Palaeontology: Muddy tetrapod origins
Abstract
The tracks left by organisms are among the most difficult of fossils to interpret. But just such evidence puts debate about the origins of four-limbed vertebrates (which include ourselves) on a changed footing.
- Publication:
-
Nature
- Pub Date:
- January 2010
- DOI:
- 10.1038/463040a
- Bibcode:
- 2010Natur.463...40J