Cyclopecten incongruus (Dall, 1916)
DALL, W. H. 1916. Diagnoses of new species of marine bivalve mollusks from the northwest coast of America in the United States National Museum. Proceedings of the United States National Museum, 52: 393-417 [p. 403]
1916 Pseudamusium incongruum Dall, 1916.
Cyclopecten incongruus (Dall); E. J. Moore, 1984, Tertiary Marine Pelecypods of California: Propeamussidae and Pectinidae, plate 1, figures 7, 8.
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«Shell small, white, suborbicular, left valve rather flat with short straight hinge line, ears concentrically scaly, sculpture of disk concentric continuous low sharp lamellae, crossed by slightly raised radial lines, conspicuous only at the intersections which form in the middle of the disk square reticulations with a small conspicuous pustule at each intersection; laterally these are more crowded; right valve concave near the margin, closely regularly concentrically lamellose; anterior ear with five radial lines, coarsely lamellose with a shallow notch and serrate margin. Height, 14; breadth, 15; diameter, 3 mm. Cat. No. 207273, U.S.N.M.
Station 2986, southwest of San Diego, in 684 fathoms. The sculpture is sparser and partly obsolete near the beaks.» WILLIAM HEALEY DALL, 1916
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«Remarks: This is the largest eastern Pacific Cyclopecten, none of the other species exceeding 10 mm in height. It is very distinct, and is known only from the type locality.»
GRAU, G. 1959. Pectinidae of the eastern Pacific. Allan Hancock Pacific Expeditions, 23: viii, 308 p., pls. 1-57. University of Southern California Press. Los Angeles, California. [p. 36]
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Cyclopecten incongruus (Dall) 1916; G. Grau, 1959, Pectinidae of the eastern Pacific, plate 13.
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