Spatangoid Echinoid Fossil,Brissopsis pohangenesis n.sp.,from the Duho Formation,Pohang Basin,Korea

A great number of the Cenozoic echinoid fossils were found from the Duho Formation of the Pohang Basin,Korea.Most of the echinoid fossils,ranging from 2-8 cm in diameter,were preserved as flattened or crushed specimens.However,each side(oral or aboral) containing diagnostic features is well preserved in the flattened specimens.Korean echinoid fossils belonging to the order Spatangoida,a group