Archaeocyathid (Atikokania) sp. (Lower Cambrian)

Detailed replica of an etched limestone slab containing multiple cross–sections of these extinct Lower Cambrian reef–building organisms, possibly of the genus Atikokania. Australia.

• Porifera

Detailed replica of an etched limestone slab containing multiple cross–sections of these extinct Lower Cambrian reef–building organisms, possibly of the genus Atikokania. Australia.