Hydrolagus

Hydrolagus Temporal range: Miocene–Recent PreꞒ Ꞓ O S D C P T J K Pg N

Hydrolagus colliei
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	Chimaeriformes
Family:	Chimaeridae
Genus:	Hydrolagus T. N. Gill, 1862
Type species
Chimaera colliei Lay & Bennett, 1839

The 22 recognized species in this genus are:

Hydrolagus affinis (Brito Capello (pt), 1868) (small-eyed rabbitfish)
Hydrolagus africanus (Gilchrist, 1922) (African chimaera) ^[2]
Hydrolagus alberti Bigelow & Schroeder, 1951 (gulf chimaera)
Hydrolagus alphus Quaranta, Didier, Long & Ebert, 2006 (whitespot ghost shark)
Hydrolagus barbouri (Garman, 1908) (ninespot chimaera)
Hydrolagus bemisi Didier, 2002 (pale ghostshark)
Hydrolagus colliei (G. T. Lay & E. T. Bennett, 1839) (spotted ratfish)
Hydrolagus eidolon D. S. Jordan & C. L. Hubbs, 1925
Hydrolagus erithacus Walovich, Ebert & Kemper, 2017 (Robin's ghostshark) ^[3]
Hydrolagus homonycteris Didier, 2008 (black ghostshark)
Hydrolagus lusitanicus T. Moura, I. M. R. Figueiredo, Bordalo-Machado, A. C. Almeida & Serrano-Gordo, 2005 (Portuguese chimaera)
Hydrolagus macrophthalmus F. de Buen, 1959 (bigeye chimaera)
Hydrolagus marmoratus Didier, 2008 (marbled ghost shark)
Hydrolagus matallanasi Soto & Vooren, 2004 (striped rabbitfish)
Hydrolagus mccoskeri L. A. K. Barnett, Didier, Long & Ebert, 2006 (Galápagos ghostshark)
Hydrolagus melanophasma K. C. James, Ebert, Long & Didier, 2009 (Eastern Pacific black ghostshark)
Hydrolagus mirabilis (Collett, 1904) (large-eyed rabbitfish)
Hydrolagus mitsukurii (D. S. Jordan & Snyder, 1904) (Mitsukuri's chimaera)
Hydrolagus novaezealandiae (Fowler, 1911) (dark ghostshark)
Hydrolagus pallidus Hardy & Stehmann, 1990 (pale chimaera)
Hydrolagus purpurescens (C. H. Gilbert, 1905) (purple chimaera)
Hydrolagus trolli Didier & Séret (fr), 2002 (abyssal ghostshark)

Fossil remains of the genus are known from the Miocene and Pliocene of California.^[4]

^ Weigmann, S. (2016): Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity. Journal of Fish Biology, 88 (3): 837-1037.

^ Walovich, K.A., Ebert, D.A., Long, D.J. & Didier, D.A. (2015): Redescription of Hydrolagus africanus (Gilchrist, 1922) (Chimaeriformes: Chimaeridae), with a review of southern African chimaeroids and a key to their identification. African Journal of Marine Science, 37 (2): 157-165.

^ Walovich, K.A., Ebert, D.A. & Kemper, J.M. (2017): Hydrolagus erithacus sp. nov. (Chimaeriformes: Chimaeridae), a new species of chimaerid from the southeastern Atlantic and southwestern Indian oceans. Zootaxa, 4226 (4): 509–520.

^ Popov, E. V., and G. T. Takeuchi. 2011. Miocene–early Pliocene chimaeroid fishes (Holocephali, Chimaeroidei) from California and a review of the global Neogene chimaeroid diversity and distribution. Journal of the Vertebrate Paleontology 31(Program and Abstracts):175.

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