Evolution of Sirenian Pachyosteosclerosis, a Model-case for the Study of Bone Structure in Aquatic Tetrapods

@article{Buffrnil2010EvolutionOS,
  title={Evolution of Sirenian Pachyosteosclerosis, a Model-case for the Study of Bone Structure in Aquatic Tetrapods},
  author={Vivian de Buffr{\'e}nil and Aurore Canoville and Ruggero D’Anastasio and Daryl Domning},
  journal={Journal of Mammalian Evolution},
  year={2010},
  volume={17},
  pages={101-120}
}
Osteosclerosis, or inner bone compaction, and pachyostosis, or outer hyperplasy of bone cortices (swollen bones), are typical features of tetrapods secondarily adapted to life in water. [] Key Result However, it subsequently regressed in some taxa that do not exhibit hyperplasic rib cortices. Osteosclerosis was only incipient in P. portelli. Its full development occurred later, by the end of the Eocene. These two structural specializations of bone are variably pronounced in extinct and extant sirenians, and…
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