Crinoid crown (P. alexanderi) on hash plate matrix from the Mississippian sub-period
Tag: echinoderms
Crinoidea sp. (specimen 01)
Crinoid stem segment (Crinoidea sp.) from the Carboniferous period
Cidaroida sp. (specimen 03)
Primitive urchin spine (Cidaroida sp.) from the Eocene epoch
Clypeasteroida sp. (specimen 02)
Fossilised sand dollar (Clypeasteroida sp.) from the Eocene epoch
Echinoidea sp. (specimen 01)
Urchin spine (Echinoidea sp.) from the Miocene epoch
The Fossil Ark 