Articles | Volume 41, issue 1
https://doi.org/10.5194/jm-41-75-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-41-75-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Apr 2022
Research article |
| 26 Apr 2022
| 26 Apr 2022
Lower Jurassic calcareous nannofossil taxonomy revisited according to the Neuquén Basin (Argentina) record
Micaela Chaumeil Rodríguez
CORRESPONDING AUTHOR
CONICET – División Científica de Geología, Museo de
La Plata, Paseo del Bosque s/n, La Plata, 1900, Argentina
Univ Lyon, UCBL, ENSL, UJM, CNRS, LGL-TPE, 69622, Villeurbanne,
69100, France
Emanuela Mattioli
Univ Lyon, UCBL, ENSL, UJM, CNRS, LGL-TPE, 69622, Villeurbanne,
69100, France
IUF, Institut Universitaire de France, Paris, France
Juan Pablo Pérez Panera
CONICET – División Científica de Geología, Museo de
La Plata, Paseo del Bosque s/n, La Plata, 1900, Argentina
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Using biometric analysis, a new species, Similiscutum giganteum, has been described. Given its distinctive morphology and its stratigraphic range restricted to upper Pliensbachian and Toarcian, the potential stratigraphic use of this new species has to be explored. A method for biometry is also described in detail. This paper proves the value of biometric analysis in taxonomic description.
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Short summary
We present a deep systematic and taxonomic revision of the Early Jurassic calcareous nannofossils from the Neuquén Basin. The study focuses on characterizing the assemblages and identifying bioevents. The Pliensbachian associations from the Los Molles Formation are ilustrated for the first time, along with new biostratigraphic data from the area. Similarities found with locaties from the proto-Atlantic region suggest a connection between the Pacific and Tethys oceans during the Early Jurassic.
We present a deep systematic and taxonomic revision of the Early Jurassic calcareous...
