Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J / K boundary Author Allain, Ronan Author Vullo, Romain Author Rozada, Lee Author Anquetin, Jérémy Author Bourgeais, Renaud Author Goedert, Jean Author Lasseron, Maxime Author Martin, Jeremy E. Author Pérez-García, Adán Author Fabrègues, Claire Peyre De Author Royo-Torres, Rafael Author Augier, Dominique Author Bailly, Gilles text Geodiversitas 2022 2022-07-21 44 25 683 752 journal article 10.5252/geodiversitas2022v44a25 d0184974-bea3-4f97-a2f8-98887ec4f87e 1638-9395 6902033 urn:lsid:zoobank.org:pub:EA12DCB7-A5BE-4763-B805-25087EBD726D Theriosuchus sp. ( Fig. 17 A-D) DESCRIPTION Small isolated teeth are commonly recovered from residues obtained from bulk screening. Many of them ( Fig. 17 A-D) are leaf-shaped, labiolingually compressed, low-crowned and pseudoziphodont, a characteristic of the posterior dentition in the atoposaurid genus Theriosuchus ( Schwarz & Salisbury 2005 ; Lauprasert et al. 2011 ; Martin et al. 2014b ). Members of the genus Theriosuchus are small crocodyliforms with total body lengths less than 1m ( Schwarz & Salisbury 2005 ). Besides teeth, two skull bones might belong to this genus: a right jugal (ANG 16-5179) and a fragmentary frontal (ANG 14-3692). The jugal is about 1 cm long and its ornamented lateral surface is thin and projects ventrally. The frontal preserves the interorbital area and displays an acute median keel on its dorsal surface. A finely sculpted osteoderm, longer than wide and possessing a shallow median keel ( Fig.19D ), matches the morphology of dorsal osteoderms of the tail region in Theriosuchus pusillus ( Owen 1879 ; Clark 1986 ).