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 107849 10.5252/geodiversitas2022v44a25 d0184974-bea3-4f97-a2f8-98887ec4f87e 1638-9395 6902033 urn:lsid:zoobank.org:pub:EA12DCB7-A5BE-4763-B805-25087EBD726D Pycnodontidae indet. ( Fig. 6 D-F) DESCRIPTION A second pycnodontiform taxon is represented by beanshaped to suboval teeth with a transverse groove or depression and one or two lateral tubercles ( Fig. 6 D-F). This taxon is also present in the Purbeckian facies of Cherves-de-Cognac, and has been described as “tooth morphotype 7” by Pouech et al. (2015 : fig. 8b). A very similar and likely congeneric form has also been described from the Wealden facies of southern England as Coelodus sp. ( Sweetman et al. 2014 ) then assigned to Ocloedus sp. ( Sweetman 2016 ) . However, the English material includes nearly complete vomerine dentitions with three tooth rows ( Sweetman et al. 2014 : fig. 10e), indicating that this unnamed species does not belong to either Coelodus or Ocloedus , which both have five vomerine tooth rows (Poyato-Ariza & Wenz 2002). Numerous ventral keel scales showing contacting spines of anteroposteriorly increasing size, can be assigned to Pycnodontidae (see Poyato-Ariza & Wenz 2002; Sweetman et al. 2014 ).