{{Short description|Extinct genus of sharks}} {{Automatic taxobox | fossil_range = {{fossil range|41.2|11.63|PS=Middle Eocene–Middle Miocene}} | image = Austromola angerhoferi.jpg | image_caption = Restoration, with ''Austromola'' | taxon = Keasius | authority = Welton, 2013<ref name="Welton 2013">{{cite journal|last=Welton |first=B.J. |year=2013 |title=A new archaic basking shark (Lamniformes: Cetorhinidae) from the late Eocene of western Oregon, U.S.A., and description of the dentition, gill rakers and vertebrae of the recent basking shark ''Cetorhinus maximus'' (Gunnerus) |journal=New Mexico Museum of Natural History and Science Bulletin |volume=58 |pages=1–48 |url=https://nmdigital.unm.edu/digital/collection/bulletins/id/1526}}</ref> | type_species = †'''''Keasius taylori''''' | type_species_authority = Welton, 2013 | subdivision_ranks = Other species | subdivision = *†''Keasius parvus'' <br/><small>(Leriche, 1908)<ref name="Leriche 1908">{{cite journal|last=Leriche |first=M. |year=1908 |title=Sur un appareil fanonculaire de ''Cetorhinus'' trouvé à l'état fossile dans le Pliocène d'Anvers |journal=Comptes rendus hebdomadaires des séances de l'Académie des sciences |volume=146 |issue=16 |pages=875–878 |url=https://www.biodiversitylibrary.org/item/28088#page/945/mode/1up}}</ref></small> *†''Keasius septemtrionalis'' <br/><small>Reinecke, von der Hocht, & Dufraing, 2015<ref name="Reinecke et al. 2015">{{cite journal|last1=Reinecke |first1=T. |last2=von der Hocht |first2=F. |last3=Dufraing |first3=L. |year=2015 |title=Fossil basking shark of the genus ''Keasius'' (Lamniforme, Cetorhinidae) from the boreal North Sea Basin and Upper Rhine Graben: evolution of dental characteristics from the Oligocene to late Middle Miocene and description of two new species |journal=Palaeontos |volume=28 |pages=39–98 }}</ref></small> *†''Keasius rhenanus'' <br/><small>Reinecke, von der Hocht, & Dufraing, 2015</small> | synonyms = {{collapsible list|title=Genus synonymy| *"Praecetorhinus" <br/><small>von der Hocht, 1978 (''nomen nudum'')<ref name="von der Hocht 1978">{{cite journal|last=von der Hocht |first=F. |year=1978 |title=Bestandsaufnahme der Chondrichthyes-Fauna des unteren Meeressandes (Oligozän, Rupelium) in Mainzer Becken |journal=Mededelingen van de Werkgroep voor Tertiaire en Kwartaire Geologie |volume=15 |issue=3 |pages=77–83 |url=https://natuurtijdschriften.nl/pub/521111}}</ref></small>}} {{collapsible list|title=Species synonymy| {{collapsible list|title=''K. parvus''| * ''Cetorhinus parvus'' <br/><small>Leriche, 1908</small>}} }} }}
'''''Keasius''''' is an extinct genus of basking sharks that lived during the Cenozoic. It contains four valid species, which have been found in North America, Europe, and Antarctica.<ref name="Welton 2013"/><ref name="Reinecke et al. 2015"/>
==References== {{Reflist|}}
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Category:Cetorhinidae Category:Prehistoric shark genera Category:Cenozoic sharks
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