216 G. E. Wieland — On Marine Turtles. 



of immediately associated forms of more than ordinary interest. 

 In the first place, I have obtained in this same horizon well pre- 

 served toe bones of a Dinosaurian nearly of the form and nearly 

 as large as those of Claosanrus annectens, which I shall figure 

 later as Claosaurus (?) affinis sp. no v. And presumably from 

 the same drift from a not far distant shore, I secured an exqui- 

 sitely preserved new species of Palm stem, later to be described 

 as Palrnoxylon cheyennense. 



Secondly, associated with these land forms are numerous 

 Mosasaurs, a shark (a broad-toothed Lamna), a fish allied to 

 2>eryx, a Saurocephalodont, and the following invertebrates, — 

 Nautilus De Kayi (very abundant in the matrix of one of the 

 large turtle skeletons), Placenticeras placenta, /Scaphites nodosus, 

 Emperoceras Beecheri Hyatt, Baculites ovatus and compressus 

 Say, Gallista Deweyi M. and H., Inoceramus, etc., etc. — I hope 

 again to call attention to this interesting assemblage, for it is not 

 often that we are able to find in unquestioned association such 

 well marked land and marine forms. 



Yale University Museum, New Haven, Conn. 



References. 



1. Capellini, G. : II Chelonio Veronese Protosphargis Vero- 



nensis. (36 pp., 7 pis.) Reale Accad. dei Lincei. 

 Rome, 1884. 



2. Le Piastre Marginale della Protosphargis Vero- 



nensis. R. Accad. della Scienze dell' Institute di 

 Bologna, 1898. 



3. Cope, E. D. : Second Contribution to the History of the 



Cotylosauria. Proceedings of the American Philo- 

 sophical Society, vol. xxxv, No. 151, May, 1896. 



4. Dollo, L. : Sur l'origine de la Tortue Luth (Dermochelys 



coriacece.) Bulletin Soc. Roy. des Sciences Med. et 

 Nat. de Bruxelles, Seance 4, i'evrier, 1901. 



5. Fraas, E. : Proganochelys Quenstedtii Baur (Psammochelys 



Keuperina Qu.) Ein Neuer Fund der Keuper- 

 schildkrote aus dem Stubensandstein. Jahreshefte 

 des Vereins fur Naturkunde in Wurttemberg, Stutt- 

 gart, 1899. 



6. Wieland, G. R. : Archelon ischyros, a new gigantic Crypto- 



diran Testudinate from the Fort Pierre Cretaceous 

 of South Dakota. This Journal, December, 1896. 



7. The Protostegan Plastron. Ibid , January, 1898. 



8. The Skull, Pelvis, and probable Relationships of 



the Huge Turtles of the Genus Archelon from the 

 Fort Pierre Cretaceous of South Dakota. Ibid., 

 April, 1900. 



9. Notes on the Cretaceous Turtles, Toxochelys and 



Archelon, with a classification of the Marine Testu- 

 dinata. Ibid., August, 1902. 



