Extended Data Fig. 4: Cross sectional views of Funcusvermis gilmorei dentigerous elements from micro-computed tomographic scan data and osteohistological sectioning.
From: Triassic stem caecilian supports dissorophoid origin of living amphibians
a–d, Coronal cross sections of referred left maxillopalatine (PEFO 46481). e–k, Coronal cross sections of holotype right pseudodentary (PEFO 43891). l–n, Coronal cross sections of paratype right pseudodentary (PEFO 46284). o–p, Microanatomy from osteohistological section of paratype right pseudodentary (PEFO 44432) in coronal view. r, Referred left maxillopalatine (PEFO 46481) in lateral view. Paratype right pseudodentary (PEFO 44432) in lateral (s) and medial (t) views. abcnV, alveolar branch cranial nerve V; dpdf, dorsal pseudodentary facet; ebcnV, external branch cranial nerve V; frac, fractures; fr, facial ramus; ig, interdental groove; laam, labial alveolar margin; lapw, labial pedicel wall; lasdg, labial subdental groove; liam, lingal alveolar margin; lipw, lingual pedicel wall; lisdg, lingual subdental groove; oc, osteocyte lacunae; om, orbital margin; p, pit; pc, pulp cavity; peecnV, posterior exit external branch cranial nerve V; sf, symphyseal foramen; vpdf, ventral pseudodentary facet. Red lines indicate locations of cross sections. Yellow outlines denote margins of canals connected to external pits. Scale bars equal 1 mm unless otherwise noted.
