Polished fossil crinoids
Fossil marine life
These special fossils are known as 'falling star stone'. The reason for this is the clearly visible stars in the rock. Although they look like starfish, they are actually fossilised crinoids. The stone is found in the south of Utah in the USA and gives a nice impression of maritime life millions of years ago.
Crinoids belong to the class Crinoidea and are echinoderms marine animals. Although the name might suggest that it is a plant, crinoids are indeed animals. Crinoids still exist and have been living on Earth for about 500 million years. They are therefore considered to be living fossils.