Pecten (Chlamys) thomasi Mansfield, 1926
MANSFIELD, W. C. 1926. Fossils from quarries near Suva, Viti Levu, Fiji Islands, and from Vavao, Tonga Islands, with annotated bibliography of the geology of the Fiji Islands. Papers from the Department of Marine Biology of the Carnegie Institution of Washington, 23: 87-103, pls. 3-5. [p. 90, pl.5, figs. 1a, 1b]
«Pecten (Chlamys) thomasi, n. sp.
(Plate 5, Figures 1a and 1b.) Shell of medium size, oblique-ovate, solid, moderately inflated over the middle of the disk and compressed forward at the umbonal area. Hinge line short. Ribs 15 in number, low-keeled above and only slightly below, becoming more rounded distally; ribs separated by interspaces of about one-half their width. Radially sculptured over the whole surface of the disk and submargins by fine lines, being stronger over the ribs than intelspaces; concentrically sculptured by close-set, minute, nearly erect, imbricated lamellae. Anterior ear small, marked by 3 to 4 fine, minutely crenulated radials within the byssal area and 3 stronger ones in front of it; posterior ear terminally brohen off, but indicates similar markings to that of the anterior. Within, the resilium pit is triangular and large, on either side of which there are two other pits, the approximate ones marginate the ligamental area and the distal ones enter it.
The type is founded upon one left valve. Dimensions: length, 42 mm.; height, 45 mm. Type locality, Walu Bay, Fiji Islands. Coilected by A. O. Thomas. The external sculpture of Pecten thomasi somewhat resembles that of Pecten radula (Linné), while the hinge articulation resembles more closely that of Pecten plica Linné. The species is named in honor of Dr. A. O. Thomas, Professor of Paleontology, State University of Iowa, Iorva City, Iowa.» WENDELL CLAY MANSFIELD. 1926
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W. C. Mansfield, 1926, plate 5.
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