Case, Recent Disco veries of Permian Reptiles in Texas. 68 I 



its nearest relative in Omosaurus (Dacentrurus), remains of which 

 are known as far back as the Dogger (Bathonian) of England. That 

 Stegosaurus belongs to the predentate dinosaurs and to the ar- 

 mored Stegosauria is certain. It is not, however, in the direct 

 line of descent, but rather an over specialized side branch which 

 was apparently blotted out at the close of Morrison times 

 despite the fact that mpst of its associates, except the Sauropoda, 

 lived on. 



The spinescent character of Stegosaurus is of course indica- 

 tive of racial senility, but the modernizing of the flora which 

 began in America early in lower Cretaceous time and the pro- 

 bable restriction of the special food plants to which the feeble 

 mouth armament was adapted may well have been the immediate 

 cause of extinction. 



Herr Prof. Dr. E. C. Case (Ann Arbor, Mich.) hält seinen 

 angezeigten Vortrag: 



Recent Discoveries of Permian Reptiles in Texas. 



By E. C. Case (Ann Arbor, Mich.) 



This paper was a preliminary account of new animals dis- 

 covered in Texas. U. S. A. The complete descriptions will be 

 published by the Carnegie Institution of Washington. The paper 

 was presented by permission the Carnegie Institution. 



An account of a reconstruction of a nearly complete skeleton 

 of Diadectes phaseolinus C o p e and Eryops megacephalus C o p e. 

 Further account of new armored amphibians and new reptiles. 

 Several corrections of nomenclature. 



Herr Prof. Dr. S. von Apäthy (Kolosvär) hält seinen an- 

 gezeigten Vortrag: 



Fossile Ringelwürmer aus der Nähe von Kolosvär. 



Inhalt: Neue Species von Laodicites und Nereites. 



Das Manuskript dieses Vortrags ist dem Kongreßpräsidium 

 nicht eingesandt worden. 



Herr Ch. Gravier (Paris) hält seinen angekündigten 

 Vortrag : 



