Author:
Fernández-López Sixto R.,Chong Diaz Guillermo B.
Abstract
A new upper Bajocian ammonite assemblage containing the morphoceratidsDimorphinites dimorphus(d'Orbigny) andVigoriceras defrancei(d'Orbigny) is reported from the circum-Pacific area. These ammonites were found at the top of the Torcazas Formation, in the Quebrada San Pedro area, Precordillera of northern Chile. Taphonomic, systematic, and paleobiogeographic data confirm these dimorphs were part of indigenous populations within the Tarapaca Basin, belonging to the same demic biospecies:Dimorphinites defrancei(d'Orbigny). The West Tethyan and East-Pacific distribution ofD. defranceicorroborates the availability of the migratory seaway, the so-called Hispanic Corridor, between the western Tethys and the eastern Pacific Ocean during the upper Bajocian Parkinsoni Zone. The discovery of this upper BajocianDimorphinitesassemblage provides a new biochronostratigraphic horizon in the Tarapaca Basin and an interoceanic correlation point for the latest Bajocian.
Publisher
Cambridge University Press (CUP)
Reference143 articles.
1. Roman F. 1930. Céphalopodes du Lias et du Jurassique moyen des régions d'Oudjda et du Grand Atlas (Maroc Oriental). Protectorat de la République Française au Maroc. Direction générale des travaux publics. Service des Mines et de la Carte Géologique. Notes et memoires, 22 p.
2. A lower Bathonian ammonite fauna from Erice (Western Sicily). Annales Universitatis Scientiarum Budapestinensis de Rolando Eotvos Nominatae;Galacz;Sectio Geologica,1999
3. Distinction between fill channels and abrasion furrows on ammonoid internal moulds
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