CONTENTS 



Pages 



Medina and Cataract Formations of the Siluric of New York and 



Ontario. By Charles Schuchert 277-320 



Close of the Cretaceous and Opening of Eocene Time in North 



America. By Henry Fairfield Osbom 321-324 



Cretaceous -Tertiary Boundary in the Rocky Mountain Region. By 



F. H. Knowlton 325-340 



Boundary Between Cretaceous and Tertiary in North America as 

 Indicated by Stratigraphy and Invertebrate Faunas. By Timothy 

 W.Stanton '341-354 



Cretaceous-Eocene Correlation in New Mexico, Wyoming, Montana, 



Alberta. By Barnum Brown 355-380 



Evidence of the Paleocene Vertebrate Fauna on the Cretaceous- 

 Tertiary Problem. By W. D. Matthew 381-402 



Recent Results in the Phylogeny of the Titanotheres. By Henry 



Fairfield Osbom 403-405 



New Methods of Restoring Eotitanops and Brontotherium. By 



Henry Fairfield Osborn 406 



Restoration of the World Series of Elephants and Mastodons. By 



Henry Fairfield Osborn - - - 407-410 



Rectigradations and Allometrons in Relation to the Conceptions of 

 the "Mutations of Waagen," of Species, Genera, and Phyla. 

 By Henry Fairfield Osborn 411-416 



Geology of the Uinta Formation. By Earl Douglass - - - - 41 7-420 



Cambrian and Related Ordovician Brachiopoda — a Study of Their 



Inclosing Sediments. By Lancaster D. Burling - _ - - 421-434 



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