This is the “Fossil Friday” post #1.  Expect this to be a somewhat regular feature of the website.  We will post any fossil pictures you send in to esconi.info@gmail.com.  Please include a short description or story.  Check the #FossilFriday Twitter hash tag for contributions from around the world!

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These are Silurian nautiloids from the Chicago area. During the Silurian Chicago was a vast ocean reef.  Besides these remarkable nautiloids, you can find trilobites (30+ species), crinoids, and many other types of fossil animal.  The fossils below were submitted by long time ESCONI member John Catalani, who leads the Paleontology Study Group and is also instrumental in setting up some of our great field trips.

Bickmorites marshi

Cumingsoceras elrodi from Lemont, IL

Dawsonoceras sp. from Lemont, IL

Mandaloceras sp. from Romeoville, IL