SMITHSONIAN EXPLORATION IN ALASKA IN 1907 IN 

 SEARQH OF PLEISTOCENE FOSSIL VERTE- 

 BRATES. SECOND EXPEDITION 



By CHARLES W. GILMORE 



TABLE OF CONTENTS 



Page 



I. Introduction 3 



II. Itinerary 5 



III. Occurrence of fossils 14 



1. Bonanza Creek localities 15 



2. Little Minook Creek, Junior 17 



3. Little Minook Creek 17 



4. Palisades 17 



5. Nowitna River 22 



6. Yukakakat River 23 



7. Klalishkakat River 23 



8. Discussion 24 



IV. Pleistocene fauna of Alaska 26 



1. Elephas primigenius 27 



2. Elephas columbi (?) 3° 



3. Mammut americanum 3° 



4. Equus 3 1 



5. Bison crassicomis 3 1 



6. Bison alleni 33 



7. Bison occidcntalis 33 



8. Bison priscus (?) 34 



9. Symbos tyrrelli 34 



10. Symbos cavifrons 35 



1 1. Ovibos maxim us 35 



12. Ovibos moschatus (?) 35 



13. Ovis 3b 



14. Alee 36 



1 5. Rangifer 36 



16. Ursus 37 



17. Castor 37 



18. Summary 37 



I. Introduction 



Since the discovery of extinct vertebrate remains in Alaska by 

 Otto von Kotzebue, in 1815. while on "A Voyage of Discovery into 

 the South Sea and Beering Straits," much interest has been manifest 

 regarding the occurrence and cause of extinction of the Pleistocene 



