Pecten biddleana Kellum, 1926
KELLUM, L. B. 1926. Paleontology and stratigraphy of the Castle Hayne and Trent marls in North Carolina. United States Geological Survey Professional Paper, 143: 1-56, pls. 1-11. [p. 20, pl. 2, fig. 4]
«Pecten biddleana Kellum, n. sp.
Plate II, Figure 4 Shell of medium size, equilateral; the left valve sculptured by 15 rounded primary ribs, alternating with wider interspaces in which are one or two low secondary ribs; submargins broad, steep, and smooth; ears oblique, sculptured with numerous fine radiating ribs and concentric imbrications; the umbonal point projects slightly above the· hinge line; ·internal character of valve unknown.
The only specimen of this shell obtained from the type locality is a worn left valve. A single right valve collected at Polloksville, Jones County, N. C., appears to be the same species. The following paragraph is a description of this valve: Shell similar to the left valve from Biddle Landing; sculptured by seventeen rounded ribs and nearly equal interspaces. In the center of each interspace is a single, very fine secondary rib. Entire surface sculptured with concentric laminae; inner margin strongly crenulated with angular grooves which disappear. toward the center of the disk; umbonal point projects above the hinge line. Extent of ears unknown. Dimensions of left valve from Biddle Landing: Height, 26.5 millimeters; breadth, 24.5 millimeters; depth, about 3.5 millimeters; length of hinge line, 12.5 millimeters. . Localities: Biddle Landing, Neuse River, Craven County; Polloksville, Jones County, N. C. Geologic horizon: Castle Hayne marl, of Jackson Eocene age.» LEWIS BURNETT KELLUM, 1926 |
L. B. Kellum, 1926, plate 2.
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