THE ARKANSAS COAL MEASURES. 203 



the western border of America do we find marine Triassic beds, 

 in Nevada, California, Idaho, and along the Coast region in 

 scattering places from Alaska to Peru. 



These deposits, with similar fauia, can be traced on the 

 other side of the Pacific, from New Zealand, Timor, New Cale- 

 donia, to Japan and Siberia. This sea stretches out on one side 

 over the Himalayas to the eastern Alps, forming what Neumayr" 

 calls the "central mediterranean sea." On the south side the 

 sea stretched up to Spitzbergen, but did not reach the Atlantic 

 region. The Triassic was a continental period for the greater 

 part of the present continents.^ 



After the Trias the outlines of the western ocean had changed 

 entirely, and no resemblance to the original boundaries can be 

 traced. James Perrin Smith. 



Stanford University, 

 California. 



' Denkschrift Wiener Akad., 1885, "Die Geographische Verbreitung der Juraform- 

 tion." 



"" SuESS: Antlitz der Erde, II., p. 147. 



