// Workers AI · dad joke modeWhat did Keasius say to his date? "You're a key to my heart.
| Keasius Temporal range: | |
|---|---|
 | |
| Restoration, with Austromola | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Division: | Selachii |
| Order: | Lamniformes |
| Family: | Cetorhinidae |
| Genus: | †Keasius Welton, 2013[1] |
| Type species | |
| †Keasius taylori Welton, 2013 | |
| Other species | |
| Synonyms | |
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Genus synonymy
Species synonymy
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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.[1][3][5]
Palaeobiology
[edit]A 2026 study analyzed a regurgitalite produced by either a lamniform or a hexanchid shark which contained remains attibuted to K. cf. septemtrionalis from the Miocene (Burdigalian) of Slovenia, extending it's known range to the southeastern central paratethys ocean.[5]
References
[edit]- 1 2 Welton, B.J. (2013). "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)". New Mexico Museum of Natural History and Science Bulletin. 58: 1–48.
- ↑ Leriche, M. (1908). "Sur un appareil fanonculaire de Cetorhinus trouvé à l'état fossile dans le Pliocène d'Anvers". Comptes rendus hebdomadaires des séances de l'Académie des sciences. 146 (16): 875–878.
- 1 2 Reinecke, T.; von der Hocht, F.; Dufraing, L. (2015). "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". Palaeontos. 28: 39–98.
- ↑ von der Hocht, F. (1978). "Bestandsaufnahme der Chondrichthyes-Fauna des unteren Meeressandes (Oligozän, Rupelium) in Mainzer Becken". Mededelingen van de Werkgroep voor Tertiaire en Kwartaire Geologie. 15 (3): 77–83.
- 1 2 Gašparič, Rok; Kovalchuk, Oleksandr; Mazuch, Martin; Košťák, Martin; Hitij, Tomaž; Kočová Veselská, Martina; Kočí, Tomáš; Barkaszi, Zoltán (2026-07-20). "An Early Miocene regurgitalite containing basking shark remains from Slovenia: insight into cetorhinid paleoecology of the Central Paratethys". Swiss Journal of Palaeontology. 145: 839–849. doi:10.3897/sjp.145.203557. ISSN 1664-2384.
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