1. New tomographic contribution to characterizing mesosaurid congenital scoliosis.
- Author
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Szczygielski T, Dróżdż D, Surmik D, Kapuścińska A, and Rothschild BM
- Subjects
- Animals, Brazil, Ecosystem, Fossils anatomy & histology, Fossils history, History, Ancient, Scoliosis congenital, Scoliosis history, Spine abnormalities, Spine diagnostic imaging, Tomography, X-Ray Computed, Reptiles abnormalities, Scoliosis veterinary
- Abstract
The presence of a pathology in the vertebral column of the early Permian mesosaurid specimen ZPAL R VII/1, being one of the oldest amniotic occurrences of congenital scoliosis caused by a hemivertebra, was recently recognized. Here we provide CT data to further characterize the phenomenon. The affected hemivertebra is wedged (incarcerated) between the preceding and succeeding vertebrae. The neural canal is misshapen but continuous and the number of dorsal ribs on each side of the specimen corresponds with the number of the vertebrae, documenting its congenital (homeobox-related) derivation., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2019
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