635 Million-Year-Old Animal Traces Discovered
New research in the South Oman Salt Basin shows evidence of animal life dating back much further than the first appearance of other significant life forms.
Chemical traces of the minute marine sponges, called demosponges were observed by a research team led by the University of California, Riverside geochemist Dr. Gordon D. Love. Desmosponges include the species most consumsers are familiar with: the bath sponge. These over 500 million-year-old sponges however, were probably much smaller due to a lack of oxygen available during their geological period. The fact that they existed 200 million years before plants appeared on land, shows just how very old they are.
