New observations on the anatomy and paleobiology of theEocene requiem shark †Eogaleus bolcensis (Carcharhiniformes,Carcharhinidae) from Bolca Lagerstätte, Italy
- Autor(en)
- Giuseppe Marrama, Giorgio Carnevale, Jürgen Kriwet
- Abstrakt
Here we provide new information about the anatomy of the extinct shark †Eogaleusbolcensis from the early Eocene Bolca Konservat-Lagerstätte. The combination of mor-phological and dental characters of the three known articulated specimens and a singleisolated tooth collected from the Pesciara and Monte Postale sites (e.g., head bulky withrounded snout, pectoral fins of semiplesodic type, cutting-clutching dentition, dermal den-ticles shell-shaped and of drag-reducing type, caudal fin accounting for one fourth of the entire body length, 135–153 vertebrae) supports the assignment of †Eogaleus to the fam-ily Carcharhinidae and allows us to confirm definitively its distinct taxonomic status fromthe sympatric carcharhiniform, the triakid †Galeorhinus cuvieri. Moreover, the analysis ofthe dermal denticle morphology and the size and maturity age estimates of the studiedspecimens provide new paleobiological information about †Eogaleus, suggesting a closeassociation of this small top predator with the tropical shallow-water marine contexthypothesized for the Bolca paleobiotopes.
- Organisation(en)
- Institut für Paläontologie
- Externe Organisation(en)
- Università degli Studi di Torino
- Journal
- Academie des Sciences. Comptes Rendus. Palevol
- Band
- 17
- Seiten
- 443-459
- Anzahl der Seiten
- 17
- ISSN
- 1631-0683
- DOI
- https://doi.org/10.1016/j.crpv.2018.04.005
- Publikationsdatum
- 2018
- Peer-reviewed
- Ja
- ÖFOS 2012
- 106043 Systematische Zoologie, 105118 Paläontologie
- Schlagwörter
- ASJC Scopus Sachgebiete
- Palaeontology
- Sustainable Development Goals
- SDG 14 – Leben unter Wasser
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/77e9f972-f8fa-4e15-9157-6693d1c537bb