Squalus acutirostris (A–E): HUMZ 74990, juvenile female, 536 mm TL in lateral (A) and ventral (B) views; first (C) and second (D) dorsal fins and caudal fin (E). S. suckleyi in lateral view (F): HUMZ 90963, adult female, 784 mm TL. Scale bars: 50 mm (A, B, F); 20 mm (C–E).

  Part of: Viana STFL, Carvalho MR (2020) Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited. Zoosystematics and Evolution 96(2): 275-311. https://doi.org/10.3897/zse.96.51962