Ammonoids from the Maastrichtian (Late Cretaceous) at El Zancudo, Nuevo Laredo, Tamaulipas, Mexico
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad Geológica Mexicana, A.C.
2013
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| _version_ | 1876443017236185088 |
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| author | Christina Ifrim |
| author_facet | Christina Ifrim |
| contents | Ammonoids from the Maastrichtian (Late Cretaceous) at El Zancudo, Nuevo Laredo, Tamaulipas, Mexico Christina Ifrim Wolfgang Stinnesbeck Ciencias de la Tierra Mexico Cretaceous Maastrichtian biostratigraphy paleobiogeography Abstract A small assemblage of Maastrichtian ammonoids was collected at El Zancudo, south of Nuevo Laredo, Mexico, on the border with Texas. They are preserved as goethitic internal moulds of the innermost whorls. Nine taxa are described in abbreviated form. Eight taxa have been recorded from northeastern Mexico before: Baculites ovatus , Brahmaites ( Anabrahmaites ) vishnu (Forbes, 1846), Diplomo - ceras cylindraceum , Fresvillia sp. indet., Gaudryceras kayei , Hypophylloceras ( Neophylloceras ) cf. H . ( N .) surya , Phyllopachyceras forbesianum , and Tetragonites superstes . The genus Discoscaphites was recorded and described for the first time in this region. The assemblage indicates an early late Maastrichtian age and is compared to other ammonoid assemblages from Texas and northeastern Mexico. It provides an important level marker for long-distance correlation into the deltaic sediments of northeastern Mexico, known as the Difunta Group. 2013 artículo científico 1405-3322 https://www.redalyc.org/articulo.oa?id=94348265015 en http://www.redalyc.org/revista.oa?id=943 Boletín de la Sociedad Geológica Mexicana application/pdf Sociedad Geológica Mexicana, A.C. Boletín de la Sociedad Geológica Mexicana (México) Num.1 Vol.65 |
| format | Artículo científico |
| id | redalyc_94348265015 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Sociedad Geológica Mexicana, A.C. |
| spellingShingle | Ammonoids from the Maastrichtian (Late Cretaceous) at El Zancudo, Nuevo Laredo, Tamaulipas, Mexico Christina Ifrim Ciencias de la Tierra Mexico Cretaceous Maastrichtian biostratigraphy paleobiogeography Ammonoids from the Maastrichtian (Late Cretaceous) at El Zancudo, Nuevo Laredo, Tamaulipas, Mexico Christina Ifrim Wolfgang Stinnesbeck Ciencias de la Tierra Mexico Cretaceous Maastrichtian biostratigraphy paleobiogeography Abstract A small assemblage of Maastrichtian ammonoids was collected at El Zancudo, south of Nuevo Laredo, Mexico, on the border with Texas. They are preserved as goethitic internal moulds of the innermost whorls. Nine taxa are described in abbreviated form. Eight taxa have been recorded from northeastern Mexico before: Baculites ovatus , Brahmaites ( Anabrahmaites ) vishnu (Forbes, 1846), Diplomo - ceras cylindraceum , Fresvillia sp. indet., Gaudryceras kayei , Hypophylloceras ( Neophylloceras ) cf. H . ( N .) surya , Phyllopachyceras forbesianum , and Tetragonites superstes . The genus Discoscaphites was recorded and described for the first time in this region. The assemblage indicates an early late Maastrichtian age and is compared to other ammonoid assemblages from Texas and northeastern Mexico. It provides an important level marker for long-distance correlation into the deltaic sediments of northeastern Mexico, known as the Difunta Group. 2013 artículo científico 1405-3322 https://www.redalyc.org/articulo.oa?id=94348265015 en http://www.redalyc.org/revista.oa?id=943 Boletín de la Sociedad Geológica Mexicana application/pdf Sociedad Geológica Mexicana, A.C. Boletín de la Sociedad Geológica Mexicana (México) Num.1 Vol.65 |
| title | Ammonoids from the Maastrichtian (Late Cretaceous) at El Zancudo, Nuevo Laredo, Tamaulipas, Mexico |
| topic | Ciencias de la Tierra Mexico Cretaceous Maastrichtian biostratigraphy paleobiogeography |
| url | https://www.redalyc.org/articulo.oa?id=94348265015 |