Grallator variabilis, dinosaur track (negative) Iguanodon an eel-like tail

an eel-like tail

000 Years Old

: 100% airlume combed and ringspun cotton (fiber content may vary for different colors)

It is one of the two geologically youngest known species of dromaeosaurids

The gas caused the crinoid to float and could probably be regulated to allow the crinoid to move up and down in the water column

Grallator variabilis, dinosaur track (negative) Iguanodon an eel-like tailThe 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,