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Fig. 7 | BMC Ecology and Evolution

Fig. 7

From: Dentition and feeding in Placodontia: tooth replacement in Henodus chelyops

Fig. 7

A Examples of small and large prey item dental loading regimes according to occlusal surface models: concave (left), flat (middle), and cusped (right), redrawn after Crofts [27, 28]. Red bars and arrows represent the location and direction of applied load for the small (up) and large (down) loading regimes across a representative range of tooth model appearances. B Macroscopic picture of the imprint of an Estheria shell collected by Reiff [59] (GPIT-PV-30799). Estheria is characteristic for the “Gipskeuper Formation” (equivalent to the Grabfeld Formation) in Tübingen/Lustnau where the different Henodus chelyops specimens were found. 2D slice (C) and 3D representation (D) of a gastropod shell found in the matrix attached to the skull of the specimen GPIT-PV-30003 of H. chelyops. E 3D representation of the gastropod shell on the occlusal surface of the H. chelyops tooth. F Hypothetical reconstruction of the jaw adductor musculature in H. chelyops, redrawn and colorized after Rieppel [3]. The nervus trigeminus innervated muscle is represented in orange and the nervus facialis innervated muscle (m. depressor mandibulae) in green. G Reconstruction of the crushing function of the palatine (green) and dentary (blue) teeth in H. chelyops. The hypothetical well-developed 1b-portion of musculus adductor mandibulae externus superficialis (orange) could facilitate lateral jaw movement in H. chelyops

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