BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 25, pp. 381-402 September 15, 1914 



PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



EVIDENCE OF THE PALEOCENE VERTEBRATE FAUNA ON 

 THE CRE^PAOEOUS-TERTIARY PROBLEM ^ 



BY W. D. MATTHEW 



{Presented before the Paleontological Society January 1, IQlJf) 



CONTENTS 



Page 



Use of the term Paleocene 381 



Characters of the Paleocene vertebrate faunas 382 



List of typical Paleocene vertebrate faunas 383 



Comparison with Lance and Belly River faunas 386 



Comparison with Wasatch (Lower Eocene) faunas 388 



Characters of the Paskapoo fauna 388 



Characters of Fort Union fauna, with list. 389 



Interpretation of the vertebrate faunas 390 



Relations of the Judith River fauna 393 



Correlation with the European succession 394 



General discussion 394 



Thanetian ( Cernaysian ) equivalent to Torrejon 395 



List of Cernaysian fauna 395 



Sparnacian and Ypresian equivalent to Wasatch , 39G 



The Puerco has no certain equivalent in Europe 39G 



The Lance is equally difficult to correlate 396 



Faunal migrations and diastrophism 397 



Conclusions 399 



Appendix A. Alleged occurrences of dinosaurs in Tertiary formations .... 400 

 Appendix B. Unconformity between the Laramie and the Lance 401 



Use of the Term Paleocene 



The character of the Paleocene fauna, its relations to the preceding 

 and following faunae, and its European correlations are an important part 

 of the evidence on this problem. 



1 Manuscript received by the Secretary of the Geological Society June 14, 1914. 

 Contribution to the symposium held by the Paleontological Society at the Princeton 

 meeting December 31, 1913, and January 1, 1914. 



XXVII— Bull. Geol. Soc. Am., Vol. 25, 1913 (381) 



