Original description species: Gates, Gorscak & Makovicky, 2019
Genus: Galagadon Gates, Gorscak & Makovicky, 2019
Family: incert. fam.
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Carcharias javanus, Carcharias speciosus, Carcharias (Prionodon) angustidens, Carcharias (Prionodon) armatus, Carcharias (Prionodon) baltringensis, Carcharias (Prionodon) deformis, Carcharias (Prionodon) javanus, Carcharias (Prionodon) modestus, Carcharias (Prionodon) speciosus, Carcharias (Prionodon) tumidus, Galeocerdo angustidens, Galeocerdo cf. aduncus, Galeocerdo cf. medius, Galeocerdo davisi, Galeocerdo gajensis, Galeocerdo javanus, Galeocerdo medius, Galeocerdo praecursor, Galeocerdo wynnei, Galeocerdo (Physogaleus) aduncus, Galeocerdus aduncus, Galeocerdus gibbus, Galeocerdus rectus, Galeus aduncus, Galeus baltringensis, Notidamus biserratus, Notidanus biserratus, Physogaleus aduncus
Original description species: (Agassiz, 1835)
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeocerdo capellinii, Galeocerdo rosaliaensis
Original description species: Lawley, 1876
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: White, 1956
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeocerdo aff. latidens, Galeocerdo cf. eagleasomi, Galeocerdo cf. eaglesomei, Galeocerdo cf. latidens, Galeocerdo eagleasomi, Galeocerdo eaglesomi, Galeocerdo latidens, Galeocerdo latidense, Galeus latidens
Original description species: White, 1955
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Carcharodon bigelowi, Galeocerdo bigelowi, Galeocerdo casei, Galeocerdo cf. mayumbensis, Galeocerdo paulinoi
Original description species: Darteville & Casier, 1943
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Ameghino, 1901
Genus: Galeocerdo Müller & Henle, 1837
Family: Galeocerdonidae Poey, 1875
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Corax aff. jaekeli, Corax jaekeli, Galeocerdo jaekeli
Original description species: (Woodward, 1895)
Genus: Galeocorax Cappetta, 2012
Family: Pseudocoracidae Cappetta, 2012
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Paracorax unilateralis
Original description species: Averianov, 1997
Genus: Galeocorax Cappetta, 2012
Family: Pseudocoracidae Cappetta, 2012
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Alopiopsis cuvieri, Carcharias innominatus, Carcharias (Scoliodon) cuvieri, Galeus cuvieri, Notidanus cuvieri, Physogaleus cuvieri, Protogaleus cuvieri, Pseudogaleus voltai, Squalus carcharias*
Original description species: (Agassiz, 1835)
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeorhinus aff. duchaussoisi, Galeorhinus cf. duchaussoisi
Original description species: Adnet & Cappetta, 2008
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeorhinus aff. girardoti, Galeorhinus cf. girardoti
Original description species: Herman, 1977
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Popov & Lapkin, 2000
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeorhinus aff. goncalvesi, Galeorhinus cf. goncalvesi
Original description species: Antunes, Balbino & Cappetta, 1999
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Darteville & Casier, 1943
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Adnet & Cappetta, 2008
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Eugaleus aff. minutissimus, Eugaleus minutissimus, Galeorhinus aff. minutissimus
Original description species: (Arambourg, 1935)
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeorhinus aff. parvulus
Original description species: Darteville & Casier, 1943
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Averianov & Udovitshenko, 1993
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Eugaleus ypresiensis
Original description species: (Casier, 1946)
Genus: Galeorhinus Blainville, 1816
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ganntouria Noubhani & Cappetta, 1997
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Chimaera rugulosa, Chimaera (Ganodus) rugulosa, Ischyodus rugulosus
Original description species: (Egerton, 1843)
Genus: Ganodus
Family: Chimaeridae Bonaparte, 1831
Order: Chimaeriformes
Subclass: Holocephali

Synonyms: Ganopristis batavicus, Sclerorhynchus batavicus, Sclerorhynchus leptodon
Original description species: Arambourg, 1935
Genus: Ganopristis Arambourg, 1935
Family: Sclerorhynchidae Cappetta, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Wang, Zhang, Zhu & Zhao, 2009
Genus: Gansuselache Wang, Zhang, Zhu & Zhao, 2009
Family: Lonchidiidae Herman, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Cappetta, 1993
Genus: Garabatis Cappetta, 1993
Family: Myliobatidae Bonaparte, 1838
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Guinot, Cappetta & Adnet, 2014
Genus: Garrigascyllium Guinot, Cappetta & Adnet, 2014
Family: Brachaeluridae Applegate, 1974
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Cappetta, 1990
Genus: Gibbechinorhinus Cappetta, 1990
Family: Echinorhinidae Gill, 1862
Order: Echinorhiniformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Zangerl, 1981
Genus: Gilliodus Zangerl, 1981
Family: Eugeneodontidae Zangerl, 1981
Superfamily: Caseodontoidae
Order: Eugeneodontiformes
Subclass: Euchondrocephali

Synonyms: Gilliodus cf. peyeri
Original description species: Zangerl, 1981
Genus: Gilliodus Zangerl, 1981
Family: Eugeneodontidae Zangerl, 1981
Superfamily: Caseodontoidae
Order: Eugeneodontiformes
Subclass: Euchondrocephali

Synonyms: Ginglymostoma aff. angolense
Original description species: Darteville & Casier, 1943
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Case, Borodin & Leggett, 2001
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Galeus cristatus, Ginglymostoma cristata, Ginglymostoma grandis, Ginglymostoma miqueli, Nebrius delfortriei
Original description species: Daimeries, 1889
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Casier, 1947
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Darteville & Casier, 1943
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Noubhani & Cappetta, 1997
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Acrodobatis serra, Ginglymostoma aff. serra, Nebrius cf. serra
Original description species: (Leidy, 1877)
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Ginglymostoma sokotense
Original description species: White, 1934
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Ginglymostoma cf. subafricanum
Original description species: Arambourg, 1952
Genus: Ginglymostoma Müller & Henle, 1837
Family: Ginglymostomatidae Gill, 1862
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Duffin & Ivanov, 2008
Genus: Ginteria Duffin & Ivanov, 2008
Family: Anachronistidae Duffin & Ward, 1983
Order: incert. sedis
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Ivanov, 2013
Genus: Gissarodus Ivanov, 2013
Family: incert. fam.
Order: incert. sedis
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Zhang, Chen, Cheng & Zhang, 2012
Genus: Glabrisubcorona Johns, 1997
Subclass: Elasmobranchii

Original description species: Heidtke & Krätschmer, 2001
Genus: Gladbachus Heidtke & Krätschmer, 2001
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii

Synonyms: Notidanus aptiensis, Notorhynchus aptiensis, Notorynchus aptiensis
Original description species: (Pictet, 1864)
Genus: Gladioserratus Underwood, Goswami, Prasad, Verma & Flynn, 2011
Family: Hexanchidae Gray, 1851
Suborder: Hexanchoidei
Order: Hexanchiformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Guinot, Cappetta & Adnet, 2014
Genus: Gladioserratus Underwood, Goswami, Prasad, Verma & Flynn, 2011
Family: Hexanchidae Gray, 1851
Suborder: Hexanchoidei
Order: Hexanchiformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Underwood, Goswami, Prasad, Verma & Flynn, 2011
Genus: Gladioserratus Underwood, Goswami, Prasad, Verma & Flynn, 2011
Family: Hexanchidae Gray, 1851
Suborder: Hexanchoidei
Order: Hexanchiformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Ctenacanthus costellatus, Sphenacanthus costellatus
Original description species: (Traquair, 1884)
Genus: Glencartius Ginter & Skompski, 2019
Family: incert. fam.
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Original description species: Nessov, Mertiniene & Averianov in Nessov, 1997
Genus: Glickmanodus Nessov, Mertiniene & Averianov In Nessov, 1997
Family: Distobatidae Werner, 1989
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Case, Udovitshenko, Nessov, Averianov & Borodin, 1996
Genus: Glikmania Case, Udovitshenko, Nessov, Averianov & Borodin, 1996
Family: Dasyatidae Jordan & Gilbert, 1879
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Koot, Cuny, Tintori & Twitchett, 2013
Genus: Glikmanius Ginter, Ivanov & Lebedev, 2005
Family: Ctenacanthidae Dean, 1909
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Synonyms: Glikmanius cf. myachkovensis, Symmorium myachkovensis
Original description species: (Lebedev, 2001)
Genus: Glikmanius Ginter, Ivanov & Lebedev, 2005
Family: Ctenacanthidae Dean, 1909
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Synonyms: Cladodus girtyi, Cladodus occidentalis, Glikmanius cf. occidentalis, Symmorium occidentalis
Original description species: (Leidy, 1859)
Genus: Glikmanius Ginter, Ivanov & Lebedev, 2005
Family: Ctenacanthidae Dean, 1909
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Synonyms: Glueckmanotodus heinzelini heinzelini, Hypotodus heinzelini, Jaekelotodus heinzelini, Odontaspis (Synodontaspis) heinzelini
Original description species: (Casier, 1967)
Genus: Glueckmanotodus Zhelezko In Zhelezko & Kozlov, 1999
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Zhelezko in Zhelezko & Kozlov,1999
Genus: Glueckmanotodus Zhelezko In Zhelezko & Kozlov, 1999
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Zhelezko in Zhelezko & Kozlov, 1999
Genus: Glueckmanotodus Zhelezko In Zhelezko & Kozlov, 1999
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Zhelezko in Zhelezko & Kozlov, 1999
Genus: Glueckmanotodus Zhelezko In Zhelezko & Kozlov, 1999
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: St. John & Worthen, 1883
Genus: Glymmatacanthus St. John & Worthen, 1875
Family: Heslerodidae Maisey, 2010
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Original description species: Davis, 1883
Genus: Glyphanodus Davis, 1883
Family: Petalodontidae Newberry & Worthen, 1866
Order: Petalodontiformes
Subclass: Euchondrocephali

Synonyms: Carcharias (Glyphis) hastalis
Original description species: Agassiz, 1843
Genus: Glyphis Agassiz, 1843
Family: Carcharhinidae Jordan & Evermann, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Carchariolamna cf. heroni, Carchariolamna heroni, Isurus pagoda, Oxyrhina pagoda, Prionodon pagoda
Original description species: (Noetling, 1901)
Genus: Glyphis Agassiz, 1843
Family: Carcharhinidae Jordan & Evermann, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Rouault, 1858
Genus: Glyphys
Family: Carcharhinidae Jordan & Evermann, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Davis, 1883
Genus: Gnathacanthus Davis, 1883
Family: incert. fam.
Order: Chimaeriformes
Subclass: Holocephali

Original description species: Davis, 1883
Genus: Gnathacanthus Davis, 1883
Family: incert. fam.
Order: Chimaeriformes
Subclass: Holocephali

Original description species: Long et al., 2015
Genus: Gogoselachus Long, Burrow, Ginter, Maisey, Trinajstic, Coates, Young & Senden, 2015
Family: incert. fam.
Order: incert. sedis

Original description species: Long, Burrow, Ginter, Maisey, Trinajstic, Coates, Young & Senden, 2015
Genus: Gogoselachus Long, Burrow, Ginter, Maisey, Trinajstic, Coates, Young & Senden, 2015
Family: incert. fam.
Order: incert. sedis

Synonyms: Galeorhinus rodgersi, Mustelus rodgersi
Original description species: (Case, 1994)
Genus: Gomphogaleus Adnet & Cappetta, 2008
Family: Triakidae Gray, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Daymond, 1999
Genus: Gondwanodus Daymond, 1999
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii

Synonyms: Goodrichia eskdalensis, Goodrichthys cf. eskdalensis
Original description species: (Moy-Thomas, 1936)
Genus: Goodrichthys Moy-Thomas, 1951
Family: incert. fam.
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii

Original description species: Lund & Grogan, 2004
Genus: Gregorius Lund & Grogan, 2004
Family: Gregoriidae Lund & Grogan, 2004
Subclass: Euchondrocephali

Original description species: Cuny, Martin, Mazin & Rauscher, 1998
Genus: Grozonodon Cuny, Martin, Mazin & Rauscher, 1998
Family: incert. fam.
Order: incert. sedis
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Leidy, 1877
Genus: Gryphodobatis Leidy, 1877
Family: Orectolobidae Gill, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Wang, 1984
Genus: Gualepis Wang, 1984
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii

Synonyms: Idiacanthus bellistriatus, Idiacanthus cameratus, Idiacanthus trispinosus
Original description species: (Gunnell, 1933)
Genus: Gunnellodus Wilimovksy, 1954
Family: incert. fam.
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Gymnura cf. delpiti
Original description species: Cappetta, 1984
Genus: Gymnura Van Hasselt, 1823
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Herman, 1984
Genus: Gymnura Van Hasselt, 1823
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Gymnura cf. hovestadti
Original description species: Herman, 1984
Genus: Gymnura Van Hasselt, 1823
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Werner, 1989
Genus: Gymnura Van Hasselt, 1823
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Original description species: Averianov & Udovitshenko, 1993
Genus: Gymnura Van Hasselt, 1823
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Synonyms: Gyracanthus tuberculatus
Original description species: Agassiz, 1836
Genus: Gyracanthus Agassiz, 1836
Family: Climatiidae
Order: Climatiformes

Original description species: Ivanov, 2022
Genus: Gzhelodus Ivanov, 2022
Family: Protacrodontidae Cappetta, Duffin & Zidek, 1993
Superfamily: Protacrodontoidea
Cohort: Euselachii
Subclass: Elasmobranchii