Theropod (dinosaur) Bird Track, positive Troodon It is of probable Jurassic

It is of probable Jurassic Age

Crinoids were major carbonate producing organisms during the Paleozoic and Mesozoic

a number of bones of the arms and especially the hand with all three fingers well-preserved

Struthiomimus differed from close relatives only in subtle aspects of anatomy

such as Ceratotherium (modern white rhinos)

Theropod (dinosaur) Bird Track, positive Troodon It is of probable JurassicThe study of fossilized footprints, Ichnology, has become an important branch of paleontology. Footprints are trace fossils. They are considered trace fossils because they contain no fossil material, only the impressions left by the animal which made them. It is often difficult to determine with certainty which animal made a given print and therefore they are usually attributed to a group rather than a specific animal. The footprint specimens on this