Geographical distribution patterns of Carcharocles megalodon over time reveal clues about extinction mechanisms

  title={Geographical distribution patterns of Carcharocles megalodon over time reveal clues about extinction mechanisms},
  author={Catalina Pimiento and Bruce J. MacFadden and Christopher F. Clements and Sara Varela and Carlos Jaramillo and Jorge V{\'e}lez‐Juarbe and Brian R. Silliman},
  journal={Journal of Biogeography},
Given its catastrophic consequences, the extinction of apex predators has long been of interest to modern ecology. Despite major declines, no present‐day species of marine apex predator has yet become extinct. Because of their vulnerability, understanding the mechanisms leading to their extinction in the past could provide insight into the natural factors that interact with human threats to drive their loss. We studied the geographical distribution patterns of the extinct macro‐predatory shark… 

When sharks nearly disappeared

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The modulating role of traits on the biogeographic dynamics of chondrichthyans from the Neogene to the present

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A previously unrecognized extinction event among marine megafauna during this time is identified, with extinction rates three times higher than in the rest of the Cenozoic, and with 36% of Pliocene genera failing to survive into the Pleistocene.

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Although shark teeth are abundant in the fossil record, their bodies are rarely preserved. Thus, our understanding of the anatomy of the extinct Otodus megalodon remains rudimentary. We used an

Trophic position of Otodus megalodon and great white sharks through time revealed by zinc isotopes

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The northward-flowing Humboldt Current hosts perpetually high levels of productivity along the western coast of South America. Here, we aim to elucidate the deep-time history of this globally

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Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks

  • H. Ferrón
  • Environmental Science, Geography
    PloS one
  • 2017
It is proposed 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.



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Dinosaur diversity and the rock record

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Patterns and ecosystem consequences of shark declines in the ocean.

It is shown that the high natural diversity and abundance of sharks is vulnerable to even light fishing pressure, and that large sharks can exert strong top-down forces with the potential to shape marine communities over large spatial and temporal scales.

Extinctions in ancient and modern seas.

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Comparison of evolutionary patterns among Late Cretaceous marine bivalves and gastropods during times of normal, background levels of extinction and during the end-Cretaceous mass extinction