Pecten palmipes Tate, 1886
TATE, R. 1886. The lamellibranchs of Older Tertiary of Australia (part 1). Transactions and Proceedings and Report of the Royal Society of South Australia, 8: 96-158. [p. 105, pl. 5, fig. 4; pl. 7, figs. 4a-b]
«Pecten palmipes, spec. nov. Plate v., fig. 4. Plate vii., figs. 4a—4b.
Shell triangularly orbicular, inequilateral by projection of posterior part; slightly inequivalve, the right valve a little more convex than the left; ears large subequal, umbos depressed. Right valve rayed with seven broad rounded plications, gradually becoming broader and flatter as they approach the margin; the interstitial spaces are narrow and deep. The whole surface rayed with numerous linear ridges, the interspaces minutely granulated. Posterior ear triangular, obliquely truncated, rayed; anterior ear, larger, projecting, outer margin curved, indented on the under side, radially ridged. Left valve more depressed in the umbonal region, rayed with six compressed elevated plicae, the flatly rounded surfaces of which are bordered by two furrows, increasing in number towards the front; the interstitial spaces between the plicae are very broad and deeply concave, bearing riblets in old shells towards the margin. Spaces between the riblets minutely granulated. Ears triangular obliquely or perpendicularly truncated, radially ridged, subequal, the anterior one larger.
Dimensions of largest specimen.— Length 71, height 71, thickness through both valves 27 millimetres. Localities.— Edithburgh, Yorke Peninsula; oyster banks, Aldinga Bay. This species has the general characters of the recent South Australian P. bifrons, of Lamarck, possessing also its peculiar granular shagreen-sculpture; but it differs by the obliquity of its valves, in being higher than long, and in the form of its radial plicae; the interior is plicated but not ribbed as in the living species.» RALPH TATE, 1886 |
R. Tate, 1886, plate 5.
R. Tate, 1886, plate 7.
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