1915.] von Huene, Reptiles in Cope Collection. : 507 
top-sandstone is about 12-15 m. thick. Above it are the upper red beds with 
a thickness of about 70m. The top of the Trias (above the latter) is formed 
by 50 m. of compact yellow sandstone, the “ Prieta sandstone’’; it is covered 
by 20 m. of gypsum, probably being the base of the Jurassic. Now the level 
where Case in 1911 found invertebrates and bones of C@lophysis is in the 
- Upper Triassic red beds, not less than 30 m. above the Poleo-top-sandstone, 
that is, about in the middle of the upper red beds. So their age must be 
supposed to be Upper Triassic. Baldwin’s discoveries demonstrate that 
Celophysis occurred together with Typothorax and Episcoposaurus. But 
other Phytosaurian bones are of another (more red) color and so must come 
from another horizon. It cannot be taken as certain that the Phytosaurian 
remains from the base of the Poleo-top-sandstone (= Shinarump horizon) 
also are of Upper Triassic age (Keuper) or whether they already belong to the 
middle Trias. ‘The whole Trias is called Dolores formation in southwestern 
Colorado, and the New Mexican Trias is the direct continuation of it. 
LITERATURE. 
1887. E.D. Cope. A Contribution to the History of the Vertebrata of the Trias 
of North America. Proceed. Amer. Phil. Soc., Vol. XXIV, p. 209-228. 
1904. S. W. Williston. Notice of some New Reptiles from the Upper Trias of 
Wyoming. Journ. of Geology, Vol. XII, p. 688-697. (Palzeorhinus. ) 
1906. F. v. Huene. Aussereuropdische Dinosaurier der Trias. Geol. u. Pal. 
Abhandl. 12, 2. 
1906. J. H. McGregor. The Phytosauria, with Especial Reference to Mystrio- 
suchus and Rhytidodon. Mem. Amer. Mus. Nat. Hist., Vol. IX, Pt. 2._ 
1907. J. H. Lees. The Skull of Paleorhinus. Journ. of Geology, Vol. XV, p. 
121-151. : 
1910. O. Jaekel. Ueber einen neuen Belodonten aus dem Buntsandstein von 
Bernburg. Sitz. ber. d. Ges. naturf. Freunde, Berlin, p. 197-229. 
1911. F.v. Huene. Kurze Mitteilung tiber Perm, Trias u. Jura in New Mexico. 
N. Jahrb. f. Min. etc. Beil. Bd. 32, p. 730-739, T. 32. . 
1912. §. W. Williston and E. C. Case. The Permo-Carboniferous of Northern 
New Mexico. Journ. of Geology, Vol. XX, p. 1-12. 
1913. M. G. Mehl. Angistorhinus, a New Genus of Phytosauria from the Trias 
of Wyoming. Journ. of Geology, Vol. XXI, p. 186-191. 
More literature: will be found in O. P. Hay: Bibliography and Catalogue of the 
Fossil Vertebrata of North America, 1902. (Reference to the genera and species.) 
