cloudina carinata, early metazoan worn-d

550 animal animals appalachian caceres calcareous carinata cloudina cloudinids cones conical ediacaran embedded evolution extremadura family fauna fossil fossils funnelinfunnel geological geopark geosite geoturism global heritage history metazoan mineralized nested paleontology polychaete prehistorical records shelly skeletons spain specimens stone unesco villuercasiboresjara worms