UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 10, No. 5, pp. 63-73, 5 text-figures Issued November 6, 1916 



NOTES ON THE MARINE TRIASSIC REPTILE 

 FAUNA OF SPITZ BERGEN 



BY 



GAEL WIMAN 



CONTENTS 



Introduction 



Occurrence 



Mixosaurus and Phalarodon 



Pessosaurus and Shastasaurus 



Pessopteryx and Omphalosaurus 



Faunal Relationships 



Literature 



INTRODUCTION 



It gives me great pleasure to comply with a request from two 

 American colleagues to make a comparison between the marine Triassic 

 reptiles of Spitzbergen and Europe on the one hand and western North 

 America on the other, and I do this so much the more because on both 

 sides a good deal has come to light since I treated the Triassic ich- 

 thyosaurs from Spitsbergen in 1910.-"* Of reptiles, however, very 

 little material has been added from the Trias of Spitzbergen since the 

 saurian expedition in 1909. The expeditions of 1912 and 1913 have, 

 like the one that is now in progress, been directed chiefly to the some- 

 what older fish horizon with stegocephalians and fishes. 



OCCURRENCE 



Not very long ago the iehthyosaurians from the Trias belonged to 

 the greatest rarities ; now, on the contrary, they seem to be about 



* For literature references see bibliography forming the last division of this 

 paper. 



Owing to uncertainty of transport timing the past year it has not been 

 jjossible for the author to read the proof of this paper. — Editor. 



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