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Tooth morphology elucidates shark evolution across the end-Cretaceous mass extinction
Tooth morphology elucidates shark evolution across the end-Cretaceous mass extinction Mohamad Bazzi, Nicolás E. Campione, Per E. Ahlberg, Henning Blom, Benjamin P. Kear ABSTRACT: Sharks (Selachimorpha) are iconic marine predators that have survived multiple mass extinctions over geologic time. Their prolific fossil record is represented mainly by isolated shed teeth, which provide the basis for
Stable Isotope Analysis of Juvenile White Sharks Inside a Nursery Area
Stable Isotope Analysis of Juvenile White Sharks Inside a Nursery Area Reveals Foraging in Demersal-Inshore Habitats and Trophic Overlap With Sympatric Sharks Emiliano García-Rodríguez, Sharon Z. Herzka, Oscar Sosa-Nishizaki, Christopher G. Lowe, John B. O’Sullivan ABSTRACT: Knowledge about top predators’ trophic ecology is crucial for defining their role in ecosystems, understanding habitat preferences, characterizing life
Genomic assessment of global population structure in the tiger shark
Genomic assessment of global population structure in a highly migratory and habitat versatile apex predator, the tiger shark (Galeocerdo cuvier) Andrea M Bernard, Kimberly A Finnegan, Paulina Pavinski Bitar, Michael J Stanhope, Mahmood S Shivji ABSTRACT: Understanding the population dynamics of highly mobile, widely distributed, oceanic sharks, many of which are overexploited, is necessary to