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Boletín de la Sociedad Geológica Mexicana Volumen 69, núm. 2, 2017, p. 465 ‒ 477 |
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Upper Berriasian ammonites from the Taraises Formation of Cuencamé de Ceniceros section, Durango State, Northern Mexico
Celestina González-Arreola, Ricardo Barragán, Miguel Company, Josep A. Moreno-Bedmar, Rubén Cruz-Vázquez
Celestina González-Arreola
Ricardo Barragán
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Josep A. Moreno-Bedmar
Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Delegación Coyoacán, 04510, CDMX, Mexico.
Miguel Company
Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva s.n. 18002, Granada, Spain.
Rubén Cruz-Vázquez
Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios 1, Los Reyes Iztacala, Tlalnepantla de Baz, 54090, Estado de México, Mexico.
Abstract
We present evidence of late Berriasian sedimentation which records the presence of Spiticeras correardi, whose stratigraphic range is not well established. Located at Cuencamé de Ceniceros, Durango State, northern Mexico, a section belonging to the Taraises Formation is here presented to show our results. Furthermore, the sampled ammmonite assemblage —herein constituted by Fauriella cf. boissieri, Berriasella cf. calisto, Spiticeras correardi, and Kilianiceras praegratianopolitense— is attributed to the upper Berriasian standard Mediterranean ammonite Zone Fauriella boissieri. It is worth noting that B. cf. calisto has strong biostratigraphic significance, due to the fact that it is restricted to the upper part of the aforementioned Fauriella boissieri Zone (Tirnovella alpillensis and Thurmanniceras otopeta subzones).
Keywords: Ammonoids, upper Berriasian, Taraises Formation, Mexico, Fauriella boissieri Zone, marine transgression.
