ArticlePloS one2017
Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 47 citations in OpenAlex.
- Skeletons of swiftly swimming sharks: Three-dimensional analysis of lamniform vertebral morphology and mineral architecture.Journal of anatomy · 2026Article
- Ecological interactions and genomic innovation fueled the evolution of ray-finned fish endothermy.Science advances · 2025Article
- Reassessment of the possible size, form, weight, cruising speed, and growth parameters of the extinct megatooth shark,Palaeontologia electronica (Online) · 2025Article
- Cautionary tales on the use of proxies to estimate body size and form of extinct animals.Ecology and evolution · 2024Article
- Fossil marine vertebrates (Chondrichthyes, Actinopterygii, Reptilia) from the Upper Cretaceous of Akkermanovka (Orenburg Oblast, Southern Urals, Russia).Cretaceous research · 2024Article
- White shark comparison reveals a slender body for the extinct megatooth shark,Palaeontologia electronica (Online) · 2024Article
- Centralized red muscle inBiology letters · 2023Article
- Dental geochemistry reveals thermoregulation in the Neogene ocean's most infamous superpredator.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Endothermic physiology of extinct megatooth sharks.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Postcranial disparity of galeaspids and the evolution of swimming speeds in stem-gnathostomes.National science review · 2023Article
- Evolutionary analysis of swimming speed in early vertebrates challenges the 'New Head Hypothesis'.Communications biology · 2022Article
- The extinct sharkScience advances · 2022Article
- Cenozoic megatooth sharks occupied extremely high trophic positions.Science advances · 2022Article
- Biomechanical insights into the dentition of megatooth sharks (Lamniformes: Otodontidae).Scientific reports · 2021Article
- Use of nursery areas by the extinct megatooth sharkBiology letters · 2020Article
- Body dimensions of the extinct giant shark Otodus megalodon: a 2D reconstruction.Scientific reports · 2020Article
- The evolution of mechanisms involved in vertebrate endothermy.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Review
- Climate cooling and clade competition likely drove the decline of lamniform sharks.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
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1 author at 1 institution in 1 country.
Funding
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Abstract
Otodontids include some of the largest macropredatory sharks that ever lived, the most extreme case being Otodus (Megaselachus) megalodon. The reasons underlying their gigantism, distribution patterns and extinction have been classically linked with climatic factors and the evolution, radiation and migrations of cetaceans during the Paleogene. However, most of these previous proposals are based on the idea of otodontids as ectothermic sharks regardless of the ecological, energetic and body size constraints that this implies. Interestingly, a few recent studies have suggested the possible existence of endothermy in these sharks thus opening the door to a series of new interpretations. Accordingly, this work proposes that regional endothermy was present in otodontids and some closely related taxa (cretoxyrhinids), playing an important role in the evolution of gigantism and in allowing an active mode of live. The existence of regional endothermy in these groups is supported here by three different approaches including isotopic-based approximations, swimming speed inferences and the application of a novel methodology for assessing energetic budget and cost of swimming in extinct taxa. In addition, this finding has wider implications. It calls into question some previous paleotemperature estimates based partially on these taxa, suggests that the existing hypothesis about the evolution of regional endothermy in fishes requires modification, and provides key evidence for understanding the evolution of gigantism in active macropredators.
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