Daily Archives: November 24, 2013

Wooster’s Fossil of the Week: A crinoid calyx from the Lower Carboniferous of Iowa

In honor of Echinoderm Week for my Invertebrate Paleontology course, we have a beautiful crinoid calyx (or crown, or just “head”) on a slab from the Burlington Limestone (Lower Carboniferous, Osagean) found near Burlington, Iowa. I inherited this fossil when … Continue reading

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