Chlamys (Placopecten) clintonius donaldi Tucker-Rowland, 1938
TUCKER-ROWLAND, H. I. 1938. The Atlantic and Gulf Coast Tertiary Pectinidae of The United States. Section III Systematic Descriptions. Mémoires du Musée Royal D'Historie Naturelle de Belgique [2me Série], 13: 1-76, pls. 1-6. [p. 54, pl. 1, fig. 12]
«Chlamys (Placopecten) clintonius donaldi, subsp. nov.
Pl. I, fig. 12. DESCRIPTION.— This subspecies differs from clintinius, s.s. in its much greater degree of convexity, and definitely coarser radial sculpture. The radial cords are low, rounded, and more widely spaced than clintonius s.s. There is a marked tendency for the cords to curve near the periphery, following a line of glowth. On the holotype the cords appear to be offset. Fine camptonectes sculpture in the interspaces of better preserved valves.
DIMENSIONS.— Holotype, height 125, width 125, convexity 30 mm. LOCALITIES.— Grove Wharf, Va. (type); Kingsmill, Va. HORIZON.— Yorktown (Miocene). PARATYPES.— Cornell Universitv. HOLOTYPE.— U. S. National Museum, Cat. Nº 144996.» HELEN IONE TUCKER-ROWLAND, 1938
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H. I. Tucker-Rowland, 1938, plate 1.
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