Edmontosaurus Track Alamosaurus Anatomy: This well-armored animal had

Anatomy: This well-armored animal had heavy

five-toed feet with long digits

it is assumed that Confuciusornis colonized along the lake

Desmoinesian Stage (= Westphalian D)

Brule Formation Age: Oligocene

Edmontosaurus Track Alamosaurus Anatomy: This well-armored animal hadThis track was probably made by the hind foot Edmontosaurus. Edmontosaurus was one of the last non avian dinosaurs, and lived alongside dinosaurs like Triceratops and Tyrannosaurus shortly before the CretaceousPaleogene extinction event that occurred 66 million years ago. Some 66 million years ago a dinosaur stepped into some soft mud leaving its foot impression, the negative. Over time the track was buried by other sediments of a different texture