Argopecten revellei (Durham, 1950)
DURHAM, J. W. 1950. Megascopic paleontology and marine stratigraphy. In: 1940 E. W. Scripps Cruise to the Gulf of California, Part. II. Geological Societyof America Memoir 43, p. 1-216, pls. 1-48. [p. 63, pl. 9, figs. 3, 6, 9]
1950 Aequipecten revellei Durham, 1950
J. W. Durham, 1950, plate 9.
|
«Shell of medium size, equivalved, beaks low, not prominent, very similar to A. subdolus (Hertlein); right valve with 22-23 low rounded ribs with very narrow V-shaped interspaces; left valve with corresponding ribs but wider interspaces; anterior ear of right valve with a moderately developed byssal notch and about four fairly wide radial ribs; posterior ear with numerous fine radial ribs, becoming obsolete near hinge line; ears of left valve correspondingly ornamented; hinge line between seven-twelfths and two-thirds the length of the shell, thus separating this species from A. subdolus (Hertlein) which has a hinge line only very slightly over half as long as the length of the shell.
Dimensions of holotype: Length 60.0 mm, height 58.1 mm, thickness (both valves) 25 mm, length of hinge line 36.4 mm. Holotype no. 15510, paratypes nos. 15555, 15556, 15623 (all from loc. A 3566). OCCURRENCE: locs. A 3498, A 3505, A 3566, A 3568. RANGE: middle Pliocene». JOHN WYATT DURHAM, 1950
|