Revieivs — Osborn^s Tertiary Mammal Horizons. 417 



a third trial sheet was issued in connection with the first of the 

 two addresses above quoted. We here transcribe the " Preliminary 

 Table of European and American Tertiary Horizons," being an 

 abbreviation of the third trial sheet. 



" In all the levels above the Stampien the parallels are 

 imperfectly established." " Our Pliocene record, as compai'ed 

 with the magnificent Pliocene of Europe, is extremely meagre, 

 and our Miocene succession, rich as it is, is not as fully understood 

 as the Miocene of France." 



In Part I the parallels between Tertiary horizons are discussed. 



The Burdigalien, Lower Miocene, calls for a few remarks. Gaudry 

 was the first to place the Calcaire de Montahuzard and the Sables 

 de VOrUanais in a lower level than Sansan, ' Anthracotherium' not 

 being found and the ruminants being more evolved in the Sansan 

 deposit. The Proboscidea and Monkeys appear for the first time, no 

 trace of them being found in the Upper Oligocene (Saint-Gerand-le- 

 Puy, etc.). 



Owing to the extreme scarcity of the Burdigalien fossils in other 

 than a few French museums, most pala30ntologists were prevented 

 from forming an opinion of their own ; the Burdigalien for these 

 reasons was omitted from the "Table of Contemporary Deposits, 

 with their Characteristic Genera of Mammalia," published in the 

 Geological Magazine (1899, p. Gl). The general tendency has been 

 to leave the Sables de VOrleanais in the same horizon as Sansan, 

 La Grive, Steinheim, with which they were and still are supposed 

 to share such characteristic Tortonien species _ as Dinothenim 

 bavaricim, Mastodon angustidens, and Anchitherium aurelianense. 

 The more recent researches of Deperet, the results of which are 

 endorsed by Osborn, have confirmed Gaudry's views. Some 

 vertebrates from the Burdigalien of Moghara (Lower Egypt) 

 have of late been described by Andrews. 



DECADE IV. — VOL. VII. — NO. IX. 27 



