URI oai:uved.fr:3200.from-flying-reptile-to-marine-turtle-the-pterodactyl-from-the-chalk-of-lezennes-lez-lille From flying reptile to marine turtle: the « pterodactyl » from the Chalk of Lezennes-lez-Lille fre <p>In 1874, Charles Barrois reported a pterodactyl tibia, from the White Chalk (“Craie blanche”) which was then exploited in underground quarries at Lezennes (now in the suburbs of Lille). He referred it to Pterodactylus giganteus, a species from the English Chalk. Although no detailed description or illustration was provided, the occurrence of a pterodactyl in the Coniacian Lezennes Chalk was repeatedly mentioned in papers on local geology, as well as in lists of French pterosaurs.A re-examination of the specimen (Musée d'Histoire Naturelle de Lille, MGL 4158) shows that it is an elongate, more or less cylindrical non-pneumatised bone with poorly differentiated articular ends, which bears no resemblance to pterosaur tibia, nor to any other element of a pterosaur skeleton.Comparisons reveal that the so-called pterosaur tibia from Lezennes is in all likelihood a phalanx of a marine reptile. Among Late Cretaceous marine reptiles, plesiosaurs have proportionally much shorter phalanges. In mosasaurs, the phalanges are elongate but more hourglass-shaped than the specimen from Lezennes. The greatest resemblances seem to be with phalanges of marine turtles, which show a comparable degree of elongation and proximal and distal expansion. Incidentally, a turtle shell is known from the Lezennes Chalk.</p> analyse biodiversité biogéographie climatologie fossile paléobiologie paléoenvironnement paléontologie réchauffement climatique Paléontologie. Paléobotanique. Paléozoologie Climatologie LOMv1.0 collection LOMv1.0 1 LOMFRv1.0 image en mouvement LOMFRv1.0 son LOMFRv1.0 texte v1 LOMv1.0 final LOMv1.0 author BEGIN:VCARD VERSION:3.0 N:;;;; FN:Eric Buffetaut ORG:CNRS - Centre National de la Recherche Scientifique EMAIL;TYPE=INTERNET: END:VCARD 2005-02-08 URI oai:uved.fr:3200.from-flying-reptile-to-marine-turtle-the-pterodactyl-from-the-chalk-of-lezennes-lez-lille LOMv1.0 creator BEGIN:VCARD VERSION:3.0 N:;;;; FN: ORG:UVED URL:http://www.uved.fr EMAIL;TYPE=INTERNET: END:VCARD 2005-02-08 LOMv1.0 LOMFRv1.0 SupLOMFRv1.0 fre text/html https://webtv.univ-lille.fr/video/1830/from-flying-reptile-to-marine-turtle-the-%C2%AB-pterodactyl-%C2%BB-from-the-chalk-of-lezennes-lez-lille 0 LOMv1.0 lecture LOMv1.0 teacher LOMv1.0 learner LOMFRv1.0 licence 0 fre LOMv1.0 no LOMv1.0 yes Licence Creative Commons : Attribution, Pas d'utilisation commerciale, Partage dans les mêmes conditions LOMv1.0 discipline CDD 22e éd.