Articles | Volume 19, issue 10
Biogeosciences, 19, 2671–2681, 2022
Biogeosciences, 19, 2671–2681, 2022
Research article
30 May 2022
Research article | 30 May 2022

Intra-skeletal variability in phosphate oxygen isotope composition reveals regional heterothermies in marine vertebrates

Nicolas Séon et al.

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Cited articles

Amiot, R., Göhlich, U. B., Lécuyer, C., De Muizon, C., Cappetta, H., Fourel, F., Héran, M.-A., and Martineau, F.: Oxygen isotope compositions of phosphate from Middle Miocene–Early Pliocene marine vertebrates of Peru, Palaeogeogr. Palaeocl., 264, 85–92, 2008. 
Atkins, A., Dean, M. N., Habegger, M.-L., Motta, P. J., Ofer, L., Repp, F., Shipov, A., Weiner, S., Currey, J. D., and Shahar, R.: Remodeling in bone without osteocytes: billfish challenge bone structure–function paradigms, P. Natl. Acad. Sci. USA, 111, 16047–16052, 2014. 
Barrick, R. E.: Isotope paleobiology of the vertebrates: ecology, physiology, and diagenesis, Paleontol. Soc. Pap., 4, 101–137, 1998. 
Barrick, R. E. and Showers, W. J.: Thermophysiology of Tyrannosaurus rex: evidence from oxygen isotopes, Science, 265, 222–224, 1994. 
Barrick, R. E. and Showers, W. J.: Oxygen isotope variability in juvenile dinosaurs (Hypacrosaurus): evidence for thermoregulation, Paleobiology, 21, 552–560, 1995. 
Short summary
We analysed the oxygen isotope composition of bones and teeth of four marine species possessing regional heterothermies. We observed a consistent link between oxygen isotope composition and temperature heterogeneities recorded by classical methods. This opens up new perspectives on the determination of the thermoregulatory strategies of extant marine vertebrates where conventional methods are difficult to apply, but also allows us to investigate thermophysiologies of extinct vertebrates.
Final-revised paper