Boletín de la Sociedad Geológica Mexicana

Volumen 68, núm. 2, 2016, p. 305-311

 

Salinites grossicostatum (Imlay, 1939) and S. finicostatum sp. nov. from the latest Tithonian (Late Jurassic) of northeastern Mexico

Patrick Zell1,*, Wolfgang Stinnesbeck1

1 Institut für Geowissenschaften, Universität Heidelberg, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany.

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Abstract

Based on our taxonomic revision of the ammonite Salinites grossicostatum from the uppermost Tithonian of the La Caja Formation at Puerto Piñones, in the state of Coahuila, northeastern Mexico, we suggest that some specimens described from other Tithonian sites of Cuba and Mexico assigned to S. grossicostatum belong to a new species, here presented as S. finicostatum . Salinites grossicostatum and S. finicostatum sp. nov. are endemic to the ancient Gulf of Mexico and are restricted to outer continental shelf environments.

Keywords: Salinites grossicostatum , S. finicostatum , Tithonian, La Caja Formation, northeastern Mexico.


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