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The Cenomanian: stage of hindlimbed snakes

creator RAGE, Jean-Claude
ESCUILLIÉ, François
date 2005-03-03T09:41:26Z
2005-03-03T09:41:26Z
2003
description Three "snakes with legs" are known: Pachyrhachis problematicus, Haasiophis terrasanctus and Eupodophis descouensi. They have short posterior limbs but lack an anterior girdle and forelimbs. Moreover, Pachyophis woodwardi, Mesophis nopcsai and Simoliophis ssp. appear to be closely related to the hindlimbed taxa; consequently, although the presence of posterior limbs has not been demonstrated for these genera, it is presumed that they too were hindlimbed. All these snakes have been recovered only from the Cenomanian. Moreover, these six genera come from a restricted area (western Europe and northwesternmost Africa to the Middle East). This limited geographic range suggests that snakes might have originated in the "Mediterranean" part of the Tethys, but the restricted stratigraphical range remains unexplained.
format 1577863 bytes
application/pdf
identifier Carnets de Géologie / Notebooks on Geology, Maintenon, Article 2003/01 (CG2003_A01_JCR-FE_uk)
1634-0744
  http://hdl.handle.net/2042/293
language en
publisher Carnets de Géologie / Notebooks on Geology
subject Cenomanian
Cretaceous
Pachyostosis
Paleogeography
Reptilia
Hindlimbed Snakes
title The Cenomanian: stage of hindlimbed snakes
Le Cénomanien : étage des serpents bipèdes
type Article