Amphibians and squamate reptiles from the late early Miocene (MN 4) of Béon 1 (Montréal-du-Gers, southwestern France) Author Rage, Jean-Claude UMR CNRS 5143, Département Histoire de la Terre, Muséum national d’Histoire naturelle, case postale 38, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) jcrage @ mnhn. fr jcrage@mnhn.fr Author Bailon, Salvador UMR CNRS 6569, Laboratoire départemental de Préhistoire du Lazaret, 33 bis boulevard Franck Pilatte, F- 06300 Nice (France) sbailon @ lazaret. unice. fr text Geodiversitas 2005 27 3 413 441 journal article 10.5281/zenodo.5378363 1638-9395 5378363 SCLEROGLOSSA incertae sedis AMPHISBAENIA Gray, 1844 Indeterminate amphisbaenian MATERIAL EXAMINED. — 4 trunk vertebrae (Béon 2004 LT 57). COMMENTS The vertebrae show features that are found in both the Amphisbaenidae and Blanidae (the latter family has been erected recently by Kearney 2003 ): vertebrae markedly depressed; neural spine faint or absent; zygosphene-zygantrum system absent; paradiapophyses globular; ventral surface of centrum only slightly convex in crosssection, without any trace of ridge. Vertebrae do not permit further identification.