found in the Crag near Ipswich, were formerly added to my cabinet of Fossils by Mrs. Cobbold, they are extremely fragile.» JAMES DE CARLE SOWERBY, 1825
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J. Sowerby & J. de C. Sowerby, 1812-1846, plate 393.
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