Study of the Braincase Anatomy of Alioramus altai
Author Information
Author(s): Bever Gabe S., Brusatte Stephen L., Balanoff Amy M., Norell Mark A.
Primary Institution: Department of Geology and Geophysics, Yale University
Hypothesis
How does the internal braincase anatomy of Alioramus altai inform our understanding of tyrannosauroid evolution?
Conclusion
The study reveals previously unrecognized evolutionary complexity and morphological plasticity in the transition from basal theropod neuroanatomy to that of maniraptorans.
Supporting Evidence
- The study identifies derived characters that strengthen the diagnosis of Alioramus altai as a unique species.
- It discusses the integration of paleontology with variability studies to understand morphological transformations.
- The findings suggest that heterochrony may have played a critical role in driving patterns of endocranial variability.
Takeaway
This study looks at the brain of a dinosaur called Alioramus altai to learn how it changed over time and what that means for understanding dinosaur evolution.
Methodology
The internal braincase anatomy was studied using high-resolution computed tomography.
Limitations
The study is based on a single specimen, which may not represent the full variability within the species.
Digital Object Identifier (DOI)
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