582 THE AGE OF MAMMALS 



'09 The Stratigi-aphic Relations and Pakeontology of the " Hell Creek 

 Beds," " Ceratops Beds " and Equivalents, and their Eeference to 

 the Fort Union Formation. 

 Proc. Wash. Acad. ScL, Vol. XI, No. 3, 1909, pp. 179-238. 



Knowlton, F. H., and Stanton, T. W. 



'97 Stratigraphy and Palaeontology of the Laramie and Related Forma- 

 tions in Wyoming. 

 Bull. Geol. Soc. Amer:, Vol. VIII, pp. 127-156, 1897. 



Knowlton, F. H., and Turner, H. W., and Lucas, F. A. 



'00 The Esmaralda Formation, a Fresh- Water Lake Deposit in Nevada, 

 by H. W. Turner, with a Description of the Fossil Plants, by F. H. 

 Knowlton, and of a Fossil Fish, by F. A. Lucas. 

 U.S. Geol. Surv., Extr. XXI, A7m. Rept., pp. 210-220, 1899-1900. 



Kobelt, W. 

 "97-"98 Studien zur Zoogeographie. 2 vols., Wiesbaden, 1897-1898. 



'02 Die Verbreitung der Tierwelt. Gemassigte Zone. Leipzig, 1902. 



Kowalewsky, W. 



'73 JNIonographie der Gattung Anthracotherium Cuv. und Versuch einer 

 natiirlichen Classification der fossilen Hufthiere. 

 Paloiontographica, n.s. II, 3 (XXII), 1873-1874. 



Lambe, L. M. 



'08 The Vertebrata of the Oligocene of the Cypress Hills, Saskatchewan. 

 Canada Dept. Mines, Contrib. to Canad. Palwont., Vol. Ill, Ottawa, 

 1908, pp. 1-65. 



Lamothe, General de 



"07 Le Climat de I'Afrique du Nord pendant le Pliocene superieur et 

 le Pleistocene. 



Congr. Geol. Intern., Sess. X, Mexico, Vol. I, 1906, pp. 341-347 

 (publ. 1907). 



de Lapparent, A. 



'85 Traite de Ge'ologie. Paris, 1906. 



Lartet, E. 



'58 Sur les Migrations Anciennes des Mammiferes de I'Epoque Actuelle. 

 C.R. Acad. Sci. Paris, Vol. 46, 1858. 



Leche, W. 



'95-'07 Zur Entwicklungsgeschichte des Zahnsystems der Saugetiere. 

 Cluui's Zoologica, Stuttgart, 1895-1907. 



Leidy, J. 



'52 The Ancient Fauna of Nebraska or a Description of Remains of 

 Extinct Mammalia and Chelonia. 

 Smithson. Contrib. to Knoivledge, Vol. VI, 1852. 



