Chlamydoselachidae Garman, 1884

Family Chlamydoselachidae Garman, 1884: 8 . Type genus: Chlamydoselachus Garman, 1884 .

Diagnosis. Hexanchoids with a slender, eel-like body, and prominent tropeic folds on the abdomen. The head has six paired gill openings, with the lower ends of the first gill extending across the throat. The snout is extremely short and truncated, the mouth being greatly elongated and terminal on the head. The teeth are alike in the upper and lower jaws, with three strong cusps and a pair of intermediate cusplets. The anal fin is larger than the single dorsal fin and the caudal fin lacks a subterminal notch.