THE EXTINCT MAMMALIAN FAUNA 



OF 



DAKOTA AND NEBRASKA, 



INCLUDING AN ACCOUNT OF SOJIE ALLIED FORMS FROM OTHER LOCALITIES, 



TOGETHER WITH A 



SYIST OPSIS 



OF THE 



MAMMALIAN REMAINS OF NORTH AMERICA, 



ILLUSTEATED WITH 30 PLATES. 



BY JOSEPH LEIDY, M. D., LL. D., 



PROFESSOR OF ANATOMY IN THE UNIVERSITY OF PENNSYLVANIA; CURATOR OF THE ACADEMY OF NATURAL SCIENCES, PHILA- 

 DELPHIA; MEMBER or THE NAT, ACAD. OF SCIENCES; AMER. PHILOS. SOO., PHILADA. ; AMER. ACAD. ARTS AND SCI., AND 

 THE NAT. HIST. SOC, BOSTON ; LYO. NAT. HIST., NEW YORK; ACAD. OP SCIENCES, ST. LOOIS. ; IMP. SOC. OF NATURALISTS, 

 MOSCOW; IMP. LEOP. CAROL. ACAD. SCI., JENA; ROY. ZOOL.-BOT. SOC, VIENNA; ROY. ACAD. SOI., MUNICH ; ROY. BOHEM. SOC. 

 SCI., PRAGUE ; BIOLOGICAL SOC, PARIS ; GEOLOGICAL AND ZOOLOGICAL SOCIETIES, LONDON ; NAT. HIST. SOC, DUBLIN ; ETC. 



PRECEDED WITH AN INTRODUCTION 



ON THE 



GEOLOGY OF THE TERTIARY FORMATIONS OF 



DAKOTA AND NEBRASKA, 



ACCOMPANIED WITH A MAP. 

 BY F. V. HATDEK, M.D., 



PROFESSOR OF MINERALOGY AND GEOLOGY IN THE UNIVERSITY OP PENNSYLVANIA; U. S. GEOLOGIST ; MEMBER OF THE AMER. 

 PHILOS. SOC, AND ACAD. NAT. SCI., PHILADA.; NAT. HIST. SOC, BOSTON; LYC NAT. HIST., NEW YORK ; ACAD. SCI., ST. LOUIS; 

 ACAD. SOI., CHICAGO ; ESSEX INST. NAT. HIST., SALEM, MASS., ETC. 



PUILADELPniA, 1869. 



