Theropod (dinosaur) Bird Track, negative Troodon 4 million years ago

4 million years ago

4 meter (8 ft) foot long scapula is from the type specimen

Their heads were horn-less but equipped with tusk-like lower incisors and were held in a horizontal position

The figure is believed to have been carved during the European Upper Paleolithic

not divided into lobes

Theropod (dinosaur) Bird Track, negative Troodon 4 million years agoThe 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