Lacertidae indet.

Vasilyan, Davit, Cernansky, Andrej, Szyndlar, Zbigniew & Moers, Thomas, 2022, Amphibian and reptilian fauna from the early Miocene of Echzell, Germany, Fossil Record 25 (1), pp. 99-145 : 99

Lacertidae indet.

Fig. 12A, B

Material.

Right dentary HLMD-Ez 1992.

Description.

Dentary: The description is based on a right dentary that represents the anterior section (Fig. 12A, B ). The specimen bears 13 tooth positions with nine teeth still attached. However, its posterior region is broken off and the real tooth number is undoubtedly higher. The preserved portion of the dentary is more-or-less robust, anteroposteriorly elongated. The bone gradually narrows anteriorly. In dorsal view, its anterior portion has a small medial curvature. The otherwise smooth lateral surface is pierced by several labial foramina located in the mid-portion of the bone (five are preserved). In medial view, the Meckel`s groove is narrow, entirely open and gradually widens posteriorly. The subdental shelf is medially protruded and robust, especially in the anterior region. It narrows posteriorly because of the presence of the splenial articulation facet. The symphysis is rectangular.

Dentition.

The tooth implantation is pleurodont. The teeth are conical and high. They are bicuspid with a dominant distal cusp and smaller accessory mesial cusp. However, the anteriormost dentary teeth are monocuspid, becoming bicuspid starting from the sixth to seventh tooth position. The lingual aspect of the tooth crowns has very fine vertical striations, and the tooth necks bulge slightly medially, with small interdental gaps.

Figures

Figure 12. Lacertidae indet. (A, B) and cf. Chalcides sp. (C-H) from the Echzell locality. Right dentary HLMD-Ez 1992 in (A) lateral and (B) medial views with a detail of dentition. Right maxilla HLMD-Ez 1990 in (C) lateral and (D) medial views with a detail of dentition. Right dentary HLMD-Ez 1994 in (E) lateral and (F) medial views with a detail of dentition. Right dentary HLMD-Ez 1993 in (G) lateral, and (H) medial views.