This entry is about Ordovician Period bryozoans. When I talk to children at the science center about fossils and we are looking the bryozoan. I point out the name in Greek means "moss animal". Next we examine the fossil for small holes to see where each little animal or zooid lived.
The first one shown is called Hallopora dalei found in Covington, Kentucky.
The second is Hallopora ramosa found in Cincinnati, Ohio.