Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous)
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 exi...
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Online Access: | https://doi.org/10.5852/cr-palevol2022v21a41 |
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ftzenodo:oai:zenodo.org:7398643 2024-09-15T18:36:27+00:00 Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) Yohan POCHAT-COTTILLOUX Ronan ALLAIN Maxime LASSERON 2022-12-05 https://doi.org/10.5852/cr-palevol2022v21a41 eng eng Zenodo https://doi.org/10.5852/cr-palevol2022v21a41 oai:zenodo.org:7398643 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Comptes Rendus Palevol, 21(41), 901-926, (2022-12-05) Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography info:eu-repo/semantics/article 2022 ftzenodo https://doi.org/10.5852/cr-palevol2022v21a41 2024-07-25T16:59:22Z 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 Zenodo Comptes Rendus Palevol 41 |
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op_collection_id |
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language |
English |
topic |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography |
spellingShingle |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography Yohan POCHAT-COTTILLOUX Ronan ALLAIN Maxime LASSERON Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous) |
topic_facet |
Microvertebrates Cretaceous Niger Gadoufaoua Africa palaeobiogeography |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Yohan POCHAT-COTTILLOUX Ronan ALLAIN Maxime LASSERON |
author_facet |
Yohan POCHAT-COTTILLOUX Ronan ALLAIN Maxime LASSERON |
author_sort |
Yohan POCHAT-COTTILLOUX |
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 |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.5852/cr-palevol2022v21a41 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Comptes Rendus Palevol, 21(41), 901-926, (2022-12-05) |
op_relation |
https://doi.org/10.5852/cr-palevol2022v21a41 oai:zenodo.org:7398643 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5852/cr-palevol2022v21a41 |
container_title |
Comptes Rendus Palevol |
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41 |
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1810480107419074560 |