Upper Ordovician to middle Devonian.
Favosite is a colonial tabulate genus
with thin-walled prismatic corallites which are in very close contact. This specimen took
10,000 years to grow to this size as a small deposit of limestone was left behind when
each worm died
Jurassic to Cretaceous.
Of the Star Fish and Sea Urchin family. Photo
shows central mouth. It would have been covered with spines.
Commonly called Devils Toe Nails.