Extinct - valid species | Species

Xenacanthus decheni (29)
(GOLDFUSS, 1847)

Synonyms: Orthacanthus dechenii, Pleuracanthus decheni
Original description species: (GOLDFUSS, 1847)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus elegans (4)
(TRAQUAIR, 1881)

Synonyms: Pleuracanthus elegans
Original description species: (TRAQUAIR, 1881)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus gaudryi (2)
(BRONGNIART & SAUVAGE, 1888)

Synonyms: Pleuracanthus gaudryi
Original description species: (BRONGNIART & SAUVAGE, 1888)
Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus humbergensis (5)
HAMPE, 1994

Original description species: HAMPE, 1994

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus laevissimus (9)
(AGASSIZ, 1837)

Synonyms: Pleuracanthus laevissimus
Original description species: (AGASSIZ, 1837)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus latus (5)
(NEWBERRY & WORTHEN, 1866)

Synonyms: Diplodus latus, Orthacanthus cf. latus
Original description species: (NEWBERRY & WORTHEN, 1866)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus meisenheimensis (10)
HAMPE, 1994

Original description species: HAMPE, 1994

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus oelbergensis (2)
(FRITSCH, 1890)

Original description species: (FRITSCH, 1890)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus ossiani (2)
JOHNSON, 1999

Synonyms: Xenacanthus cf. ossiani
Original description species: JOHNSON, 1999

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus ovalis (8)
(FRITSCH, 1890)

Synonyms: Pleuracanthus ovalis
Original description species: (FRITSCH, 1890)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus parallelus (12)
(FRITSCH, 1890)

Synonyms: Pleuracanthus parallelus, Xenacanthus paralellus
Original description species: (FRITSCH, 1890)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus ragonhai (1)
PAULIV, DIAS, SEDOR & RIBEIRO, 2014

Original description species: PAULIV, DIAS, SEDOR & RIBEIRO, 2014

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus remigiusbergensis (6)
HAMPE, 1994

Original description species: HAMPE, 1994

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus slaughteri (2)
JOHNSON, 1999

Original description species: JOHNSON, 1999

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus tenuis (3)
(WOODWARD, 1889)

Synonyms: Diplodus tenuis
Original description species: (WOODWARD, 1889)

Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenacanthus tocantinsensis (2)
SANTOS & SALGADO, 1970

Original description species: SANTOS & SALGADO, 1970
Genus: Xenacanthus BEYRICH, 1848

Family: Xenacanthidae FRITSCH, 1889
Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xenosynechodus egloni (5)
GLIKMAN, 1980

Original description species: GLIKMAN, 1980

Genus: Xenosynechodus GLIKMAN, 1980

Family: Xenosynechodontidae GLICKMAN, 1980

Order: Xenacanthiformes
Superorder: Xenacanthimorpha
Subclass: Elasmobranchii

Xinjiangichthys pluridentatus (2)
WANG, ZHANG, WANG & ZHU, 1998

Original description species: WANG, ZHANG, WANG & ZHU, 1998

Genus: Xinjiangichthys WANG, ZHANG, WANG & ZHU, 1998

Family: Shiqianolepidae SANSOM, ALDRIDGE & SMITH, 2000
Suborder: KARATAJUTE-TALIMAA, NOVITSKAYA, ROZMAN & SODOV, 1990
Order: Mongolepidida

Xinjiangichthys tarimensis (1)
WANG, ZHANG, WANG & ZHU, 1998

Original description species: WANG, ZHANG, WANG & ZHU, 1998

Genus: Xinjiangichthys WANG, ZHANG, WANG & ZHU, 1998

Family: Shiqianolepidae SANSOM, ALDRIDGE & SMITH, 2000
Suborder: KARATAJUTE-TALIMAA, NOVITSKAYA, ROZMAN & SODOV, 1990
Order: Mongolepidida

Xiphodolamia ensis (16)
LEIDY, 1877

Synonyms: Xyphodolamia ensis
Original description species: LEIDY, 1877

Genus: Xiphodolamia LEIDY, 1877

Family: Lamnidae MÜLLER & HENLE, 1838

Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Xiphodolamia eocaena (26)
(WOODWARD, 1889)

Synonyms: Carcharias (Scoliodon) eocaenus, Isurus eocaenus, Oxyrhina eocaena, Oxyrhina zignoi, Rhizoprionodon eocaenus, Xenodolamia eocaena, Xiphodolamia eocenica, Xiphodolamia zignoi
Original description species: (WOODWARD, 1889)

Genus: Xiphodolamia LEIDY, 1877

Family: Lamnidae MÜLLER & HENLE, 1838

Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Xiphodolamia serrata (3)
ADNET & HOSSEINZADEH & ANTUNES & BALBINO & KOZLOV & CAPPETTA, 2009

Original description species: ADNET & HOSSEINZADEH & ANTUNES & BALBINO & KOZLOV & CAPPETTA, 2009

Genus: Xiphodolamia LEIDY, 1877

Family: Lamnidae MÜLLER & HENLE, 1838

Order: Lamniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii

Xystracanthus arcuatus (1)
LEIDY, 1859

Original description species: LEIDY, 1859

Genus: Xystracanthus LEIDY, 1859

Subclass: Elasmobranchii

Xystrogaleus cappettai (3)
ADNET, 2006

Original description species: ADNET, 2006

Genus: Xystrogaleus ADNET, 2006

Family: Triakidae GRAY, 1851

Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii