Fossils are defined as any evidence of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung).

Phylum: Chordata – Class: Reptilia – Clade: Archosaur – Clade: Dinosauria – Order: Saurischia – Suborder: Sauropodomorpha “lizard foot form”

(long neck dinosaurs)

Upper Triassic to Upper Cretaceous


Camarsaurus Skull


Upper Jurassic

Morrison Formation, United States

Diplodocus Skull


Upper Jurassic

Morison Formation, United States

Dinosaur Gastrolith

(Stomach Stones)

Late Jurassic Period

Colorado to Utah, United States

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