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I.—Footprints of Vertebrates in the Coal-Measures of Kansas

Published online by Cambridge University Press:  01 May 2009

O. C. Marsh
Affiliation:
Yale College New Haven, U.S.

Extract

The Museum of Yale University contains a small collection of footprints of much interest, which were found in 1873, in the Middle Coal-measures, near Osage, in South-eastern Kansas. A careful re-examination of these footprints has been recently made by the writer, and the main results are given in the present paper.

The impressions are well preserved in a calcareous shale, which separates readily into thin slabs, each representing a surface of the beach at the time the footprints were made upon it. A few shells in the shale are sufficient to prove that the formation is marine. Trails of annelids, and perhaps of other invertebrates, are seen on some of the surfaces.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1894

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