Trace fossil
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A trace fossil, also called an ichnofossil, is a fossil record of biological activity by lifeforms, but not the preserved remains of the organism itself. Trace fossils contrast with body fossils, whic
Chirotherium footprints in a Triassic sandstone
The trackway Protichnites from the Cambrian, Blackberry Hill, central Wisconsin
Cross-section of mammoth footprints at The Mammoth Site, Hot Springs, South Dakota
Mesolimulus walchi fossil and track, a rare example of tracks and the creature that made them fossilized together
Ediacaran biota
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The Ediacaran biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period. These were enigmatic tubular and frond-shaped, mostly s
A diorama of the macroscopic organisms of the Avalon assemblage at the Smithsonian National Museum of Natural History.
Palaeontologist Guy Narbonne examining Ediacaran fossils in Newfoundland
Modern cyanobacterial-algal mat, salty lake on the White Sea seaside
A reconstruction of the Ediacaran biota at the Field Museum in Chicago