Grallator variabilis, dinosaur track (positive) Gallimimus but probably recovered from the

but probably recovered from the Gobi Desert

The Russian researcher Sergei Zimov estimates that during the last Ice Age

000 species have been identified

the fictional school from the Harry Potter* book series

The coelacanth (pronounced SEE-la-canth) is a primitive lobe-finned fish (Crossopterygii) that appeared about 380 million years ago (about 150 million years before the dinosaurs appeared)

Grallator variabilis, dinosaur track (positive) Gallimimus but probably recovered from theThe 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. Grallator is an ichnogenus,