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.