The Paleontology of North America

Vertebrate Traces from North America

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Brontotheriid tracks
Brontotheriid tracks
© 2005 The Virtual Fossil Museum

Unknown lizard
Unknown lizard
© 2005 The Virtual Fossil Museum

"Anthracosaur"
"Anthracosaur"
© 2001 Richard Schrantz

What are Vertebrate Traces? Vertebrate traces include the impressions of activities such as feeding, burrowing, resting, walking, or crawling. Vertebrates living in the water, like whales, fish, crocodiles, mosasaurs, or ichthyosaurs, only rarely leave traces in sediments; however, they may leave feeding traces on their prey. Bite marks can be found on many fossils, such as ammonites and bivalves. Terrestrial vertebrates, such as dinosaurs, birds, amphibians, snakes, and many mammals, may leave footprints, bite marks, or even evidence of what they ate in the form of fossilized dung (coprolites). The oldest definitive vertebrate trace fossils are from the Carboniferous.

First known fossil occurrence: Carboniferous.

Last known fossil occurrence: Quaternary. This group has living relatives.

Fossils through time:
Choose a time period to see what life was like:

Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian