Iago angustidens (11)
(CAPPETTA, 1973)
Synonyms: Triakis angustidens
Original description species: (CAPPETTA, 1973)
Genus: Iago COMPAGNO & SPRINGER, 1971
Family: Triakidae GRAY, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Iago carlaluisai (1)
LEDER, 2013
Original description species: LEDER, 2013
Genus: Iago COMPAGNO & SPRINGER, 1971
Family: Triakidae GRAY, 1851
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Iansan beurleni (9)
(SANTOS, 1968)
Synonyms: Rhinobatos beurleni
Original description species: (SANTOS, 1968)
Genus: Iansan BRITO & SERET, 1996
Family: Rhinobatidae BONAPARTE, 1835
Order: Rhinopristiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Iberolepis sp. (1)

Genus: Iberolepis MADER, 1986
Subclass: Elasmobranchii
Iberotrygon plagiolophus (1)
KRIWET, NUNN & KLUG, 2009
Original description species: KRIWET, NUNN & KLUG, 2009
Genus: Iberotrygon KRIWET, NUNN & KLUG, 2009
Family: incert. fam.
Order: Sclerorhynchiformes
Superorder: Pristiorajea
Subclass: Elasmobranchii
Igdabatis indicus (8)
PRASAD & CAPPETTA, 1993
Synonyms: Igdabatis cf. indicus
Original description species: PRASAD & CAPPETTA, 1993
Genus: Igdabatis CAPPETTA, 1972
Family: Myliobatidae BONAPARTE, 1838
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Igdabatis marmii (1)
BLANCO, 2019
Original description species: BLANCO, 2019
Genus: Igdabatis CAPPETTA, 1972
Family: Myliobatidae BONAPARTE, 1838
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Igdabatis sigmodon (5)
CAPPETTA, 1972
Synonyms: Igdabatis cf. sigmodon
Original description species: CAPPETTA, 1972
Genus: Igdabatis CAPPETTA, 1972
Family: Myliobatidae BONAPARTE, 1838
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ikamauius ensifer (6)
(DAVIS, 1888)
Synonyms: Pristiophorus ensifer, Trygon ensifer
Original description species: (DAVIS, 1888)
Genus: Ikamauius KEYES, 1979
Family: Pristiophoridae BLEEKER, 1859
Order: Pristiophoriformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Iniopera richardsoni (2)
ZANGERL & CASE, 1973
Synonyms: Iniopera cf. richardsoni
Original description species: ZANGERL & CASE, 1973
Genus: Iniopera ZANGERL & CASE, 1973
Family: Sibyrhynchidae ZANGERL & CASE, 1973
Order: Iniopterygiformes
Subclass: Holocephali
Iniopteryx rushlaui (4)
ZANGERL & CASE, 1973
Synonyms: Iniopteryx cf. rushlaui
Original description species: ZANGERL & CASE, 1973
Genus: Iniopteryx ZANGERL & CASE, 1973
Family: Iniopterygidae ZANGERL & CASE, 1973
Order: Iniopterygiformes
Subclass: Holocephali
Iniopteryx tedwhitei (1)
ZANGERL & CASE, 1973
Original description species: ZANGERL & CASE, 1973
Genus: Iniopteryx ZANGERL & CASE, 1973
Family: Iniopterygidae ZANGERL & CASE, 1973
Order: Iniopterygiformes
Subclass: Holocephali
Inioxyele whitei (1)
ZANGERL & CASE, 1973
Original description species: ZANGERL & CASE, 1973
Genus: Inioxyele ZANGERL & CASE, 1973
Family: Sibyrhynchidae ZANGERL & CASE, 1973
Order: Iniopterygiformes
Subclass: Holocephali
Isacrodus marthae (1)
IVANOV, NESTELL & NESTELL, 2012
Original description species: IVANOV, NESTELL & NESTELL, 2012
Genus: Isacrodus IVANOV, NESTELL & NESTELL, 2012
Family: Jalodontidae GINTER, HAIRAPETIAN & KLUG, 2002
Order: Phoebodontiformes
Subclass: Elasmobranchii
Isanodus nongbualamphuensis (1)
KHAMHA, CUNY & LAUPRASERT, 2016
Original description species: KHAMHA, CUNY & LAUPRASERT, 2016
Genus: Isanodus CUNY, SUTEETHORN, KAMHA, BUFFETAUT & PHILIPPE, 2006
Family: Lonchidiidae HERMAN, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Isanodus paladeji (10)
CUNY, SUTEETHORN, KAMHA, BUFFETAUT & PHILIPPE, 2006
Original description species: CUNY, SUTEETHORN, KAMHA, BUFFETAUT & PHILIPPE, 2006
Genus: Isanodus CUNY, SUTEETHORN, KAMHA, BUFFETAUT & PHILIPPE, 2006
Family: Lonchidiidae HERMAN, 1977
Superfamily: Hybodontoidea
Order: Hybodontiformes
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyodus acutus (2)
MEYER, 1859
Synonyms: Ischyodus cf. acutus
Original description species: MEYER, 1859
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus beaumonti (14)
(EGERTON, 1843)
Synonyms: Chimaera beaumonti, Chimaera (Ischyodon) beaumontii, Ischyodon beaumontii, Ischyodus beaumontii, Ischyodus cf. beaumonti, Ischyodus rigauxi
Original description species: (EGERTON, 1843)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus bifurcatus (11)
CASE, 1978
Synonyms: Ischyodus aff. bifurcatus, Ischyodus cf. bifurcatus
Original description species: CASE, 1978
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus colei (8)
(AGASSIZ, 1843)
Synonyms: Chimaera (Ganodus) colei, Ganodus colei
Original description species: (AGASSIZ, 1843)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus dolloi (17)
LERICHE, 1902
Synonyms: Ischyodus cf. dolloi
Original description species: LERICHE, 1902
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus dufrenoyi (7)
(EGERTON, 1843)
Synonyms: Chimaera dufrenoyi, Chimaera (Ischyodon) dufrenoyi, Ischyodon dufrenoyi, Ischyodon dufrenoyii
Original description species: (EGERTON, 1843)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus dutertrei (6)
EGERTON, 1843
Synonyms: Chimaera (Ischyodon) dutertrii, Ischyodon dutertrei, Ischyodon dutertrii
Original description species: EGERTON, 1843
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus egertoni (25)
(BUCKLAND, 1835)
Synonyms: Chimaera egertoni, Chimaera egertonii, Chimaera (Ischyodon) egertoni, Ischyodon egertoni, Ischyodon egertonii, Ischyodus cf. egertoni, Ischyodus cf. schuebleri, Ischyodus sauvagei, Ischyodus schuebleri, Ischyodus suevicus, Ischyodus suprajurensis
Original description species: (BUCKLAND, 1835)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus emarginatus (15)
(EGERTON, 1843)
Synonyms: Chimaera emarginata, Chimaera (Ischyodon) emarginata, Chimaera (Ischyodon) tessoni, Ganodus emarginatus, Ischyodon emarginata, Ischyodon emarginatus, Ischyodon tessonii, Ischyodus tessoni
Original description species: (EGERTON, 1843)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus incisus (4)
NEWTON, 1878
Original description species: NEWTON, 1878
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus latus (1)
NEWTON, 1878
Original description species: NEWTON, 1878
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus mortoni (3)
CHAPMAN & PRITCHARD, 1907
Original description species: CHAPMAN & PRITCHARD, 1907
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus obruchevi (1)
AVERIANOV, 1992
Original description species: AVERIANOV, 1992
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus personati (3)
(QUENSTEDT, 1858)
Synonyms: Chimaera personati
Original description species: (QUENSTEDT, 1858)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus planus (4)
NEWTON, 1878
Synonyms: Elasmodus planus
Original description species: NEWTON, 1878
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus quenstedti (7)
(WAGNER, 1857)
Synonyms: Chimaera (Ischyodon) quenstedti
Original description species: (WAGNER, 1857)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus rayhaasi (3)
HOGANSON & ERICKSON, 2005
Original description species: HOGANSON & ERICKSON, 2005
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus thurmanni (23)
PICET & CAMPICHE, 1858
Synonyms: Chimaera (Ischyodon) brevirostris, Ischyodon brevirostris, Ischyodus bouchardi, Ischyodus brevirostris, Ischyodus cf. brevirostris, Ischyodus cf. thurmanni
Original description species: PICET & CAMPICHE, 1858
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus townsendi (2)
(BUCKLAND, 1835)
Original description species: (BUCKLAND, 1835)
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyodus williamsae (4)
CASE, 1991
Original description species: CASE, 1991
Genus: Ischyodus EGERTON, 1843
Family: Edaphodontidae OWEN, 1846
Order: Chimaeriformes
Subclass: Holocephali
Ischyrhiza avonicola (35)
ESTES, 1964
Synonyms: Ischyrhiza aff. avonicola, Ischyrhiza cf. avonicola, Ischyrhiza germaniae, Ischyrhiza monasterica, Sclerorhynchus germaniae, Texatrygon avonicola
Original description species: ESTES, 1964
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza basinensis (1)
CASE, 1987
Original description species: CASE, 1987
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza chilensis (9)
(PHILIPPI, 1887)
Original description species: (PHILIPPI, 1887)
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza georgiensis (1)
CASE, SCHWIMMER, BORODIN & LEGGETT, 2001
Original description species: CASE, SCHWIMMER, BORODIN & LEGGETT, 2001
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza hartenbergeri (7)
CAPPETTA, 1975
Original description species: CAPPETTA, 1975
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza mira (52)
LEIDY, 1856
Synonyms: Ischyrhiza aff. mira, Ischyrhiza antiqua, Ischyrhiza mira mira, Onchosaurus (Ischyrhiza) antiquus
Original description species: LEIDY, 1856
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza mira schneideri (1)
SLAUGHTER & STEINER, 1968
Original description species: SLAUGHTER & STEINER, 1968
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza radiata (2)
CLARK, 1895
Original description species: CLARK, 1895
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza schneideri (8)
(SLAUGHTER & SCHNEIDER, 1968)
Original description species: (SLAUGHTER & SCHNEIDER, 1968)
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza serra (1)
NESSOV, 1997
Original description species: NESSOV, 1997
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ischyrhiza viaudi (2)
CAPPETTA, 1981
Original description species: CAPPETTA, 1981
Genus: Ischyrhiza LEIDY, 1856
Family: Sclerorhynchidae CAPPETTA, 1974
Suborder: Sclerorhynchoidei
Order: Rajiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Ishaquia globidens (2)
(ARAMBOURG, 1952)
Synonyms: Dasyatis globidens
Original description species: (ARAMBOURG, 1952)
Genus: Ishaquia NOUBHANI & CAPPETTA, 1995
Family: Dasyatidae JORDAN & GILBERT, 1879
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isistius triangulus (47)
(PROBST, 1879)
Synonyms: Centrina dertonensis, Isistius aff. triangulus, Isistius cf. triangulus, Scymnorhinus triangulus, Scymnus triangulus
Original description species: (PROBST, 1879)
Genus: Isistius GILL, 1865
Family: Dalatiidae GRAY, 1851
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isistius trituratus (45)
(WINKLER, 1874)
Synonyms: Centrina trituratus, Corax trituratus, Isistius aff. trituratus, Isistius cf. trituratus, Scymnus trituratus
Original description species: (WINKLER, 1874)
Genus: Isistius GILL, 1865
Family: Dalatiidae GRAY, 1851
Order: Squaliformes
Superorder: Squalomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isogomphodon acuarius (25)
(PROBST, 1879)
Synonyms: Alopecias acuarias, Aprionodon acuarias, Aprionodon acuarius, Carcharhinus acuarius, Carcharhinus (Aprionodon) gracilis, Carcharhinus (Aprionodon) lerichei minuta, Isogomphodon gracilis
Original description species: (PROBST, 1879)
Genus: Isogomphodon GILL, 1862
Family: Carcharhinidae JORDAN & EVERMANN, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isogomphodon aikenensis (1)
CICIMURRI & KNIGHT, 2019
Original description species: CICIMURRI & KNIGHT, 2019
Genus: Isogomphodon GILL, 1862
Family: Carcharhinidae JORDAN & EVERMANN, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isogomphodon caunellensis (7)
(CAPPETTA, 1970)
Synonyms: Aprionodon aff. caunellensis, Aprionodon caunellensis, Aprionodon cf. caunellensis, Isogomphodon cf. caunellensis
Original description species: (CAPPETTA, 1970)
Genus: Isogomphodon GILL, 1862
Family: Carcharhinidae JORDAN & EVERMANN, 1896
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna affinis (30)
(CASIER, 1946)
Synonyms: Lamiostoma affinis, Lamna affinis, Odontaspis (Synodontaspis) affinis
Original description species: (CASIER, 1946)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna bajarunasi (5)
(GLIKMAN & ZHELEZKO, 1985)
Synonyms: Lamiostoma bajarunasi
Original description species: (GLIKMAN & ZHELEZKO, 1985)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna biflexa (3)
(ROGOVICH, 1860)
Synonyms: Anomotodon biflexus, Oxyrhina biflexa
Original description species: (ROGOVICH, 1860)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna gracilis (75)
(LE HON, 1871)
Synonyms: Isurolamna rupeliensis, Lamiostoma gracilis, Lamiostoma rupeliensis, Lamna cf. rupeliensis, Lamna hasloensis, Lamna rupeliensis, Otodus rupeliensis, Oxyrhina gracilis, Rhizoquadrangulus rupeliensis
Original description species: (LE HON, 1871)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna inflata (31)
(LERICHE, 1905)
Synonyms: Isurolamna aff. inflata, Lamna inflata, Lamna lerichei inflata, Lamna vincenti inflata
Original description species: (LERICHE, 1905)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurolamna menneri (2)
(GLIKMAN & ZHELEZKO, 1985)
Synonyms: Lamiostoma menneri
Original description species: (GLIKMAN & ZHELEZKO, 1985)
Genus: Isurolamna CAPPETTA, 1976
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus biconvexus (2)
(AMEGHINO, 1906)
Synonyms: Oxyrhina biconvexus
Original description species: (AMEGHINO, 1906)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus desori (208)
(AGASSIZ, 1843)
Synonyms: Isurus cf. desori, Isurus desorii, Isurus desorii desorii, Isurus (Oxyrhina) desori, Lamiostoma desori, Lamna desori, Lamna inaequilateralis, Lamna lyellii, Oxyrhina aff. desori, Oxyrhina cf. desori, Oxyrhina desori, Oxyrhina desorii
Original description species: (AGASSIZ, 1843)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus incertus (2)
(MICHELOTTI, 1861)
Synonyms: Oxyrhina incerta
Original description species: (MICHELOTTI, 1861)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus laevigatus (1)
(DAIMERIES, 1888)
Original description species: (DAIMERIES, 1888)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus microtus (1)
(ROGOVICH, 1860)
Original description species: (ROGOVICH, 1860)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus minutus (17)
(AGASSIZ, 1843)
Synonyms: Lamna aff. minuta, Oxyrhina minuta
Original description species: (AGASSIZ, 1843)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus nakaminatoensis (1)
SAITO, 1961
Original description species: SAITO, 1961
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus planus (19)
(AGASSIZ, 1856)
Synonyms: Oxyrhina plana
Original description species: (AGASSIZ, 1856)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus rameshi (2)
MEHROTRA, MISHRA & SRIVASTAVA, 1973
Original description species: MEHROTRA, MISHRA & SRIVASTAVA, 1973
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus rectus (2)
(DAVIS, 1888)
Synonyms: Oxyrhina recta
Original description species: (DAVIS, 1888)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus retroflexus (95)
(AGASSIZ, 1838)
Synonyms: Anotodus agassizii, Anotodus cf. agassizii, Anotodus complanatus, Anotodus retroflexus, Isurus retoflexus, Isurus retroflexa, Oxyrhina agassizii, Oxyrhina complanata, Oxyrhina retroflexa
Original description species: (AGASSIZ, 1838)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus rhenanus (2)
(JAEKEL, 1898)
Synonyms: Oxyrrhina rhenana
Original description species: (JAEKEL, 1898)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus salentinus (2)
(COSTA, 1850)
Synonyms: Otodus salentinus
Original description species: (COSTA, 1850)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus sillimani (10)
(GIBBES, 1847)
Synonyms: Isurus sillimanii, Oxyrhina aff. sillimani, Oxyrhina cf. sillimani, Oxyrhina sillimani, Oxyrhina sillimanii
Original description species: (GIBBES, 1847)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Isurus woodsii (1)
(M’COY IN TENISON-WOODS, 1862)
Original description species: (M’COY IN TENISON-WOODS, 1862)
Genus: Isurus RAFINESQUE, 1810
Family: Lamnidae BONAPARTE, 1835
Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Itapyrodus punctatus (6)
SILVA SANTOS, 1990
Original description species: SILVA SANTOS, 1990
Genus: Itapyrodus SILVA SANTOS, 1990
Family: Petalodontidae NEWBERRY & WORTHEN, 1866
Order: Petalodontiformes
Subclass: Euchondrocephali
Ivanelepis costulata (1)
KARATAJUTE-TALIMAA, 1997
Original description species: KARATAJUTE-TALIMAA, 1997
Genus: Ivanelepis KARATAJUTE-TALIMAA, 1997
Family: incert. fam.
Order: incert. sedis
Subclass: Elasmobranchii
Ixobatis mucronata (5)
(ARAMBOURG, 1952)
Synonyms: Raja mucronata
Original description species: (ARAMBOURG, 1952)
Genus: Ixobatis NOUBHANI & CAPPETTA, 1995
Family: incert. fam.
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii