Gladioserratus

{{Short description|Extinct genus of sharks}}

{{automatic taxobox

| fossil_range = {{fossil range|Valanginian|Danian|latest=Early Eocene}} Possible Ypresian record Jan S. Adolfssen; David J. Ward (2015). "Neoselachians from the Danian (Early Paleocene) of Denmark" (PDF). Acta Palaeontologica Polonica. 60 (2): 313–338. doi:10.4202/app.2012.0123

| image =

| taxon = Gladioserratus

| authority = Underwood et al., 2011

}}

Gladioserratus is an extinct genus of cow shark. It contains three species:{{cite journal |author1=Charlie J. Underwood |author2=Anjali Goswami |author3=G. V. R. Prasad |author4=Omkar Verma |author5=John J. Flynn |year=2011 |title=Marine vertebrates from the 'middle' Cretaceous (early Cenomanian) of South India |journal=Journal of Vertebrate Paleontology |volume=31 |issue=3 |pages=539–552 |doi=10.1080/02724634.2011.574518|bibcode=2011JVPal..31..539U |s2cid=129106454 }}{{cite web

|url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=186562

|title=Gladioserratus

|publisher=Paleobiology Database

|access-date=January 31, 2012

}}{{cite journal |author1=Guillaume Guinot |author2=Henri Cappetta |author3=Sylvain Adnet |year=2014 |title=A rare elasmobranch assemblage from the Valanginian (Lower Cretaceous) of southern France |journal=Cretaceous Research |volume=48 |pages=54–84 |doi=10.1016/j.cretres.2013.11.014 |bibcode=2014CrRes..48...54G }}

• Gladioserratus aptiensis Pictet, 1865
• Gladioserratus magnus Underwood, Goswami, Prasad, Verma & Flynn, 2011
• Gladioserratus dentatus Guinot, Cappetta & Adnet, 2014

The authors of its description considered it to be an exclusively Cretaceous genus, containing species living from Hauterivian to Cenomanian. 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 at Faxe, 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.{{cite journal |author1=Jan S. Adolfssen |author2=David J. Ward |year=2015 |title=Neoselachians from the Danian (Early Paleocene) of Denmark |journal=Acta Palaeontologica Polonica |volume=60 |issue=2 |pages=313–338 |doi=10.4202/app.2012.0123 |url=http://curis.ku.dk/ws/files/154526274/Adolfssen_2015_Neoselachians_from_the_Danian.pdf |doi-access=free }}