168 TEN YEARS^ PROGRESS IN VERTEBRATE PALEONTOLOGY 



Among the interesting features in connection with the American 

 Pleistocene is the work now going on in the famous La Brea asphaltum 

 deposits of southern California (Merriam, 1908; Gilbert, 1910). Much 

 exploration and work have also been done by Merriam, Mercer, Sinclair, 

 Furlong, and others in caves and other deposits on the Pacific coast. The 

 bone deposits of the Conard fissure in northern Arkansas have been 

 studied by Mr. Barnum Brown (1908). A preliminary paper was con- 

 tributed by Dr. W. J. Holland on the collection from the Frankstown 

 Cave in Pennsylvania (1908). The Aftonian deposit of mammalian 

 remains in Iowa is a recent discovery of much importance geologically 

 (Calvin, 1909). Much work has recently been done in Alaska by the 

 National (Gilmore, 1908) and American Museums (Quackenbush, 1909). 

 A great number of other discoveries of comparatively recent date have 

 been made by other institutions. This material, collectively, has fur- 

 nished a new and powerful impetus in the extremely interesting and 

 intricate study of the Pleistocene. The testimonies, though sometimes 

 of fragmentary character, furnish ideas of great geographic range and 

 zoologic diversity, not only of the Artiodactyl^, but of the mammalia as 

 a whole. Especially important is the manner in which the mammalian 

 remains have assisted, as time-markers, in recent studies of glacial and 

 interglacial periods (Calvin, 1909, page 137). Eecent discoveries of 

 fossil marumalian remains in Cuba and in Mexico give great promise and 

 may direct some energies into Central and South America in the near 

 future. But the more important fields in connection with Artiodactyla, 

 as well as mammalia in general, are undoubtedly in Asia, especially the 

 northern parts, and in Africa. 



Finally, we come to the capstone of the monument of the ten years' 

 progress, Osborn's "Age of Mammals," a masterly treatise, giving most 

 useful information in connection with mammalian paleontology, quite 

 indispensable to the worker in that field. 



Principal Literature icith Reference to Netc Families, Genera, Species, and 

 Subspecies of Fossil Artiodactyla of the Past Ten Years 



De-Alessandri, Giulio : 

 1903. "Sopra alcuni avanzi di Cervidi pliocenici del Piemonte." AttI Acad- 

 emia Scieiize. Torino, vol. xxxviii, 1903, pages 843-855. [Cervus 

 pliotarandoides n. sp.] 

 Andrews, Charles W. : 



1899. "Fossil mammalia from Egypt." Geological Magazine, n. s. (4), vol. 

 vi, 1899, pages 48-484. [Brachyodus africanus n. sp.] Also vol. 1, 

 1904. [Page 100, Geniohyus mints n. g. page 162, G. fayumensis 

 n. sp. ; page 212, G. mayor n. sp.] 



