Back to the Past
by Enrico Bonino

<Fillmore Formation image>  

"Fillmore Formation"

The Fillmore Formation (Early Ordovician) is a mixed carbonatic-siliciclastic unit that accumulated on a rapidly subsiding platform. Orthoceratids, crinoids, sponges, early agnate fish and trilobites (Pseudocybele) are the main organisms that lived in this platform marine environment.

Media: Adobe Photoshop.

Click on arrows to get closer or view next illustration.