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!


Ceraurus pleurexanthemus - a spiny Ordovician trilobite

Fossil Type:



Ceraurus pleurexanthemus Green




Trenton Group, Middle Ordovician


Quebec City, Quebec, Canada


A species that illustrates the diverse spines found on many trilobites, it has genial spines off the cephalon, pleural spines off the thorax and a pair of pygidial spines of the back end. Spines could be used for defense or to allow the animal to swim be providing hydrodynamic lift. Anonymous collection. Scale 2 cm

Date Posted:

August 20, 2014


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Created April 12, 2012