Garda (arraina)

Garda (Hexanchidae) marrazo hexantxiformeen familiaren izen arrunta da, Atlantikoko, Indiako eta Ozeano Bareko itsasoetan bizi dena.

 Genero eta espezieak 
FishBaseren arabera, familiak 4 espezie ditu, 3 generotan banaturik.www.fishbase.org Hala ere, hona hemen sailkapen hedatua antzinako espezieak kontuan harturik:
 †Gladioserratus Underwood, Goswami, Prasad, Verma & Flynn, 2011
 †Gladioserratus aptiensis Pictet, 1864
 †Gladioserratus dentatus Guinot, Cappetta & Adnet, 2014
 †Gladioserratus magnus Underwood, Goswami, Prasad, Verma & Flynn, 2011
 Heptranchias Rafinesque, 1810
 Heptranchias perlo (Bonnaterre, 1788) (garda zazpizakatza)
 †Heptranchias ezoensis Applegate & Uyeno, 1968
 †Heptranchias howellii Reed, 1946
 †Heptranchias karagalensis Kozlov in Zhelezko & Kozlov, 1999
 †Heptranchias tenuidens Leriche, 1938
 Hexanchus Rafinesque, 1810
 Hexanchus griseus (Bonnaterre, 1788) (garda seizakatza)
 Hexanchus nakamurai Teng, 1962
 †Hexanchus agassizi Cappetta, 1976
 †Hexanchus andersoni Jordan, 1907
 †Hexanchus casieri Kozlov, 1999
 †Hexanchus collinsonae Ward, 1979
 †Hexanchus gracilis Davis, 1887
 †Hexanchus hookeri Ward, 1979
 †Hexanchus microdon Agassiz, 1843
 †Hexanchus tusbairicus Kozlov in Zhelezko & Kozlov, 1999
 †Notidanodon Cappetta, 1975
 †Notidanodon brotzeni Siverson, 1995
 †Notidanodon dentatus Woodward, 1886
 †Notidanodon lanceolatus Woodward, 1886
 †Notidanodon loozi Vincent, 1876
 †Notidanodon pectinatus Agassiz, 1843
 Notorynchus Ayres, 1855
 Notorynchus cepedianus (Péron, 1807)
 †Notorynchus borealus Jordan & Hannibal, 1923
 †Notorynchus kempi Ward, 1979
 †Notorynchus lawleyi Cigala Fulgosi, 1983
 †Notorynchus primigenius Agassiz, 1843
 †Notorynchus serratissimus Agassiz, 1843
 †Notorynchus subrecurvus Oppenheimer, 1907
 †Pachyhexanchus Cappetta, 1990
 †Pachyhexanchus pockrandti Ward & Thies, 1987
 †Paraheptranchias Pfeil, 1981
 †Paraheptranchias repens Probst, 1879
 †Pseudonotidanus Underwood & Ward, 2004
 †Pseudonotidanus semirugosus Underwood & Ward, 2004
 †Welcommia Cappetta, 1990
 †Welcommia bodeuri Cappetta, 1990
 †Welcommia cappettai Klug & Kriwet, 2010
 †Weltonia Ward, 1979
 †Weltonia ancistrodon Arambourg, 1952
 †Weltonia burnhamensis Ward, 1979

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