Geology . r the Ameri-can and Asian faunas. The alliance of these foims is sufficientlyclose to indicate that before the close of the earlier Triassic epochmigratory connections had been established between India and west-ern America. It is significant in this connection that a fauna closelyrelated to this ceratite fauna of India occupied the Pacific borderin the vicinity of Vladivostok. In this are found a few species iden- 1 James Perrin Smith, Comparative Study of Pahrontogeny and Phylogeny,Jour, of Geol., Vol. V, 1897, p. 517. THE TRIASSIC PERIOD. 53 tical with those of India and others cl
Geology . r the Ameri-can and Asian faunas. The alliance of these foims is sufficientlyclose to indicate that before the close of the earlier Triassic epochmigratory connections had been established between India and west-ern America. It is significant in this connection that a fauna closelyrelated to this ceratite fauna of India occupied the Pacific borderin the vicinity of Vladivostok. In this are found a few species iden- 1 James Perrin Smith, Comparative Study of Pahrontogeny and Phylogeny,Jour, of Geol., Vol. V, 1897, p. 517. THE TRIASSIC PERIOD. 53 tical with those of India and others closely related to them. Theseprobably belong to a little later stage than their Indian relatives andsuggest that the sea-border tract of the North Pacific was the routeof migration from India to western America. Somewhat later in the early Trias there appeared in the Siberianregion (Olenek River) a fauna having some of the same genera as theIndian, but not the particular species common to the Indian and the.
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