Latest Early-early Middle Eocene deposits of Algeria (Glib Zegdou, HGL50), yield the richest and most diverse fauna of amphibians and squamate reptiles from the Palaeogene of Africa

Autor: Fateh Mebrouk, Mahammed Mahboubi, Rodolphe Tabuce, Jean-Claude Rage, Mustapha Bensalah, Laurent Marivaux, Mohammed Adaci
Přispěvatelé: Centre de Recherche en Paléontologie - Paris (CR2P), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Faculté des Sciences de la Nature et de la Vie et des Sciences de la Terre et de l'Univers (Tlemcen), Université Aboubekr Belkaid - University of Belkaïd Abou Bekr [Tlemcen], Université d'Oran 2 Mohamed Ben Ahmed [Oran], Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Université Mohammed Seddik Benyahia [Jijel] | University of Jijel (UMSBJ), ANR-08-JCJC-0017,PALASIAFRICA,Evolution de la Diversité Mammalienne d'Asie du Sud et d'Afrique durant le début du Cénozoïque : importance des facteurs environnementaux et biologiques(2008), Université d'Oran 2 Mohamed Ben Ahmed, École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, Université Mohamed Seddik Ben Yahia [Jijel]
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Palaeovertebrata
Palaeovertebrata, 2021, 44 (1-e1), pp.1-32. ⟨10.18563/pv.44.1.e1⟩
Palaeovertebrata, Association Palaeovertebrata., 2021, 44 (1-e1), pp.1-32. ⟨10.18563/pv.44.1.e1⟩
ISSN: 0031-0247
Popis: International audience; HGL50 is a latest Early-early Middle Eocene vertebrate-bearing locality located in Western Algeria. It has produced the richest and most diverse fauna of amphibians and squamate reptiles reported from the Palaeogene of Africa. Moreover, it is one of the rare faunas including amphibians and squamates known from the period of isolation of Africa. The assemblage comprises 17 to 20 taxa (one gymnophionan, one probable caudate, three to six anurans, seven 'lizards', and five snakes). Two new taxa were recovered: the anuran Rocekophryne ornata gen. et sp. nov. and the snake Afrotortrix draaensis gen. et sp. nov. The locality has also yielded the first confirmed anilioid snake, the first Palaeogene gymnophionan, and probably the first caudate from the Palaeogene (and possibly from the Tertiary) of Africa. The presence of a caudate at that time in Africa would be of particular interest; unfortunately, the available material does not permit a definitive identification. The fauna comprises Gondwanan and more specifically West Gondwanan vicariants, probably autochthonous groups and a Eurasian immigrant (assuming that the identification of the caudate is accurate). The fauna from HGL50 is clearly distinguished from the few other Eocene assemblages of Africa. However, if this results largely from differences in geological ages, geographic positions of the localities and mainly differences in environments took a part in the composition of the faunas.
Databáze: OpenAIRE
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