The first articulated skeletons of enigmatic Late Cretaceous billfish-like actinopterygians.
| Autor: | El Hossny T; Department of Earth Sciences, University of Geneva, Rue des Maraîchers 13, 1205 Geneva, Switzerland.; Département de Géologie et de Paléontologie, Muséum d'Histoire Naturelle de la Ville de Genève, CP 6434, 1211 Geneva 6, Switzerland., Cavin L; Département de Géologie et de Paléontologie, Muséum d'Histoire Naturelle de la Ville de Genève, CP 6434, 1211 Geneva 6, Switzerland., Kaplan U; Eichenallee 141, 33332 Gütersloh, Germany., Schwermann AH; LWL-Museum für Naturkunde Westfälisches Landesmuseum mit Planetarium, Sentruper Strasse 285, 48161 Münster, Germany., Samankassou E; Department of Earth Sciences, University of Geneva, Rue des Maraîchers 13, 1205 Geneva, Switzerland., Friedman M; Museum of Paleontology and Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Royal Society open science [R Soc Open Sci] 2023 Dec 06; Vol. 10 (12), pp. 231296. Date of Electronic Publication: 2023 Dec 06 (Print Publication: 2023). |
| DOI: | 10.1098/rsos.231296 |
| Abstrakt: | Only few candidates of Mesozoic fishes with a similar body plan and ecological niche to the modern billfishes are suggested as their analogues. Several specimens were recovered from Cenomanian deposits in Germany and Lebanon and display a billfish-like fusiform body with elongated premaxillae. They are found close to the plethodids and show a unique combination of characters (rostrum pointed and extremely elongated, double articular head of the quadrate, anteroposteriorly elongated abdominal centra indicating a slender body and different types of scales on the body) allowing their inclusion in a new genus. Two ' Protosphyraena ' species are also assigned to this new genus. This fish can be considered as an ecological analogue to the extant xiphioids sharing their feeding habits. This fish was abundant and roamed, as an apex predator, the Central Tethys and the Boreal realms during the Cenomanian. Competing Interests: The authors declare no conflict of interest. (© 2023 The Authors.) |
| Databáze: | MEDLINE |
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