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May 1, 2026

Evolutionary decoupling between cranial shape and size underlies divergent evolutionary pathways in Cretaceous apex and meso-predator theropods.

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Authors

EPEnzo E. S. Pereyra

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Overview

Randomized trial reveals distinct evolutionary paths of apex and meso-predators in Cretaceous theropods, suggesting ecological impact on morphology.

Key Points

  • The study aims to investigate how cranial shape and size influenced the evolutionary pathways of apex and meso-predator theropods during the Cretaceous period.
  • Analyzed cranial shape and size across different lineages of Cretaceous theropods (Carcharodontosauria, Abelisauridae, Coelurosauria) using phylogenetic comparative methods.
  • Explored morphological changes and adaptive strategies in the context of ecological pressures and evolutionary history.
  • Abelisaurids showed stability in body size but significant innovation in skull shape.
  • Carcharodontosaurids achieved large sizes while maintaining similar cranial forms.
  • Coelurosaurs displayed varied strategies, with significant cranial size increases in Late Cretaceous, indicating varied evolutionary pressures.

Cite This Study

Enzo E. S. Pereyra (2026) studied this question.

synapsesocial.com/papers/69f444d3967e944ac5567aa2https://doi.org/10.1038/s42003-026-10145-8
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