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THE ARKANSAS COAL MEASURES.
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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 fauna, can be traced on the other side of the Pacific, from New Zealand, Timor, New Caledonia, to Japan and Siberia. This sea stretches out on one side over the Himalayas to the eastern Alps, forming what Neumayr[1] 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.[2]

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.

  1. ↑ Denkschrift Wiener Akad., 1885, "Die Geographische Verbreitung der Juraformation."
  2. ↑ Suess: Antlitz der Erde, II., p. 147.
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