Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous)
International audience In the palaeogeographical context of the opening of the South Atlantic Ocean at the end of the Early Cretaceous, we document here the first microvertebrate fauna recorded from the Aptian deposits of Gadoufaoua, Niger. A systematic study of the fauna has resulted in a significa...
Published in: | Comptes Rendus Palevol |
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HAL CCSD
2022
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Online Access: | https://hal.sorbonne-universite.fr/hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689/document https://hal.sorbonne-universite.fr/hal-03924689/file/final.pdf https://doi.org/10.5852/cr-palevol2022v21a41 |
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ftmuseumnhn:oai:HAL:hal-03924689v1 2024-02-11T10:08:37+01:00 Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) La faune de microvertébrés de Gadoufaoua (Niger, Aptien, Crétacé inférieur) Pochat-Cottilloux, Yohan Allain, Ronan Lasseron, Maxime Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2022-12-05 https://hal.sorbonne-universite.fr/hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689/document https://hal.sorbonne-universite.fr/hal-03924689/file/final.pdf https://doi.org/10.5852/cr-palevol2022v21a41 en eng HAL CCSD Académie des sciences (Paris) info:eu-repo/semantics/altIdentifier/doi/10.5852/cr-palevol2022v21a41 hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689/document https://hal.sorbonne-universite.fr/hal-03924689/file/final.pdf doi:10.5852/cr-palevol2022v21a41 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1631-0683 EISSN: 1777-571X Comptes Rendus. Palevol https://hal.sorbonne-universite.fr/hal-03924689 Comptes Rendus. Palevol, 2022, 21 (41), pp.901-926. ⟨10.5852/cr-palevol2022v21a41⟩ Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2022 ftmuseumnhn https://doi.org/10.5852/cr-palevol2022v21a41 2024-01-24T17:24:41Z International audience In the palaeogeographical context of the opening of the South Atlantic Ocean at the end of the Early Cretaceous, we document here the first microvertebrate fauna recorded from the Aptian deposits of Gadoufaoua, Niger. A systematic study of the fauna has resulted in a significant expansion of the existing faunal list and increase our knowledge of the palaeobiodiversity of the Gadoufaoua fossil site. Some taxa were previously recorded (lungfishes, crocodilians, chelonians, etc.), but several new taxa are described here for the first time, including the first occurrence of a stem-boreosphenidan mammal in Africa for this time-interval. In addition, chondrichthyans, pterosaurs and lissamphibians are documented. The analysis of taxonomic diversity and preservation of the fossils confirms a floodplain depositional environment (more precisely channel-type), in a higher velocity flow regime than previously thought based on studies of the macrofauna. To confirm the depositional environment inferred by the state of preservation of the fossils, a preliminary comparison with the fauna of similar age from the Santana Formation (Brazil) has been undertaken. The hypothesis of a communication between Africa and South America during the Aptian, as had already been demonstrated based on studies of the macrofauna, is strengthened. Article in Journal/Newspaper South Atlantic Ocean Muséum National d'Histoire Naturelle (MNHM): HAL Comptes Rendus Palevol 41 |
institution |
Open Polar |
collection |
Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Pochat-Cottilloux, Yohan Allain, Ronan Lasseron, Maxime Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
topic_facet |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience In the palaeogeographical context of the opening of the South Atlantic Ocean at the end of the Early Cretaceous, we document here the first microvertebrate fauna recorded from the Aptian deposits of Gadoufaoua, Niger. A systematic study of the fauna has resulted in a significant expansion of the existing faunal list and increase our knowledge of the palaeobiodiversity of the Gadoufaoua fossil site. Some taxa were previously recorded (lungfishes, crocodilians, chelonians, etc.), but several new taxa are described here for the first time, including the first occurrence of a stem-boreosphenidan mammal in Africa for this time-interval. In addition, chondrichthyans, pterosaurs and lissamphibians are documented. The analysis of taxonomic diversity and preservation of the fossils confirms a floodplain depositional environment (more precisely channel-type), in a higher velocity flow regime than previously thought based on studies of the macrofauna. To confirm the depositional environment inferred by the state of preservation of the fossils, a preliminary comparison with the fauna of similar age from the Santana Formation (Brazil) has been undertaken. The hypothesis of a communication between Africa and South America during the Aptian, as had already been demonstrated based on studies of the macrofauna, is strengthened. |
author2 |
Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Pochat-Cottilloux, Yohan Allain, Ronan Lasseron, Maxime |
author_facet |
Pochat-Cottilloux, Yohan Allain, Ronan Lasseron, Maxime |
author_sort |
Pochat-Cottilloux, Yohan |
title |
Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
title_short |
Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
title_full |
Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
title_fullStr |
Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
title_full_unstemmed |
Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
title_sort |
microvertebrate fauna from gadoufaoua (niger, aptian, early cretaceous) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.sorbonne-universite.fr/hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689/document https://hal.sorbonne-universite.fr/hal-03924689/file/final.pdf https://doi.org/10.5852/cr-palevol2022v21a41 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
ISSN: 1631-0683 EISSN: 1777-571X Comptes Rendus. Palevol https://hal.sorbonne-universite.fr/hal-03924689 Comptes Rendus. Palevol, 2022, 21 (41), pp.901-926. ⟨10.5852/cr-palevol2022v21a41⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5852/cr-palevol2022v21a41 hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689 https://hal.sorbonne-universite.fr/hal-03924689/document https://hal.sorbonne-universite.fr/hal-03924689/file/final.pdf doi:10.5852/cr-palevol2022v21a41 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5852/cr-palevol2022v21a41 |
container_title |
Comptes Rendus Palevol |
container_issue |
41 |
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1790608051164676096 |