Scinciformata Oppel 1811
Makaleler > Tam Makale · 2021
Yazarlar: Georgalis, Georgios L., Čerňanský, Andrej, Serdar MAYDA
, Uluslararası, 2021
Özet
Scinciformata indet. (Fig. 9) MATERIAL. — Turkey. Kavakdere: a right dentary (EUNMH PV 14051). DESCRIPTION Only a fragment of the right dentary is preserved, representing the anterior region (note that the anterior symphyseal portion is broken off and missing). This specimen possesses five tooth positions, where four teeth are still attached (Fig. 9). Meckel’s groove is fully open, but markedly narrow. In contrast, the subdental shelf is dorsoventrally wide. The dental crest is high, so only the crowns of the teeth exceed it dorsally. The midsection of the labial surface is pierced by one anteroposteriorly elongate labial foramen. Dentition Tooth implantation is pleurodont. The tooth necks are slightly enlarged lingually. The tooth crowns have blunt triangular apices, with their peaks being slightly recurved posterolingually. In lingual view, they possess labial and lingual cusps. The lingual side is bordered by culmen lateralis posterior and anterior and possesses striation formed by apicobasal ridges which are more-or-less parallel to each other. The number of striae ranges from five to seven. The labial aspect of the tooth crowns appears smooth. COMMENTS Only a small dentary fragment is preserved, of which allocation is difficult. Transversally bicuspid teeth together with apicobasal striation of their crows indicate its affinity with members of the group Scinciformata. Among skinks, the fully open Meckel’s groove indicates its similarity with members of the clade Scincidae (sensu Hedges 2014; Scincinae sensu Estes et al. 1988; for this character state, see Čerňanský & Syromyatnikova 2021 and literature therein). The dentition bears an overall resemblance with that of members of the genus Chalcides Laurenti, 1768 (see Čerňanský et al. 2020). However, due to its fragmentary nature, a more precise allocation of this material cannot be made.