This is the “Fossil Friday” post #147.  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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Had a large Annularia from Danville open up this past weekend.  The concretion is about 4 inches across.  It has a fern (Crenulopteris?) and a ghostly Lepidostrobophyllum on the outside.  On the inside is a beautiful Annularia.  The Danville fossils are a few million years younger than Mazon Creek, but many of the same species are present in the deposit.  This concretion was collected back during the fall Danville field trip.

Enjoy!