Carolinapecten eboreus watsonensis (Mansfield, 1936)
MANSFIELD, W. C. 1936. Stratigraphic significance of Miocene, Pliocene and Pleistocene Pectinidae in the Southeastern United States. Journal of Paleontology, 10 (3): 168-192, pls. 22-23. [p. 188, pl. 23, figs. 1-2]
1936 Pecten (Chlamys) eboreus watsonensis Mansfield, 1936
W. C. Mansfield, 1936, plate 23.
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«Shell rather large, ovate, slightly inequilateral, the posterior region being more produced and moderately inflated, the left valve slightly more so than the right. Ears rather large; right anterior with a shallow byssal notch and ornamented with 4 weak radials and fine concentric lamellae; lef t posterior ear with about 6 radials. Both valves sculptured with 18 nearly flat, nearly smooth, moderately narrow ribs separated by spaces about as wide as ribs. Both ribs and interspaces sculptured with coarse concentric imbricated lamellae.
Dimensions: Holotype, right valve (U. S. Nat. Mus. 371139), length, 80 mm.; height, 74 mm.; convexity, 17 mm. Paratype, left valve (U. S. Nat. Mus. 373076), length 100 mrn.; height, 94 mm.; convexity, 22 mm. Pecten eboreus watsonensis differs from P. eboreus eboreus Conrad in having 5 to 8 fewer, more widely spaced ribs. Type locality: Station 1/962, old road to Watsons Landing, about 2 miles north of Alum Bluff and about the same distance from Apalachicola River, Liberty County, Florida (sec. 1, T. 1 N., R. 8 W.). Base of bed about 80 feet above the river terrace. Occurrence: Florida; confined to the Ecphora zone at a number of localities. Virginia; zone l, of the Yorktown formation at Station 1/539, Schmidts Bluff (upper bed), right bank of the James river, Surry County, W. C. Mansfield, collector. Station 1/486 b, highest fossiliferous bed one-third mile below Lanexa, New Kent County, W. C. Mansfield collector. Station 12902, College Park, one mile west-southrwest of Williamsburg, on road to Jamestown. Julia Gardner, and others, collectors.» WENDELL CLAY MANSFIELD, 1936
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