The relationship between carbon dioxide and climate over millions of years has been a source of controversy. Fossilized liverwort leaves can help illuminate both temperature and atmospheric carbon dioxide levels from 200 to 60 million years ago.
References
Berner, R. A. & Kothavala, Z. Amer. J. Sci. 301, 182–204. (2001).
Crowley, T. J. & Berner, R. A. Science 292, 870–872 (2001).
Royer, D. L. Geochim. Cosmochim. Acta 70, 5665–5675 (2006).
Royer, D. L., Berner, R. A., Montanez, I. P., Tabor, N. J. & Beerling, D. J. GSA Today 14, 4–10 (2004).
Veizer, J., Goddéris, Y. & François, L. M. Nature 408, 698–701 (2000).
Boucot, A. J., Xu, C. & Scotese C. R . Paleontol. J. 38, 115–122 (2004).
Frakes, L. A., Francis, J. E. & Syktus, J. I. Climate modes of the Phanerozoic (Cambridge Univ. Press, Cambridge, UK, 1992).
Fletcher, B. J., Brentnall, S. J., Anderson, C. W., Berner, R. A. & Beerling D. J. Nature Geosci. 1, 43–48 (2008).
Wallmann, K. Geochem. Geophys. Geosyst. 5, doi:10.1029/2003GC000683 (2004).
Berner, R. A. Amer. J. Sci. 306, 295–302 (2006).
Wallmann, K. Geochim. Cosmochim. Acta 65, 3005–3025 (2001).
Riebesell, U. et al. Nature 450, 545–548 (2007).
Gradstein, F. M., Ogg, J. G. & Smith, A. G. A Geological Timescale (Cambridge Univ. Press, Cambridge, UK, 2004).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wallmann, K. Liverworts and all. Nature Geosci 1, 14–15 (2008). https://doi.org/10.1038/ngeo.2007.67
Issue Date:
DOI: https://doi.org/10.1038/ngeo.2007.67
- Springer Nature Limited
This article is cited by
-
Palaeodiversity and evolution in the Mesozoic world
Journal of Iberian Geology (2018)