Neithea boesi Kniker, 1919
KNIKER, H. T. 1919. Comanchean and Cretaceous Pectinidae of Texas. Bulletin of the University of Texas, 1817: 1-56, pls. 1-10 [p. 42, pl. 8, figs. 11-19]
1919 Neithea boesi Kniker, 1919
H. T. Kniker, 1919, plate 8.
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«Dimensions. —Height 14 mm.; length 10.5 mm.; breadth 5 mm.
Description. —Shell small, not much higher than long, ventral margin rounded. Ears subtriangular and conspicuous; hinge line short and straight. Right valve moderately globose, umbo broad and curved over the hinge line. The decoration consists of twenty-one subequal, subtriangular, radiating ribs which are narrow, very high, and scarcely flattened on top. Every fourth rib and the most anterior and the most posterior ribs are somewhat wider and higher than the others, but only so slightly that it is hardly noticeable. The ribs are separated by narrower depressions. In the anterior and posterior regions, the ribs are distinctly inclined towards the median line. On the umbo there are concentric folds instead of ribs. Below this, there are the radiating ribs but much interfered with by very strong lines of growth. On the remainder of the shell there are ordinary concentric lines which are also found on the areas and ears where they increase in strength as they approach the umbo. As in N. simondsi, a groove separates the anterior ear from the anterior area, while there is no such demarcation on the posterior side. No secondary ribs have been found on the areas. The left valve is missing. Affinities.—This species differs from N. simondsi n. sp. in its form, which is somewhat higher; in the number of ribs on the right valve, having two more, a prominent one being added anteriorly and posteriorly; in the shape of the ribs, which are subtriangular, slightly flattened on top, and considerably higher; and, inhaving concentric ridges, and not scales, on the umbo. N. boesi n. sp. is distinguished from N. altana n. sp. in being much higher; in having rather sharp, and not rectangular ribs; and in having three ribs between every two conspicuous ones. Number of specimens: 14. Occurrence: Both divisions of the Buda Limestone, Austin and Bound Rock, Texas.» FRANCIS WHITTEMORE CRAGIN, 1919
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