ArticleCommunications biology2022
Functional and ecomorphological evolution of orbit shape in mesozoic archosaurs is driven by body size and diet.
Article in Communications biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Modelling compressive loading in large-bodied mammals reveals distinct biomechanical strategies in proboscidean humeri.Journal of anatomy · 2026Article
- Dinosaur skull geometry does not follow functional optimization trends but facilitates adaptability.iScience · 2025Article
- Building a predator: macroevolutionary patterns in the skull of abelisaurid dinosaurs.Proceedings. Biological sciences · 2025Article
- Estimation of maximum body size in fossil species: A case study usingEcology and evolution · 2024Article
- Morphological disparity and structural performance of the dromaeosaurid skull informs ecology and evolutionary history.BMC ecology and evolution · 2024Article
- Cranial functional specialisation for strength precedes morphological evolution in Oviraptorosauria.Communications biology · 2024Article
- Functional and ecomorphological evolution of orbit shape in mesozoic archosaurs is driven by body size and diet.Communications biology · 2022Article
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Abstract
The orbit is one of several skull openings in the archosauromorph skull. Intuitively, it could be assumed that orbit shape would closely approximate the shape and size of the eyeball resulting in a predominantly circular morphology. However, a quantification of orbit shape across Archosauromorpha using a geometric morphometric approach demonstrates a large morphological diversity despite the fact that the majority of species retained a circular orbit. This morphological diversity is nearly exclusively driven by large (skull length > 1000 mm) and carnivorous species in all studied archosauromorph groups, but particularly prominently in theropod dinosaurs. While circular orbit shapes are retained in most herbivores and smaller species, as well as in juveniles and early ontogenetic stages, large carnivores adopted elliptical and keyhole-shaped orbits. Biomechanical modelling using finite element analysis reveals that these morphologies are beneficial in mitigating and dissipating feeding-induced stresses without additional reinforcement of the bony structure of the skull.
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