新墨西哥州阿里巴县幽灵牧场附近达科他砂岩的塞诺曼尼亚无脊椎动物群落

Q4 Earth and Planetary Sciences

New Mexico Geology Pub Date : 2009-01-01 DOI:10.58799/nmg-v31n3.59

S. Lucas, L. Rinehart, S. Kelley

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引用次数: 1

摘要

在新墨西哥州Arriba县Ghost Ranch附近的Arroyo del Yeso白垩纪达科他砂岩中发现的一组无脊椎动物化石，是查马盆地达科他-曼科斯舌间序列中记录的第一个年龄诊断化石组合。化石归属于双壳类Legumen sp.、Exogyra sp.、Inoceramus arvanus Stephenson、I. prefragilis Stephenson和菊石类Acanthoceras amphibolum Morrow。它们指示了中塞诺曼尼亚时代的棘角石角砾岩带，并支持了含化石地层为达科他砂岩的帕格特砂岩舌的岩石地层鉴定。

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Cenomanian invertebrate assemblage from the Dakota Sandstone near Ghost Ranch, Rio Arriba County, New Mexico

A small assemblage of invertebrate fossils from the Cretaceous Dakota Sandstone at Arroyo del Yeso near Ghost Ranch, Rio Arriba County, New Mexico, is the first age-diagnostic fossil assemblage documented from the intertongued Dakota–Mancos succession in the Chama Basin. The fossils are assigned to the bivalves Legumen sp., Exogyra sp., Inoceramus arvanus Stephenson, and I. prefragilis Stephenson and the ammonite cf. Acanthoceras amphibolum Morrow. They indicate the Acanthoceras amphibolum Zone of middle Cenomanian age and support lithostratigraphic identification of the fossil-bearing strata as the Paguate Sandstone Tongue of the Dakota Sandstone.

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来源期刊

New Mexico Geology Earth and Planetary Sciences-Geology

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： New Mexico Geology is a quarterly, peer-reviewed journal available by subscription. Articles of original research are generally less than 10,000 words in length and pertain to the geology of New Mexico and neighboring states, primarily for an audience of professional geologists or those with an interest in the geologic story behind the landscape. The journal also publishes abstracts from regional meetings, theses, and dissertations (NM schools), descriptions of new publications, book reviews, and upcoming meetings. Research papers, short articles, and abstracts from selected back issues of New Mexico Geology are now available as free downloads in PDF format. Back issues are also available in hard copy for a nominal fee.