Vol. 1 I, No. 5, pp. 437a-437e, 438-585, 253 text figures August 30, 1919 



TERTIARY MAMMALIAN FAUNAS OF THE 



UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



MOHAVE DESERT 



BY 



JOHN C. MEREIAM 



CONTENTS 



PAGE 



Introduction 437c 



Geographic situation and existing physical conditions in the Mohave area 438 



Existing life of the Mohave area 439 



Occurrence and nomenclature of the mammal beds 440 



Geologic relations of the Tertiary formations 444 



Palaeontologic materials available 449 



Barstow fauna 450 



Relation of the Barstow fauna to its environment 450 



Stage of evolution and relationships of the Barstow fauna 451 



Relation to Tertiary faunas of the Great Basin region 451 



Relation to Tertiary faunas of America outside the Great Basin region ... 453 



Description of fauna 455 



Testudinata 455 



Testudo mohavense, n. sp 456 



Aves 462 



Carnivora 462 



Canid (Canis?), small sp 462 



Tephrocyon, near temerarius (Liedy) 462 



Aelurodon, near wheelerianus Cope 464 



Aelurodon, Dinocyon, or Amphicyon, sp 466 



Canid skeletal elements, indet 466 



Machaerodont, sp. A 468 



Machaerodont, sp. B 468 



Machaerodont, sp. C 468 



Machaerodont, indet 469 



Felid?, indet 469 



Pseudaelurus, sp 469 



Rodentia 471 



Lepus?, sp 471 



Proboscidea 471 



Tetrabelodon?, sp 471 



