HEXANCHIFORMES · 1 The ETYFish Project © Christopher Scharpf and Kenneth J. Lazara comments:  v. 6.0 - 17 July 2019

Order HEXANCHIFORMES 2 families · 4 genera · 7 species Family CHLAMYDOSELACHIDAE Frilled Sharks Chlamydoselachus Garman 1884 chlamydos, cloak or mantle, referring to first pair of gill slits that fit like a cloak or frill around throat; selachos, shark Chlamydoselachus africana Ebert & Compagno 2009 referring to South Africa’s Marine and Coastal Management research vessel Africana, for the excellent research surveys it has conducted; it is also the vessel that collected paratype Chlamydoselachus anguineus Garman 1884 snake-like, referring to snake or eel-like shape

Family HEXANCHIDAE Cow Sharks Heptranchias Rafinesque 1810 hepta, seven; [b]ranchos, gill or ankos, bend or hollow, referring to seven gill openings Heptranchias perlo (Bonnaterre 1788) from French vernacular le perlon, meaning pearl, perhaps referring to smooth and grayish (“lisse & grisâtre”) skin Hexanchus Rafinesque 1810 hexa-, six; [b]ranchos, gill or ankos, bend or hollow, referring to six gill openings Hexanchus griseus (Bonnaterre 1788) latinization of common name “Le Griset,” gray, referring to dark gray coloration Hexanchus nakamurai Teng 1962 in honor of Teng’s colleague Hiroshi Nakamura, who illustrated this species as H. griseus in 1936 Hexanchus vitulus Springer & Waller 1969 a bull calf, i.e., a small cowshark, smaller than its fellow Atlantic congener, H. griseus Notorynchus Ayres 1856 etymology not explained, presumably noto-, back, perhaps referring to single dorsal fin; rhynchus, snout, probably referring to broad, depressed snout Notorynchus cepedianus (Péron 1807) -anus, belonging to: Bernard-Germain-Étienne de La Ville-sur-Illon, comte de [count of] La Cepède (also spelled as La Cépède, Lacépède, or Lacepède, 1756-1825), author of Histoire Naturelle des Poissons (1798-1803)

Chlamydoselachus anguineus. From: Garman, S. 1884. An extraordinary shark. Bulletin of the Essex Institute 16: 47-55.