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Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
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Evolution: Much on the Menu for Ancient Crocs.

Roger B J Benson1, Pedro L Godoy2

  • 1Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK.

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Summary
This summary is machine-generated.

Extinct crocodylians frequently evolved herbivory, developing complex teeth similar to mammals. This challenges the notion of crocodylians as solely carnivorous ancestors.

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Area of Science:

  • Paleontology
  • Evolutionary Biology
  • Vertebrate Zoology

Background:

  • Crocodylians are currently obligate carnivores.
  • Extinct relatives of modern crocodylians (pseudosuchians) are known to have possessed diverse diets.
  • Understanding dietary evolution in extinct pseudosuchians is key to reconstructing early archosaurian ecosystems.

Purpose of the Study:

  • To investigate the frequency and patterns of herbivory evolution within extinct pseudosuchian clades.
  • To analyze dental complexity in extinct pseudosuchians and compare it to mammalian herbivores.

Main Methods:

  • Phylogenetic analysis of dietary adaptations in extinct pseudosuchians.
  • Comparative dental morphology studies using fossil evidence.
  • Paleoecological reconstructions based on dietary inferences.

Main Results:

  • Herbivory evolved independently multiple times across various pseudosuchian lineages.
  • Dental complexity in herbivorous pseudosuchians reached levels comparable to those seen in mammals.
  • Dietary niche partitioning was significant in extinct pseudosuchian faunas.

Conclusions:

  • The dietary plasticity of extinct pseudosuchians was far greater than previously assumed.
  • Convergent evolution of herbivory and complex dental structures occurred frequently in this group.
  • These findings reshape our understanding of early archosaur evolution and ecological diversification.