Transient presence of a teiid lizard in the European Eocene suggests transatlantic dispersal and rapid extinction - Sorbonne Université
Article Dans Une Revue Palaeobiodiversity and Palaeoenvironments Année : 2020

Transient presence of a teiid lizard in the European Eocene suggests transatlantic dispersal and rapid extinction

Résumé

Several teiid specimens (frontal, vertebra, maxillae) are described from the late Eocene of Europe (MP17, Phosphorites du Quercy). The results of phylogenetic analyses confirm that these European Eocene fossils belong to teiid lizards and more specifically to the subfamily Tupinambinae. So far, the Paleogene record of teiids is limited to South America and no occurrence of crown teiids is known in Europe. This disjunct distribution of teiids during the Eocene suggests transatlantic dispersal and this possibility is discussed. The presence of teiids in the European fossil record is brief (limited to standard level MP17). The circumstances that prevented the persistence of an invading clade in Europe are examined. Ecological (e.g. biotic interactions) and/or demographic (Allee effect) processes may have been involved.

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Paléontologie
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Dates et versions

hal-02550635 , version 1 (22-04-2020)

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Marc Louis Augé, Brizuela Santiago. Transient presence of a teiid lizard in the European Eocene suggests transatlantic dispersal and rapid extinction. Palaeobiodiversity and Palaeoenvironments, 2020, ⟨10.1007/s12549-019-00414-2⟩. ⟨hal-02550635⟩
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