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GEOLOGICAL SURVEY

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112 NORTH AMERICAN MESOZOIC INVERTEBRATA. [BULL. 102.<br />

Cyrena Continued.<br />

(Corbicula) durkeei n. s. Meek.<br />

(1870.)<br />

Proc. Am. Philos. Soc., vol. 11, 1869-1870, p. 431-<br />

Phila., 1871. F. B. Meek.<br />

Formation: Tertiary [Cretaceous].<br />

Location: Wyoming.<br />

(Veloritina) durkeei (Meek) White.<br />

(1875.)<br />

Bep. Geogr. and Geol. Expl. and Sur. west of<br />

One Hundredth Meridian, vol. 4, pt. 1, pp. 207,<br />

208, pi. 21,figs. 13a, 6. Wash., 1875. C.A. White.<br />

Formation: Eocene ? [Cretaceous].<br />

Location: Plateau near the west crossing of the<br />

north fork of Virgin river, at Pace's canon, and<br />

at the north fork of Virgin river, Utah.<br />

(Veloritina) erecta, n. a. White.<br />

(1876.)<br />

Bep. Geol. UiutaMts., p. 117. Wash., 1876. C.<br />

A. White.<br />

Formation: Cretaceous.<br />

Location: Upper Kauab, Utah, and Hilliard station,<br />

Wyoming.<br />

n. s. Hill. (1889.)<br />

Geol. Sur. Texas, Bull. No. 4, p. 14. Austin, 1889.<br />

B. T. Hill.<br />

Formation: Cretaceous.<br />

Location: Barton's creek, west of Austin, Tex.<br />

Cyrtochilu n. subgen. Meek. (1876.)<br />

Bep. U. S. Geol. Sur. Terr., vol. 9, p. 392. Wash.,<br />

1876. F. B. Meek.<br />

Cytherea [Lam.] Morton. (1834.)<br />

Synop. Org. Bern. Cret. Gr. U.S., p.67. Phila.,<br />

1834. S. G. Morton.<br />

deweyi n. B. M. & H. (1856.)<br />

Proc. Acad. Nat. Sci., Phila., for 1856, p. 83.<br />

Phila., 1857. Meek & Haydeu.<br />

Formation: Cretaceous.<br />

Location: Moreau river, Nebraska [S. Dakota].<br />

excavata n. s. Morton. (1833.)<br />

Am. Jour. Sci., 1st ser., vol. 23, p. 292, pi. 5, fig.<br />

1. New Haven. 1833. S. G. Mortou.<br />

Formation: [Cretaceous].<br />

Location: New Jersey.<br />

excavata n. s. Morton. (1834.)<br />

Synop. Org. Bern. Cret. Gr. U. S., p. 67, pi. 5, lig.<br />

1. Phila., 1834. S. G. Mortou.<br />

Formation: Cretaceous.<br />

Location: Arnoytown, N. J.<br />

leonensis n. s. Conrad. (1857.)<br />

Bep. U. S. and Mex. Bound. Sur., vol. 1, pt. 2, pi.<br />

6, fig. 1. Wash., 1857. T. A. Conrad.<br />

Formation: Cretaceous.<br />

Location: Leon Springs, El Paso road [Texas].<br />

missouriana n. s. Morton. (1841.)<br />

Jour. Acad. Nat.- Sci., Phila., vol. 8, let ser., 1839-<br />

1842, p. 210, pi. 11, fig. 2. Phila., 1839-1842.<br />

S. G. Morton.<br />

Formation: Cretaceous.<br />

Location: Great bend of the Missouri river (lat.<br />

43° 4

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