A cleaved Coelacanth fish Whiteia Woodwardi, Madagascar, Lower Triassic (250 million years), h. 17 cm, with bases

Note: Coelacanth is a fish considered as a "living fossil". The first specimens are about 350 million years old and their morphological evolution is very limited. The first living Coelacanth was discovered in 1938 off the coast of South Africa.