Neurocranium; ventral view. A, Scyliorhinus ugoi, USNM 221611, male, 432 mm TL; B, Cephaloscyllium variegatum, AMS I.43762-001, female, 670 mm TL; C, Schroederichthys saurisqualus, UERJ uncatalogued, female, 564 mm TL; D, Atelomycterus fasciatus, CSIRO H1298-7, male, 370 mm TL; E, Asymbolus rubiginosus, AMS I.30393-004, male, 527 mm TL; F, Figaro boardmani, CSIRO H989-5, female, 465 mm TL; G, Apristurus longicephalus, HUMZ 170382, male, 475 mm TL. bp, basal plate; enc, external nasal cartilage; exc, excurrent aperture; hf, hyomandibular facet; icf, internal carotid foramen; inc, incurrent aperture; lrc, lateral rostral cartilage; mrc, medial rostral cartilage; nf, nasal fontanelle; sbp, subnasal plate; sf, stapedial foramen; ss, suborbital shelf.