Notes on the Jurassic strata of North America

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Abstract
AT various places in Colorado, Wyoming, Dakota, Utah, Montana and other western Territories, there are frequent and large exposures of a formation which geologists and paleontologists have agreed in referring to the Jurassic period.It has received recognition as of that age in all the official reports which have noticed it; and from all members of the U. S. Geological survey who have written upon the subject.Professors Marcou, Newberry and Hayden and other eal'iy explorers recognized the formation as Jurassic, but it is to the late Mr. F. B. Meek that is due the credit of giving the first exposition of its claims to that recognition, based upon a publication of its invertebrate fauna.It is true that this fanna, even as it is at present known, is a meager one, but its character, together with the position of the formation in relation to those which underlie and overlie it, has been deemed sufficient, warrant for the opinion referred to.The formation in question is usually spoken of simply as Jurassic, but it has received local names by some authors, and some of its divisions have also received subordinate names.Some geologists have also grouped the whole formation together with a large series of underlying beds which have been generally considered as of Triassic age, under the compound name
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openalex_W2322438313 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors C. A. White
Journal american journal of science
Year 1885
DOI
10.2475/ajs.s3-29.171.228
URL
https://doi.org/10.2475/ajs.s3-29.171.228
Keywords Keywords not found

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