FOSSILS SPECIMEN: THYREOPHORAN DINOSAURS

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: Ornithischia – Suborder: Thyreophora “shield bearers”

(armored dinosaurs)

Lower Jurassic to Upper Cretaceous

Stegosaurus tail spike (Cast)

Upper Jurassic

North America