Jacquhermania duponti (30)
(Winkler, 1874)
Synonyms: Cestracion duponti, Dasyatis duponti, Raja aff. duponti, Raja cf. duponti, Raja duponti
Original description species: (Winkler, 1874)
Genus: Jacquhermania Cappetta, 1982
Family: Gymnuridae Fowler, 1934
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus africanus (7)
(Arambourg, 1952)
Synonyms: Carcharias robustus africanus, Hypotodus africanus, Odontaspis robusta africana, Odontaspis robustus africanus, Odontaspis (Synodontaspis) robusta africana
Original description species: (Arambourg, 1952)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus bagualensis (2)
Otero, Oyarzún, & Soto-Acuña, Yury-Yáñez, Gutierrez, Le Roux, Torres & Hervé, 2014
Original description species: Otero, Oyarzún, & Soto-Acuña, Yury-Yáñez, Gutierrez, Le Roux, Torres & Hervé, 2014
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus borystenicus (4)
Glikman, 1964
Original description species: Glikman, 1964
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus cavidens (2)
(Neugeboren, 1850)
Synonyms: Carcharodon cavidens, Otodus cavidens
Original description species: (Neugeboren, 1850)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus jaekeli (2)
Zhelezko, 1994
Original description species: Zhelezko, 1994
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus karagiensis (2)
(Glikman, 1964)
Original description species: (Glikman, 1964)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus londonensis (4)
Zhelezko, 1994
Synonyms: Jaekelotodus londonensis londonensis
Original description species: Zhelezko, 1994
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus minor (3)
Glikman, 1964
Synonyms: Jaekelotodus minor minor
Original description species: Glikman, 1964
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus robustus (49)
(Leriche, 1922)
Synonyms: Carcharias robustus, Hypotodus robustus, Jaekelotodus cf. robustus, Odontaspis robusta, Odontaspis (Synodontaspis) robusta
Original description species: (Leriche, 1922)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus speyeri (19)
(Darteville & Casier, 1943)
Synonyms: Odontaspis speyeri, Odontaspis (Odontaspis) speyeri, Palaeohypotodus speyeri
Original description species: (Darteville & Casier, 1943)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus trigonalis (42)
(Jaekel, 1895)
Synonyms: Hypotodus triangonalis, Hypotodus trigonalis, Iekelotodus trigonalis, Odontaspis cf. trigonalis, Odontaspis trigonalis, Odontaspis (Odontaspis) trigonalis, Odontaspis (Synodontaspis) cf. trigonalis, Odontaspis (Synodontaspis) trigonalis, Otodus trigonalis
Original description species: (Jaekel, 1895)
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus trigonalis bucharensis (1)
Zhelezko in Zhelezko & Kozlov, 1999
Original description species: Zhelezko in Zhelezko & Kozlov, 1999
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus trigonalis jaekeli (1)
Zhelezko in Zhelezko & Kozlov, 1999
Original description species: Zhelezko in Zhelezko & Kozlov, 1999
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus trigonalis medius (1)
Glikman, 1964
Original description species: Glikman, 1964
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jaekelotodus trigonalis minor (1)
Glikman, 1964
Original description species: Glikman, 1964
Genus: Jaekelotodus Menner, 1928
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jalodus australiensis (17)
(Long, 1990)
Synonyms: Phoebodus australiensis
Original description species: (Long, 1990)
Genus: Jalodus Ginter, 1999
Family: Jalodontidae Ginter, Hairapetian & Klug, 2002
Order: Jalodontiformes
Subclass: Elasmobranchii
Janassa angularis (3)
Branson, 1916
Original description species: Branson, 1916
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa bituminosa (32)
(Schlotheim, 1820)
Synonyms: Acrodus larva, Byzenos latipinnatus, Dictaea striata, Dictea striata, Janassa angulata, Janassa dictea, Janassa humboldii, Janassa humboldtii, Trilobites bituminosa
Original description species: (Schlotheim, 1820)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa brevis (3)
(Newberry, 1856)
Synonyms: Climaxodus brevis
Original description species: (Newberry, 1856)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa clarki (3)
Lund, 1989
Synonyms: Janassa cf. clarki
Original description species: Lund, 1989
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa clavata (6)
M'Coy, 1855
Synonyms: Chomatodus clavatus, Chomatodus truncatus, Chomatodus (Petalodus) truncatus
Original description species: M'Coy, 1855
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa emydinus (4)
(Cope, 1883)
Synonyms: Thoracodus emydinus
Original description species: (Cope, 1883)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa gurleiana (4)
(Cope, 1877)
Synonyms: Strigilina gurleiana
Original description species: (Cope, 1877)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa imbricata (6)
(M'Coy, 1848)
Synonyms: Climaxodus imbricatus, Janassa ordiana
Original description species: (M'Coy, 1848)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa kochi (6)
Nielsen, 1932
Original description species: Nielsen, 1932
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa korni (6)
(Weigelt, 1930)
Synonyms: Ctenoptychius korni
Original description species: (Weigelt, 1930)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa linguaeformis (4)
(Atthey, 1868)
Synonyms: Climaxodus linguaeformis, Climaxodus oratus, Climaxodus vermiformis, Janassa minutus, Janassa processus
Original description species: (Atthey, 1868)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa maxima (2)
Eastman, 1903
Original description species: Eastman, 1903
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa oblongus (3)
(Newberry & Worthen, 1870)
Synonyms: Cymatodus oblongus
Original description species: (Newberry & Worthen, 1870)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa strigilina (4)
(Cope, 1881)
Synonyms: Strigilina linguaformis
Original description species: (Cope, 1881)
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa unguicula (4)
Eastman, 1903
Original description species: Eastman, 1903
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Janassa unguiformis (2)
Eastman, 1903
Original description species: Eastman, 1903
Genus: Janassa Münster, 1839
Family: Janassidae Jaekel, 1899
Order: Petalodontiformes
Subclass: Euchondrocephali
Jiaodontus montaltissimus (2)
Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Original description species: Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Genus: Jiaodontus Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Family: Lonchidiidae Herman, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Jiaodontus sp. (2)

Genus: Jiaodontus Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Family: Lonchidiidae Herman, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Jiaodontus vedenemus (2)
Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Original description species: Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Genus: Jiaodontus Klug, Tütken, Wings, Pfretzschner & Martin, 2010
Family: Lonchidiidae Herman, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Jimpohlia erinacea (1)
Zangerl, 1979
Original description species: Zangerl, 1979
Genus: Jimpohlia Zangerl, 1979
Family: incert. fam.
Subclass: Subterbranchialia
Johnlongia allocotodon (4)
Siverson, 1996
Original description species: Siverson, 1996
Genus: Johnlongia Siverson, 1996
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Johnlongia parvidens (13)
(Cappetta, 1973)
Synonyms: Johnlongia cf. parvidens, Odontaspis parvidens
Original description species: (Cappetta, 1973)
Genus: Johnlongia Siverson, 1996
Family: Odontaspididae Müller & Henle, 1839
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Jolepis robusta (1)
(Brotzen, 1934)
Original description species: (Brotzen, 1934)
Genus: Jolepis Burrow & Turner, 2018
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii
Junggarensis ambiguus (1)
Roelofs, Konigshof, Trinajstic & Munkhjargal, 2021
Original description species: Roelofs, Konigshof, Trinajstic & Munkhjargal, 2021
Genus: Junggarensis Roelofs, Konigshof, Trinajstic & Munkhjargal, 2021
Family: incert. fam.
Order: Ctenacanthiformes
Superorder: Cladodontomorphi
Subclass: Elasmobranchii
Jurobatos cappettai (2)
Thies, 1982
Original description species: Thies, 1982
Genus: Jurobatos Thies, 1983
Family: Rhinobatidae Bonaparte, 1835
Order: Rhinopristiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii