''Gladioserratus'' is an
extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
genus of
cow shark. It contains three species:
*''
Gladioserratus aptiensis''
Pictet, 1865
*''
Gladioserratus magnus''
Underwood, Goswami, Prasad, Verma & Flynn, 2011
*''
Gladioserratus dentatus
''Gladioserratus'' is an extinct genus of cow shark. It contains three species:
*'' Gladioserratus aptiensis'' Pictet, 1865
*'' Gladioserratus magnus'' Underwood, Goswami, Prasad, Verma & Flynn, 2011
*'' Gladioserratus dentatus'' Guinot, Cappe ...
''
Guinot, Cappetta & Adnet, 2014
The authors of its description considered it to be an exclusively
Cretaceous genus, containing species living from
Hauterivian to
Cenomanian
The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...
.
Subsequently the species ''G. dentatus'' was described from the
Valanginian of
France.
Teeth described by Adolfssen and Ward (2015), collected from the middle
Danian Faxe Formation
Faxe or Fakse is a town on the island of Zealand in eastern Denmark. It is located in Faxe Municipality in Region Zealand. The town is most known for the Faxe Brewery, Royal Unibrew, a relatively large brewery producing a range of beer and so ...
at
Faxe
Faxe or Fakse is a town on the island of Zealand in eastern Denmark. It is located in Faxe Municipality in Region Zealand. The town is most known for the Faxe Brewery, Royal Unibrew, a relatively large brewery producing a range of beer and soft dr ...
,
Denmark, extend the temporal range of the genus to
Paleocene; according to the authors, the species ''"Notorynchus" serratissimus'' Agassiz (1843) should probably be assigned to the genus ''Gladioserratus'' as well, which, if confirmed, would further extended the temporal range of the genus to the early
Eocene.
References
{{Taxonbar, from=Q5566300
Hexanchidae
Cretaceous sharks
Prehistoric fish of Europe
Shark genera
Fossil taxa described in 2011