Chlamydoselachus

Ebert, David A. & Compagno, Leonard J. V., 2009, Chlamydoselachus africana, a new species of frilled shark from southern Africa (Chondrichthyes, Hexanchiformes, Chlamydoselachidae), Zootaxa 2173, pp. 1-18 : 15

Key to Species of Chlamydoselachus

1a. Total vertebral centra 160–171, MP-DP transition between the 72nd and 75th vertebral segment and occurs about over the pelvic fins. Spiral intestinal valve counts 35–49. Head length 13.1–16.2% of total length ..................................... ............................................................................................................. Chlamydoselachus anguineus Garman, 1884 .

1b. Total vertebral centra 147, MP-DP transition at 18th vertebral segment just behind the posterior end of the pectoral fins. Spiral intestinal valve counts 26–28. Head length 17.3–17.9% ......... Chlamydoselachus africana , new species.