CATALOGUE AND BIBLIOGRAPHY OF THE NORTH AMERICAN 
PLESIOSAURIA. 
BLE SIGOSAURITS: 
Conybeare, Trans. Geol. Soc. Lond. v, 560, 1821. 
BREVIFEMUR Cope, Cret. Vertebr. 256, 1875.—Greensand No. 5, New 
Jersey. 
Cimoliasaurus magnus (Leidy) Cope, Ext. Batrach. 1869, 43, 
Ho 13-15. 
*GuLO Cope, Proc: Acad. Nat. Sci. Phil. 1872,.228; Cret. Vert. 1875, 
256.—Fort Pierre Cretaceous, Kansas (evrore, Niobrara). 
*MUDGEI Cragin, Fifth Pub. Colorado Col. Sci. Soc. 69, ff. 1-3.— 
Comanche Cretaceous, Kansas. 
*GouLpil Williston, Kansas Univ. Quart. vi, 57, 1897.—Comanche 
Cretaceous, Kansas. 
SHIRLEYENSIS Knight, Amer. Journ. Sci. 1Ig00, p. 115.—Jurassic, 
Wyoming. 
All of the foregoing species were based upon fragmentary mate- 
rial, and it is improbable that any belong in the genus P/esosaurus. 
CIMOLIASAURUS. 
Leidy, Proc. Acad. Nat. Sci. Phil. 1851, 325 (1852). 
MAGNUS Leidy, l. c.; ibid. 1854, 72, pl. u, ff. 4-6; Cretac. Rept. 1865, 
Ba pie Vy MT 3=10,- Pie Wi; Cope, Ext) Datrachiray. etc. 1869, 
42; Lydekker, Cat. Fos. Rept. Brit. Mus. 11, 211.—Creta- 
ceous No. 5, New Jersey. 
PLANIOR Leidy, Proc. Acad. Nat. Sci. Phil. 1870, 22.—Cretaceous, 
New Jersey (see also Discosaurus). 
*snowll Williston, Science, xvi, 262; Trans. Kansas Acad. Sci. xu, 
174, 1890; Cope, Proc. Amer. Phil. Soc. xxxii, 109.— Nio- 
brara Cretaceous, Kansas. 
LARAMIENSIS Knight, Amer. Jour. Sci. x, 117, 119.—Jurassic, Wyo- 
ming. 
7 
