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GEOLOGICAL SURVEY

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

Ammonites Continued.<br />

placenta (DeKay) Morton. (1830.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 6, Istser., 1827-<br />

1831, pp. 195-196, pi. 5, fig.. 4. Phila., 1827-<br />

1831. S. G. Mortou.<br />

Formation: Cretaceous.<br />

placenta (DeKay) Morton. (1834.)<br />

Synop. Org. '.Kern. Cret. Gr. U. S., w. 3(5-37, pi.<br />

2, figs. 1, 2. Phila., 1834. S. G. Morton.<br />

Formation : Cretaceous.<br />

Location: Deep cut of the Chesapeake and Delaware<br />

canal, New Jersey; southern bend of the<br />

Tennessee river.<br />

placenta (DeKay) Morton. (1841.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 8, 1st ser.,<br />

1839-1842, p. 210. 1'hila., 1839-1842. S. G.<br />

Mortou.<br />

Formation: Cretaceous.<br />

Location: Great Bend of the Missouri. (Lat. 43°<br />

40' N.)<br />

placenta (De Kay) Meek. (1859.)<br />

N. W. Terr.; Kcp. Prog. Assin. and Saskat. Expl.<br />

Exped., H.Y. Hind, p. 184, Toronto, 1859. F.<br />

B. Meek.<br />

Formation: Cretaceous.<br />

Location: South branch of the Saskatchewan,<br />

Canada.<br />

placenta (De Kay) Meek. (1870.)<br />

Proc. Am. Philos. Soc., vol. 11, 1869, 1870, p. 429.<br />

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

Formation: Cretaceous.<br />

Location : Fountain creek, Colorado city, Colorado.<br />

r placenta (De Kay) Gabb. (1876.)<br />

Proc. Acad. Nat. Sci., Phila., for 1870, p. 278.<br />

Phila., 1876. Wm. M. Gabb.<br />

Formation: Cretaceous.<br />

Location: Pataula creek, Georgia.<br />

placenta var. intercalaris, n. var.<br />

M. & H. (1860.)<br />

Proc. Acad. Nat. Sci., Phila., for 1860, p. 177.<br />

Phila., 18C1. Meek & Hayden.<br />

Formation: Cretaceous.<br />

Location: Cheyenne river, Nebraska.<br />

planicosta (Sow.) Ramirez. (1880.)<br />

An. Min. Foinouto Hep. Mex., tomo 3, p. 657.<br />

lam. 1, fig-. 7. Mexico, 1880. S. Ramiroz.<br />

Formation: Cretaceous [?]<br />

Location: Sierra Mojada, Mexico.<br />

pleurisepta n. s. Conrad. (1854.)<br />

Hep. U. S. & Mex. Bound. Sur., vol. 1, pt. 2, p.<br />

159, pi. 15, figs. la-c. Wash., 1857. T. A.<br />

Conrad.<br />

Formation: Cretaceous.<br />

Location: Jacun, ffmiles below Laredo.<br />

[This region is now known to be occupied by Eocene<br />

rocks, therefore the locality as above given by Mr.<br />

Conrad is evidently a mistake].<br />

ramosus (Meek) Gabb. (1864.)<br />

Geol. Sur. Cal., Paleont., vol. 1, p. 65, pi. 11, figs.<br />

12, 12o, pi. 12, fig. 126. Phila., 1864. W. M.<br />

Gabb.<br />

Formation: Cretaceous.<br />

Location: Cottonwood creek, Sbasta county, Cal.<br />

Ammonite s C on tinued.<br />

rainsaueri (Quenst.) Gabb. (1864.)<br />

Geol. Sur. Cal., Paleont., vol. 1, p. 27, pi. 3, figs.<br />

21, 21a. Phila., 1864. W. M. Gabb.<br />

Formation: Triassic.<br />

Location: Gifford's ranch, Plumas county, Cal.<br />

' remondii n. s. Gabb. (1864.)<br />

Geol. Sur. Cal., Paleont, vol. 1, pp. 60-67, pi. 12,<br />

figs. 14, 14a, 15. Phila., 1864. W. M. Gabb..<br />

Formation: Cretaceous.<br />

Location: North fork of Cottonwood creek,<br />

Shasta county, Cal. (Div. A).<br />

richardsoniin. s.Wliiteaves. (1876.)<br />

Geol. Sur. Can., Mcs. Foss., vol. 1, pt. 1, pp. 32,<br />

33, pi. 5. Montreal, 1876. J. F. Whitoaves.<br />

Formation: Cretaceous.<br />

Location: Queen Charlotte island.<br />

riorii n. 8. N. & G. (1840.)<br />

Bull. Roy. Acad. Sci., Bruxelles, tome 7, pt. 2,<br />

pp. 217-218, fig. 8. Bruxelles, 1840. Nyst &<br />

Galeotti.<br />

Formation: Jurassic.<br />

'Location: Tehuacan, Mexico.<br />

selwynianusn. s.Wliiteaves. (1879.)<br />

Geol. Sur. Can., Mes. Foss., vol. 1, pt. 2, pp.<br />

104-105, pi. 13, figs. 1, la. Montreal, 1879. J.<br />

F. Whiteaves.<br />

Formation: Cretaceous.<br />

Location: Sucia islands.<br />

serrato-carinatus n. s.Meek. (1870.)<br />

Proc. Am. Philos. Soc., vol. 11, 1869,1870, pp.<br />

429-430. Phila., 1871. F. B. Meek.<br />

Formation: Cretaceous.<br />

Location: Medicine Bow river.<br />

shumardin. s, Marcou. (1858.)<br />

Geol. N. Am., pp. 33-34, pi. 1, figs. l,la. Zurich,<br />

1858. Jules Marcou.<br />

Formation: Cretaceous.<br />

Location: Borders of Red river, near Preston,<br />

Texas.<br />

skidegateiisisn.s.WMteaves.(1876.)<br />

Geol. Sur. Can., Mes. Foss., vol. 1, pt. 1, pp. 34-37, pi.<br />

7, pi. 9, fig. 1, fig. 4, p. 34. Montreal, 1876, J.<br />

F. Wliiteaves.<br />

Formation: Cretaceous.<br />

Location: Queen Charlotte island.<br />

stoliczkanus n. s. Gabb. (1869.)<br />

Geol. Sur. Cal., Paleont., vol. 2, pp. 135, 136, pi.<br />

23, figs. 1C, o. Phila., 1809. W: M. Gabb.<br />

Formation: Cretaceous.<br />

Location: Cottonwood creek, Shasta county, Cal.<br />

stoliczkanus var. spiniferus n. var..<br />

Wblteaves. (1876.)<br />

Geol. Sur. Can., Mes. Foss., |vol. 1, pt. 1, pp. 24,<br />

27, pi. 3, fig. !3; pi. 4, figs. 1, 2, p. 24. Montreal,<br />

1870. .7. F. Whiteaves.<br />

Formation: Cretaceous.<br />

Location: Queen Charlotte island.

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