This is the “Fossil Friday” post #55.  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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Today, we visit another Mazon Creek plant fossil, Cyclopteris trichomanoides.  Cyclopteris is associated with various seed ferns, like Neuropteris, Macroneuropteris, Leveineopteris, and others.  It was possibly attached to the lower parts of the pinnate fronds and the trunk of axis of the plant.  This fossil concretion belongs to ESCONI member Rich Holm.