FIGURE 5. Permodontodus waurikensis n. gen. n in Permodontodus waurikensis n. gen. n. sp., an Unusual Osteichthyan from Permian Oklahoma, USA

FIGURE 5. Permodontodus waurikensis n. gen. n. sp. A, Holotype, labial view. Left mandibular ramus, labial view, anterior to left. The projection at the upper left of the image resembles a tooth but is in fact an upward expansion of the enameloid/ cosmine ridge. Field sample 1 of 1/18/2022. IGM 5012. Scale bar = 2 mm. B, Holotype. Muscle insertion scars of the adductor mandibulae externus ventralis (amev), which connects to the anguloarticular condyle (aac). Field sample 1 of 1/18/2022. IGM 5012. Scale bar = 500 microns. C, Holotype. Detail of previous image; muscle insertion scars of the adductor mandibulae externus ventralis (amev). Field sample 1 of 1/18/2022. IGM 5012. Scale bar = 500 microns. D, Paratype. Detail of odontode pad. Field sample 1 of 1/20/2022. IGM 5013. Scale bar = 500 microns. E, image showing hollow Meckelian canal. Field sample 1 of 2/12/2022. IGM 5014. Scale bar = 2 mm. F, detail of odontode pad, showing wear damage where the edge of the pad has been removed by abrasion. Field sample 2 of 2/12/2022. IGM 5015. Scale bar = 500 microns. G, detail of odontode pad showing porous surface. Each pore is assumed here to represent the base of a spine-like odontode. Holotype, field sample 1 of 1/18/2022. IGM 5012. Scale bar = 500 microns. H, details of the odondote pad surface, same specimen as previous. Abbreviations: op, odontode pad; tp, tooth plate. Scale bar = 100 microns.