New and Ancient Trace Makers

+ See all authors and affiliations

Science  16 Jan 2009:
Vol. 323, Issue 5912, pp. 346-347
DOI: 10.1126/science.1168794

You are currently viewing the summary.

View Full Text


Trace fossils that are older than known animal fossils may have been formed by large unicellular organisms such as amoebas.

Related Content