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Fig. 11 | Swiss Journal of Palaeontology

Fig. 11

From: Cranial and mandibular anatomy of Plastomenus thomasii and a new time-tree of trionychid evolution

Fig. 11

Three dimensional renderings of the mandible of Plastomenus thomasii (AMNH FR 6015). A left lateral view; B right lateral view; C medial view of left mandibular ramus; D medial view of right mandibular ramus; E dorsal view; F posterodorsal view of posterior end of left mandibular ramus; G posterodorsal view of posterior end of right mandibular ramus. Medial views were achieved by artificially cutting the dentary along the symphysis. Note that bones are labelled in bold. Dashed lines circumscribe foramina to highlight their positions. aap anterior angular process, add adductor fossa, adp ascending dentary process, art articular, as articulation surface, cor coronoid, corp coronoid process, d dentary, dsf dorsal surangular foramen, dsym dorsal symphyseal mount, fai foramen alveolare inferius, fat foramen auriculotemporalis, fdfm foramen dentofaciale majus, fimm foramen intermandibulare medius, fM fossa Meckelii, matf medial auriculotemporal foramen, pre prearticular, rap retroarticular process, secf surangular ectocondylar flange, sM sulcus Meckelii, ssytr spatulate symphyseal triturating surface, syg symphyseal groove

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