Pikaia gracilens, 2 specimens from the Burgess Shale, replica Triceratops although occasionally central markings are

although occasionally central markings are found that could represent a mouth

This large Carnosaur dinosaur track was found in a Utah coal mine

000 pounds

probably represents low lying areas or very shallow tidal expanses

Pikaia gracilens, 2 specimens from the Burgess Shale, replica Triceratops although occasionally central markings areA primitive chordate from the Burgess Shale More than 1 2 billion years old, the fossils of the Burgess Shale fauna preserve for us an intriguing glimpse of early animal life on Earth. These fossils are named after a Cambrian rock formation (the Burgess Shale) that is located in the western Canadian Rockies. They were first discovered there in 1909 by Charles D. Walcott, then Secretary of the Smithsonian Institution. Living among the variety of