Registro del teleósteo Gasteroclupea branisai en la Formación Yacoraite (Maastrichtiano-Daniano) en el área de Tres Cruces, Jujuy, Argentina. Tafonomía y correlación estratigráfica.

CARLOS A. CÓNSOLE GONELLA; ALBERTO L. CIONE Y FLORENCIO G. ACEÑOLAZA

Serie Correlación Geológica

Magna

Lugar: San Miguel de Tucumán; Año: 2009 p. 129 - 138

1514-4186

Several specimens of the peculiar coracoids of Gasteroclupea branisai (Teleostei, Clupeiformes) were found near  Tres Cruces, Jujuy. A taphofacies P1 of  disarticulated fishes wasdefined there. This taphofacies is evenly distributed as a pavement of less than 1 cm of thickness. It is a monotypic, monospecific, and unimodal concentration. There is no orientation. According to the present evidence, a prolongued time of exposition in the active taphonomic zone is inferred. This allowed the disarticulation and posterior selective transportation of the coracoid bones. A decantation deposition is hypothesized because bioclasts are not oriented on the surfaces. The acumulation is considered para-autoctone. Finally, the relevance of G. branisai as a stratigraphic correlation in Argentina and Bolivia is commented.