Abstract
The role of the extinct giant-toothed white sharkCarcharodon megalodon (Agassiz) in the Caribbean Neogene is discussed based on new evidence of predation on cetaceans from the Lower Pliocene Paraguaná Formation in Venezuela. Large sharks have occupied the highest trophic level in the marine environment. However, based on the recovery of a giant white shark tooth piercing a cetacean lumbar vertebra, the predator-prey relationship is discussed under the hypothesis of initial shark attack, subsequent floating transport of the cetacean carcass, and scavenging prior to deposition on the bottom. The scarce Caribbean fossil records of both giant-toothed sharks and cetaceans suggest that these species were transients during the Pliocene on the Venezuelan coast.
Kurzfassung
Die Rolle des ausgestorbenen RiesenweißhaiesCarcharodon megalodon (AGASSIZ) im Neogen der Karibik wird anhand eines neuen Predationsbefundes aus der unter-pliozänen Paraguaná-Formation in Venezuela diskutiert. Große Haie haben die höchste trophische Ebene im marinen Milieu besetzt. Hier wird ein Zahn eines Riesenweißhaies dokumentiert, der noch in einem Lumbarwirbel eines Wales steckt, was für ein Räuber-Beute-Verhältnis spricht. Die Befunde sprechen für einen Angriff des Räubers, gefolgt von Transport des Walkadavers, Aasfressen und schließlich Ablagerung am Boden des Meeres. Riesenweißhaie und Cetaceen waren im Pliozän in den Küstenregionen von Venezuela vorhanden.
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Aguilera, O.A., García, L. & Cozzuol, M.A. Giant-toothed white sharks and cetacean trophic interaction from the Pliocene Caribbean Paraguaná Formation. Paläont. Z. 82, 204–208 (2008). https://doi.org/10.1007/BF02988410
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DOI: https://doi.org/10.1007/BF02988410