Ventral view of the head. A, Scyliorhinus canicula, MNHN 1999–1732, female, 418.5 mm TL; B, Schroederichthys saurisqualus, UERJ uncatalogued, female, 564 mm TL; C, Holohalaelurus regani, SAIAB 25717, male, 610 mm TL. anf, anterior nasal flap; llf, lower labial furrow; mrd, mesonarial crest; ulf, upper labial furrow. Scale bar: 20 mm.

 
 
  Part of: Soares KDA, de Carvalho MR (2020) Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology. Zoosystematics and Evolution 96(2): 345-395. https://doi.org/10.3897/zse.96.52420