-
disc rhomboidal, corners angular
snout short, firmdisc: central row 9-34 very large thorns - nape to D
disc covered in thornstail short, stout -
disc heart-shaped, front edge ~straight
snout pointed, tip firm
pectorals end before snout tiptop disc & tail: dense denticles
disc thorns: shoulder to D, 1 row of 30-40tail ~1/2 TL
no thorns on rear 1/3 tail