Microvertebrate remains (Pisces, Archosauria) from the Middle Jurassic (Bathonian) of southern France

A Berriasian actinopterygian fauna from Cherves-de-Cognac, France: Biodiversity and palaeoenvironmental implications

“…Identification. These features are diagnostic for the genus Caturus, as pointed out by Cuny et al (1991), Mudroch and Thies (1996), Thies and Mudroch (1996), Kriwet et al (1997) and Buscalioni et al (2008).…”

“…The taxonomic assessment of this second morphotype is more questionable. Cuny et al (1991), Mudroch and Thies (1996), Thies and Mudroch (1996), Kriwet et al (1997) refer them to "pharyngeal" teeth of Lepidotes, but Estes and Sanchíz (1982) consider that the styliform teeth can be referred to Lepidotes, while those with a bulged base are characteristic of the Pycnodontidae, a view followed in part by Kriwet (1999). The examination of the large sample from Cherves-de-Cognac reveals that intermediate morphologies between the styliform and bulge-based teeth are present and included in morphotype 2.…”

“…There is neither superficial ornamentation nor carina, but Identification. Isolated teeth with this morphology are commonly found in actinopterygian assemblages in the Jurassic and Cretaceous of Western Europe, and has been described and figured by Estes and Sanchíz (1982), Cuny et al (1991), Mudroch and Thies (1996), Thies and Mudroch (1996), Kriwet et al (1997), Buscalioni et al (2008) and always referred to "oral" teeth of the genus Lepidotes. This genus gathers numerous species and was recently split into several genera (Isaniichthys Cavin and Suteethorn, 2006;Scheenstia L opez-Arbarello and Sferco, 2011;Macrosemimimus Schr€ oder et al, 2012;Callipurbeckia L opez-Arbarello, 2012;Thaiichthys Cavin et al, 2012).…”

“…Nevertheless, it has been shown for a long time that isolated fish teeth provide important information in paleontological studies, as exemplified by several fundamental works dealing with micro-vertebrate remains (i.e. Estes and Sanchíz, 1982;Cuny et al, 1991;Mudroch and Thies, 1996;Kriwet et al, 1997).…”

Late Triassic pycnodont fish remains (Neopterygii, Pycnodontiformes) from the Germanic basin

“…Although much progress has been made in the last years to establish dental characters of different taxa (e.g. Kriwet 1999, 2000a, 2000b, 2001b, 2002, Kriwet et al 1997) a lot of important data from comparable many taxa is still lacking. In addition, the prearticular dentition of the contemporaneous pycnodont Gibbodon is unknown.…”