Connecting the environment of the ancient past with the natural and cultural history of yesterday and today.



Featured Fossil


This page will feature fossils from all geological time periods. Each image will have

some background about the specimen, its age, where it was found, and a nugget

of interesting information. Not every specimen will be perfectly preserved -

but all are a marvel of the natural world!


Ischadites - an ancient algae often referred to as a sponge.

Fossil Type:



Ischadites sp.




Emsian, Lower Devonian


Near Clarita, Coal Co., Oklahoma


A dasycladacean alga, it is part of a large group called “Receptaculitids.” This specimen is not well-preserved. Anonymous collection. ~1 cm dia.

Date Posted:

June 29, 2015


Archived Featured Fossils

Archived images are now arranged in each category by geological time period.

How to Submit a Featured Fossil

Created April 12, 2012