Obruchevodus griffithi (1)
GROGAN, LUND & FATH, 2014
Original description species: GROGAN, LUND & FATH, 2014
Genus: Obruchevodus GROGAN, LUND & FATH, 2014
Family: Petalodontidae NEWBERRY & WORTHEN, 1866
Order: Petalodontiformes
Subclass: Euchondrocephali
Occitanodus sudrei (1)
GUINOT, CAPPETTA & ADNET, 2014
Original description species: GUINOT, CAPPETTA & ADNET, 2014
Genus: Occitanodus GUINOT, CAPPETTA & ADNET, 2014
Family: Orthacodontidae GLIKMAN, 1957
Suborder: Hexanchoidei
Order: Hexanchiformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontacanthus crenatus (3)
AGASSIZ, 1844
Synonyms: Ctenoptychius crenatus
Original description species: AGASSIZ, 1844
Genus: Odontacanthus AGASSIZ, 1845
Odontaspis aculeatus (11)
(CAPPETTA & CASE, 1975)
Synonyms: Hypotodus aculeatus
Original description species: (CAPPETTA & CASE, 1975)
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis carolinensis (2)
CASE & BORODIN, 2000
Original description species: CASE & BORODIN, 2000
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis kaikoraensis (1)
DAVIS, 1888
Synonyms: Carcharias kaikoraensis
Original description species: DAVIS, 1888
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis nonelegans (1)
AMEGHINO, 1906
Original description species: AMEGHINO, 1906
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis rothi (1)
AMEGHINO, 1906
Original description species: AMEGHINO, 1906
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis speyeri (12)
DARTEVELLE & CASIER, 1943
Synonyms: Odontaspis (Odontaspis) speyeri, Palaeohypotodus speyeri
Original description species: DARTEVELLE & CASIER, 1943
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis watinensis (1)
COOK, WILSON, MURRAY, PLINT, NEWBREY & EVERHART, 2013
Original description species: COOK, WILSON, MURRAY, PLINT, NEWBREY & EVERHART, 2013
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontaspis winkleri (66)
LERICHE, 1905
Synonyms: Eugomphodus winkleri, Odontaspis aff. winkleri, Odontaspis cf. winkleri, Odontaspis (Synodontaspis) aff. winkleri, Odontaspis (Synodontaspis) winkleri, Synodontaspis winkleri
Original description species: LERICHE, 1905
Genus: Odontaspis AGASSIZ, 1838
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Odontorhytis pappenheimi (9)
BÖHM, 1926
Synonyms: Odontorhytis aff. pappenheimi
Original description species: BÖHM, 1926
Genus: Odontorhytis BÖHM, 1926
Family: incert. fam.
Order: incert. sedis
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ohiolepis newberryi (3)
(WELLS, 1944)
Synonyms: Ohiolepis aff. newberryi
Original description species: (WELLS, 1944)
Genus: Ohiolepis WELLS, 1944
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii
Ohiolepis xitunensis (1)
WANG, 1983
Original description species: WANG, 1983
Genus: Ohiolepis WELLS, 1944
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii
Oligodalatias jordani (2)
WELTON, 2016
Original description species: WELTON, 2016
Genus: Oligodalatias WELTON, 2016
Family: Dalatiidae GRAY, 1851
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Oligodalatias roederi (1)
WELTON, 1979
Original description species: WELTON, 1979
Genus: Oligodalatias WELTON, 2016
Family: Dalatiidae GRAY, 1851
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Oligoraja pristina (1)
REINECKE, 2015
Original description species: REINECKE, 2015
Genus: Oligoraja REINECKE, 2015
Family: Rajidae BONAPARTE, 1831
Suborder: Rajoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Omalodus bryanti (5)
(WELLS, 1944)
Synonyms: Phoebodus bryanti
Original description species: (WELLS, 1944)
Genus: Omalodus GINTER & IVANOV, 1992
Family: Omalodontidae GINTER, LIAO, & VALENZUELA-RÍOS, 2008
Order: Omalodontiformes
Subclass: Elasmobranchii
Omalodus grabaui (6)
(HUSSAKOF & BRYANT, 1918)
Synonyms: Dittodus grabaui
Original description species: (HUSSAKOF & BRYANT, 1918)
Genus: Omalodus GINTER & IVANOV, 1992
Family: Omalodontidae GINTER, LIAO, & VALENZUELA-RÍOS, 2008
Order: Omalodontiformes
Subclass: Elasmobranchii
Omalodus schultzei (1)
HAMPE, ABOUSSALAM & BECKER, 2004
Original description species: HAMPE, ABOUSSALAM & BECKER, 2004
Genus: Omalodus GINTER & IVANOV, 1992
Family: Omalodontidae GINTER, LIAO, & VALENZUELA-RÍOS, 2008
Order: Omalodontiformes
Subclass: Elasmobranchii
Omanoselache angiolinii (2)
KOOT, CUNY, TINTORI & TWITCHETT, 2013
Original description species: KOOT, CUNY, TINTORI & TWITCHETT, 2013
Genus: Omanoselache KOOT, CUNY, TINTORI & TWITCHETT, 2013
Family: incert. fam.
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Omanoselache halli (1)
KOOT & CUNY, 2015
Original description species: KOOT & CUNY, 2015
Genus: Omanoselache KOOT, CUNY, TINTORI & TWITCHETT, 2013
Family: incert. fam.
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Omanoselache hendersoni (2)
KOOT, CUNY, TINTORI & TWITCHETT, 2013
Original description species: KOOT, CUNY, TINTORI & TWITCHETT, 2013
Genus: Omanoselache KOOT, CUNY, TINTORI & TWITCHETT, 2013
Family: incert. fam.
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Onchopristis dunklei (30)
MCNULTY & SLAUGHTER, 1962
Synonyms: Onchopristis cruciformis, Onchopristis dunklei dunklei, Sechmetia cruciformis
Original description species: MCNULTY & SLAUGHTER, 1962
Genus: Onchopristis STROMER, 1917
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Onchopristis numidus (18)
(HAUG, 1905)
Synonyms: Onchopristis cf. numidus, Onchopristis foureaui, Platyspondylus foureaui
Original description species: (HAUG, 1905)
Genus: Onchopristis STROMER, 1917
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Onchosaurus pharao (20)
(DAMES, 1887)
Synonyms: Gigantichthys pharao, Ischyrhiza iwakiensis, Onchosaurus cf. pharao, Onchosaurus iwakiensis, Onchosaurus (Onchosaurus) pharao, Titanichthys pharao
Original description species: (DAMES, 1887)
Genus: Onchosaurus GERVAIS, 1852
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Onchosaurus radicalis (6)
GERVAIS, 1852
Synonyms: Onchosaurus cf. radicalis
Original description species: GERVAIS, 1852
Genus: Onchosaurus GERVAIS, 1852
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Onchus heterogyrus (4)
AGASSIZ, 1844
Synonyms: Ctenacanthus heterogyrus
Original description species: AGASSIZ, 1844
Genus: Onchus AGASSIZ, 1837
Family: Squalidae BONAPARTE, 1834
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Oncobatis pentagonus (1)
LEIDY, 1873
Original description species: LEIDY, 1873
Genus: Oncobatis LEIDY, 1873
Family: Rajidae BONAPARTE, 1831
Suborder: Rajoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Onychoselache sp. (1)

Genus: Onychoselache DICK, 1978
Family: incert. fam.
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Onychoselache traquairi (5)
DICK, 1978
Original description species: DICK, 1978
Genus: Onychoselache DICK, 1978
Family: incert. fam.
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides angulatus (2)
UNDERWOOD & CUMBAA, 2010
Original description species: UNDERWOOD & CUMBAA, 2010
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides gijseni (1)
HERMAN & VAN DEN EECKHAUT, 2010
Original description species: HERMAN & VAN DEN EECKHAUT, 2010
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides glashoffi (1)
THIES, 1981
Original description species: THIES, 1981
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides multistriatus (2)
WERNER, 1989
Original description species: WERNER, 1989
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides parvula (6)
(DALINKEVICIUS, 1935)
Synonyms: Orectoloboides parvulus
Original description species: (DALINKEVICIUS, 1935)
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides pattersoni (2)
THIES, 1983
Original description species: THIES, 1983
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectoloboides reyndersi (5)
ADNET, 2006
Original description species: ADNET, 2006
Genus: Orectoloboides CAPPETTA, 1977
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectolobus gippslandicus (2)
(CHAPMAN & CUDMORE, 1924)
Synonyms: Squatina gippslandicus
Original description species: (CHAPMAN & CUDMORE, 1924)
Genus: Orectolobus BONAPARTE, 1834
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orectolobus ziegenhinei (1)
CAPPETTA & CASE, 2016
Original description species: CAPPETTA & CASE, 2016
Genus: Orectolobus BONAPARTE, 1834
Family: Orectolobidae GILL, 1896
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orestiacanthus fergusi (4)
LUND, 1984
Original description species: LUND, 1984
Genus: Orestiacanthus LUND, 1974
Family: Symmoriidae ZANGERL, 1990
Order: Symmoriiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii
Ornatoscyllium rugasimulatum (1)
GUINOT, CAPPETTA & ADNET, 2014
Original description species: GUINOT, CAPPETTA & ADNET, 2014
Genus: Ornatoscyllium UNDERWOOD & WARD, 2004
Family: incert. fam.
Order: Orectolobiformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ornithoprion hertwigi (3)
ZANGERL, 1966
Original description species: ZANGERL, 1966
Genus: Ornithoprion ZANGERL, 1966
Family: Caseodontidae ZANGERL, 1981
Superfamily: Caseodontoidae
Order: Eugeneodontiformes
Subclass: Euchondrocephali
Orodus catenatus (1)
PORTLOCK (ex AGASSIZ), 1843
Original description species: PORTLOCK (ex AGASSIZ), 1843
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus cinctus (6)
AGASSIZ, 1843
Original description species: AGASSIZ, 1843
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus decussatus (3)
ST. JOHN & WORTHEN, 1875
Synonyms: Orodus cf. decussatus
Original description species: ST. JOHN & WORTHEN, 1875
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus devonicus (1)
HUSSAKOF & BRYANT, 1918
Original description species: HUSSAKOF & BRYANT, 1918
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus elongatus (2)
DAVIS, 1883
Original description species: DAVIS, 1883
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus gibbus (2)
PORTLOCK (ex AGASSIZ), 1843
Synonyms: Orodus cf. gibbus
Original description species: PORTLOCK (ex AGASSIZ), 1843
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus greggi (1)
ZANGERL, 1981
Original description species: ZANGERL, 1981
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus ipeunaensis (1)
CHAHUD, FAIRCHILD & PETRI, 2010
Original description species: CHAHUD, FAIRCHILD & PETRI, 2010
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus mammillaris (5)
NEWBERRY & WORTHEN, 1866
Synonyms: Orodus cf. mammillaris, Orodus mammilaris
Original description species: NEWBERRY & WORTHEN, 1866
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus micropterygius (2)
ZANGERL, 1981
Original description species: ZANGERL, 1981
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus minutus (3)
NEWBERRY & WORTHEN, 1866
Original description species: NEWBERRY & WORTHEN, 1866
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus moniliformis (1)
DAVIS, 1883
Original description species: DAVIS, 1883
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus ornatus (3)
NEWBERRY & WORTHEN, 1866
Original description species: NEWBERRY & WORTHEN, 1866
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus ramosus (11)
AGASSIZ, 1843
Original description species: AGASSIZ, 1843
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus tenuis (1)
DAVIS, 1883
Original description species: DAVIS, 1883
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Orodus variocostatus (3)
ST. JOHN & WORTHEN, 1875
Original description species: ST. JOHN & WORTHEN, 1875
Genus: Orodus AGASSIZ, 1838
Family: Orodontidae DE KONINCK, 1878
Order: Orodontiformes
Subclass: Euchondrocephali
Oromobula dakhlaensis (2)
ADNET, CAPPETTA, GUINOT & NOTARBARTOLO DI SCIARA, 2012
Original description species: ADNET, CAPPETTA, GUINOT & NOTARBARTOLO DI SCIARA, 2012
Genus: Oromobula ADNET, CAPPETTA, GUINOT & NOTARBARTOLO DI SCIARA, 2012
Family: Mobulidae BONAPARTE, 1838
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orpodon heersensis (3)
(HERMAN, 1972)
Synonyms: Jaekelotodus heersensis, Odontaspis heersensis
Original description species: (HERMAN, 1972)
Genus: Orpodon CAPPETTA & NOLF, 2005
Family: Odontaspididae MÜLLER & HENLE, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orthacanthus bohemicus (17)
FRITSCH, 1889
Synonyms: Orthacanthus (Orthacanthus) bohemicus
Original description species: FRITSCH, 1889
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus commailli (2)
(HEYLER & POPLIN, 1982)
Synonyms: Expleuracanthus commailli
Original description species: (HEYLER & POPLIN, 1982)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus compressus (29)
(NEWBERRY, 1856)
Synonyms: Ctenacanthus clarki, Ctenacanthus clarkii, Ctenacanthus compressus, Didymodus compressus, Diplodus compressus, Dittodus compressus, Orthacanthus aff. compressus, Orthacanthus cf. compressus, Pleuracanthus (Diplodus) compressus, Xenacanthus cf. compressus, Xenacanthus compressus
Original description species: (NEWBERRY, 1856)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus cylindricus (7)
AGASSIZ, 1843
Synonyms: Orthacanthus (Orthacanthus) cylindricus, Pleuracanthus cylindricus
Original description species: AGASSIZ, 1843
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus denticulatus (4)
(DAVIS, 1880)
Synonyms: Pleuracanthus denticulatus
Original description species: (DAVIS, 1880)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus donnelljohnsi (1)
JOHNSON & THAYER, 2010
Original description species: JOHNSON & THAYER, 2010
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus gibbosus (8)
(BINNEY, 1841)
Synonyms: Diplodus gibbosus
Original description species: (BINNEY, 1841)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus gracilis (12)
(GIEBEL, 1848)
Synonyms: Chilodus gracilis, Orthacanthus cf. gracilis
Original description species: (GIEBEL, 1848)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus huberi (1)
ZIDEK, 1992
Original description species: ZIDEK, 1992
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus kounoviensis (18)
FRITSCH, 1889
Synonyms: Orthacanthus cf. kounoviensis, Orthacanthus (Orthacanthus) kounoviensis
Original description species: FRITSCH, 1889
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus meridionalis (6)
SOLER-GIJÓN, 1997
Synonyms: Orthacanthus (Orthacanthus) meridionalis
Original description species: SOLER-GIJÓN, 1997
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus pinguis (5)
FRITSCH, 1889
Synonyms: Orthacanthus (Orthacanthus) pinguis
Original description species: FRITSCH, 1889
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus platypternus (21)
(COPE, 1884)
Synonyms: Diacranodus platypternus, Didymodus platypternus, Orthacanthus aff. platypternus, Xenacanthus platypternus
Original description species: (COPE, 1884)
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus texensis (20)
COPE, 1888
Synonyms: Diacranodus texensis, Didymodus texensis, Orthacanthus (Lebachacanthus) texensis, Xenacanthus aff. texensis, Xenacanthus texensis
Original description species: COPE, 1888
Genus: Orthacanthus AGASSIZ, 1843
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacanthus (Orthacanthus) buxieri (4)
HEYLER & POPLIN, 1990
Synonyms: Orthacanthus buxieri
Original description species: HEYLER & POPLIN, 1990
Genus: Orthacanthus (Orthacanthus)
Family: Diplodoselachidae DICK, 1981
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii
Orthacodus longidens (9)
(AGASSIZ, 1843)
Original description species: (AGASSIZ, 1843)
Genus: Orthacodus WOODWARD, 1889
Family: Orthacodontidae GLIKMAN, 1957
Suborder: Hexanchoidei
Order: Hexanchiformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orthechinorhinus davidae (1)
WELTON, 2016
Original description species: WELTON, 2016
Genus: Orthechinorhinus ADNET, 2006
Family: Echinorhinidae GILL, 1862
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orthechinorhinus pfeili (6)
ADNET, 2006
Original description species: ADNET, 2006
Genus: Orthechinorhinus ADNET, 2006
Family: Echinorhinidae GILL, 1862
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Orthodon condamyi (3)
COQUAND, 1860
Original description species: COQUAND, 1860
Genus: Orthodon COQUAND, 1860
Family: Scyliorhinidae GILL, 1862
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ossianodus nebraskensis (1)
GINTER, 2016
Original description species: GINTER, 2016
Genus: Ossianodus GINTER, 2016
Family: Hybodontidae OWEN, 1846
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Ostenoselache stenosoma (1)
DUFFIN, 1998
Original description species: DUFFIN, 1998
Genus: Ostenoselache DUFFIN, 1998
Family: Ostenoselachidae DUFFIN, 1998
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus aksuaticus (4)
(MENNER, 1928)
Synonyms: Carcharodon toliapicus ak-suatica
Original description species: (MENNER, 1928)
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus angustidens (172)
(AGASSIZ, 1843)
Synonyms: Carcharocles aff. angustidens, Carcharocles angustidens, Carcharocles angustidens turgidus, Carcharocles cf. angustidens, Carcharocles rectus, Carcharocles turgidus, Carcharodon aff. angustidens, Carcharodon aff. angustidens turgidus, Carcharodon aff. turgidus, Carcharodon angustidens, Carcharodon angustidens angustidens, Carcharodon angustidens turgidus, Carcharodon arndti, Carcharodon cf. angustidens, Carcharodon cf. praemegalodon, Carcharodon cf. turgidus, Carcharodon lanceolatus, Carcharodon longidens, Carcharodon megalodon robustus, Carcharodon praemegalodon, Carcharodon rectus, Carcharodon robustus, Carcharodon simus, Carcharodon turgidus, Otodus angustidens angustidens, Otodus angustidens turgidus, Otodus arndti, Otodus lanceolatus, Otodus praemegalodon, Otodus rectus, Otodus robustus, Otodus turgidus, Procarcharodon angustidens, Procarcharodon angustidens angustidens, Procarcharodon cf. angustidens, Procarcharodon praemegalodon, Procarcharodon turgidus
Original description species: (AGASSIZ, 1843)
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus hastalis (1)
LAWLEY, 1876
Original description species: LAWLEY, 1876
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus limhamnensis (1)
DAVIS, 1890
Original description species: DAVIS, 1890
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus minor (5)
GIEBEL, 1848
Synonyms: Carcharodon minor, Otodus minor minor
Original description species: GIEBEL, 1848
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus minor turkmenicus (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus naidini (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus obliquus (124)
AGASSIZ, 1843
Synonyms: Carcharodon obliquus, Lamna obliqua, Lamna obliquus, Odontaspis taurus obliqua, Otodus cf. obliquus, Otodus giganteus, Otodus plicatilis
Original description species: AGASSIZ, 1843
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus obliquus ajatensis (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus obliquus minor (2)
LERICHE, 1908
Original description species: LERICHE, 1908
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus obliquus mugodzharicus (2)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus poseidoni (2)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus poseidoni poseidoni (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus poseidoni turanensis (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus poseidoni ustyurtensis (1)
ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Original description species: ZHELEZKO IN ZHELEZKO & KOZLOV, 1999
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus sokolovi (32)
(JAEKEL, 1895)
Synonyms: Carcharocles auriculatus sokolowi, Carcharocles cf. sokolowi, Carcharocles sokolovi, Carcharocles sokolowi, Carcharodon angustidens sokolowi, Carcharodon sokolovi, Carcharodon sokolowi, Otodus cf. sokolovi, Otodus cf. sokolowi, Otodus sokolovi sokolovi, Procarcharodon angustidens cf. sokolowi, Procarcharodon cf. sokolowi, Procarcharodon sokolovi, Procarcharodon sokolowi
Original description species: (JAEKEL, 1895)
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus sokolovi caspiensis (1)
(ZHELEZKO IN ZHELEZKO & KOZLOV, 1999)
Original description species: (ZHELEZKO IN ZHELEZKO & KOZLOV, 1999)
Genus: Otodus AGASSIZ, 1843
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus (Carcharocles) auriculatus (64)
(BLAINVILLE, 1818)
Synonyms: Carcharias leptodon, Carcharias megalotis, Carcharocles disauris, Carcharodon auriculatus disauris, Carcharodon auriculatus toliapicus, Carcharodon contortidens, Carcharodon crasidens, Carcharodon disauris, Carcharodon heterodon, Carcharodon interamniae, Carcharodon lanciformis, Carcharodon latidens, Carcharodon leptodon, Carcharodon megalotis, Carcharodon mortoni, Carcharodon strömeri, Carcharodon stromeri, Carcharodon sulcatus, Carcharodon toliapicus, Galeocerdo sismonda, Galeocerdo sismondae, Otodus auriculatus, Otodus auriculatus auriculatus, Otodus auriculatus disauris, Otodus contortidens, Otodus crassidens, Otodus disauris, Otodus heterodon, Otodus interamniae, Otodus lanciformis, Otodus leptodon, Otodus megalotis, Otodus mortoni, Otodus orientalis, Otodus stromeri, Otodus toliapicus, Procarcharodon disauris, Procarcharodon lanciformis
Original description species: (BLAINVILLE, 1818)
Genus: Otodus (Carcharocles)
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Otodus (Megaselachus) megalodon (418)
(AGASSIZ, 1837)
Synonyms: Carcharias giganteus, Carcharias grosseserratus, Carcharias incidens, Carcharias macrodon, Carcharias megalodon, Carcharias mexicanus, Carcharias polygurus, Carcharias polygyrus, Carcharias productus, Carcharias (Prionodon) incidens, Carcharocles aff. megalodon, Carcharocles aff. subauriculatus, Carcharocles megalodon, Carcharocles productus, Carcharodon arcuatus, Carcharodon branneri, Carcharodon brevis, Carcharodon costae, Carcharodon crassidens, Carcharodon crassirhadix, Carcharodon crassus, Carcharodon gibbesi, Carcharodon gigas, Carcharodon helveticus, Carcharodon humilis, Carcharodon intermedius, Carcharodon latissimus, Carcharodon leviathan, Carcharodon megalodon, Carcharodon megalodon indica, Carcharodon megalodon megalodon , Carcharodon megalodon polygyra, Carcharodon megalodon productus, Carcharodon megalodon siculus, Carcharodon megalodon yamanarii, Carcharodon morricei, Carcharodon polygurus, Carcharodon polygyrus, Carcharodon productus, Carcharodon quenstedti, Carcharodon rectidens, Carcharodon rectideus, Carcharodon semiserratus, Carcharodon subauriculatus, Carcharodon tumidissimus, Carcharodon turicensis, Megaselachus arcuatus, Megaselachus auriculatus falciformis, Megaselachus branneri, Megaselachus brevis, Megaselachus crassidens, Megaselachus crassirhadix, Megaselachus crassus, Megaselachus gigas, Megaselachus heterodon, Megaselachus humilis, Megaselachus incidens, Megaselachus leviathan, Megaselachus megalodon, Megaselachus megalodon indicus, Megaselachus polygyrus, Megaselachus productus, Megaselachus rectidens, Megaselachus semiserratus, Megaselachus subauriculatus, Otodus megalodon, Procarcharodon aff. megalodon, Procarcharodon megalodon, Procarcharodon megalodon megalodon , Selache manzonii
Original description species: (AGASSIZ, 1837)
Genus: Otodus (Megaselachus)
Family: Otodontidae GLICKMAN, 1964
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ouledia sigei (1)
CAPPETTA, 1986
Original description species: CAPPETTA, 1986
Genus: Ouledia CAPPETTA, 1986
Family: Gymnuridae FOWLER, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Oxynotus crochardi (2)
WELTON, 1981
Original description species: WELTON, 1981
Genus: Oxynotus RAFINESQUE, 1810
Family: Oxynotidae GILL, 1872
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Oxyprinichthys prioniferus (1)
AMEGHINO, 1901
Original description species: AMEGHINO, 1901
Genus: Oxyprinichthys AMEGHINO, 1901
Family: Lamnidae MÜLLER & HENLE, 1838
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ozarcus mapesae (1)
PRADEL, MAISEY, TAFFOREAU, MAPES & MALLATT, 2014
Original description species: PRADEL, MAISEY, TAFFOREAU, MAPES & MALLATT, 2014
Genus: Ozarcus PRADEL, MAISEY, TAFFOREAU, MAPES & MALLATT, 2014
Family: Falcatidae ZANGERL, 1990
Order: Symmoriiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii