This is the “Fossil Friday” post #321. Expect this to be a regular feature of the website. We will post fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Bluesky/Twitter hash tag for contributions from around the world!

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Marie Angkuw sent us these photos of a beautiful Mazon Creek. It’s a Crenulopteris acadica from the Mazon River. Crenulopteris acadica is a common fern from Mazon Creek, but this one is very large with multiple fronds. Marie collected this one a few years ago at the I&M Canal Corridor Benefit. The concretion opened up via the Freeze/Thaw method this past winter.

Thanks for sharing, Marie!