Ionoscopiformes, Grande & Bemis, 1998

Allain, Ronan, Vullo, Romain, Rozada, Lee, Anquetin, Jérémy, Bourgeais, Renaud, Goedert, Jean, Lasseron, Maxime, Martin, Jeremy E., Pérez-García, Adán, Fabrègues, Claire Peyre De, Royo-Torres, Rafael, Augier, Dominique & Bailly, Gilles, 2022, Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J / K boundary, Geodiversitas 44 (25), pp. 683-752 : 694

Ionoscopiformes indet.

( Fig. 8 E-G)

DESCRIPTION

Small, curved teeth with a pointed apex bearing two short, blunt carinae are assigned to an indeterminate ionoscopiform ( Fig. 8 E-G). Small ganoid scales characterized by a finely serrated posterior margin may also belong to this group. Such a material is similar to that described from the Purbeckian beds of Chassiron ( Vullo et al. 2014). As some recent studies suggest that Ionoscopiformes is not a monophyletic clade ( Ebert2018; López-Arbarello & Sferco 2018), the material from Angeac-Charente is assigned to Ionoscopiformes sensu Grande & Bemis (1998).

Figures

FIG. 8. — Actinopterygian remains from the Berriasian of Angeac-Charente:A, isolated tooth of Amiiformes indet. (ANG M-39); B, C, isolated tooth of Amiiformes indet. (ANG M-110); D, dentulous vomerine element of Amiiformes indet. (ANG M-56); E-G, isolated tooth of Ionoscopiformes indet. (ANG M-111); H, jaw frag- ment of Actinopterygii indet. (ANG M-38) in lingual view; I, vertebra of Actinopterygii indet. (ANG M-069). Scale bar: A-C, E-H, 500 µm; D, 250 µm; I, 2 mm.