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IV.—Comparison of the Principal Forms of Dinosauria of Europe and America1

Published online by Cambridge University Press:  01 May 2009

O. C. Marsh
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Extract

The remains of Dinosaurian reptiles are very abundant in the Rocky Mountain region, especially in deposits of Jurassic age, and during the past ten years the author has made extensive collections of these fossils, as a basis for investigating the entire group. The results of this work will be included in several volumes, two of which are now well advanced towards completion, and will soon be published by the United States Geological Survey.

In the study of these reptiles, it was necessary to examine the European forms, and the author has now seen nearly every known specimen of importance. The object of the present paper is to give, in few words, some of the more obvious results of a comparison between these forms and those of America which he has investigated.

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 5 , May 1889 , pp. 204 - 210
Copyright
Copyright © Cambridge University Press 1889

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Footnotes

1

Abstract of a paper read before Section C, of the British Association for the Advancement of Science, at the Bath Meeting, Sept. 8th, 1888.

References

page 205 note 1 Diagrams showing typical ischia in these families and in the Cetiosauridæ were exhibited by the author when the paper was read.

page 205 note 2 Morris, 's Catalogue of British Fossils, p. 351, 1854.Google Scholar

page 206 note 1 Cardiodon dates from 1841 and Cetiosaurus also from 1841. See Introduction, Part 2, p. x, of Catalogue Fossil Reptilia, by Lydekker, R. (05, 1889).Google Scholar—Edit.

page 207 note 1 Quart. Journ. Geol. Soc. of London, vol. xxxvii. pl. xxviii. fig. 4, 1881Google Scholar.

page 207 note 2 Additional remains secured during the past season prove conclusively that some of these “horn-cores,” if not all, were attached to the skull in pairs, and one specimen found in place has since been described by the author as Ceratops montunus (Silliman's Journal, vol. xxxvi. p. 477, 12, 1888Google Scholar). It is from the Laramie formation of Montana. Others have been found in Colorado and in Wyoming. These are all much larger than the European specimens.