<p>fossil</p>
<p>This specimen of brachiopod is Productus crawfordsvillensis and was found in the Monte Cristo Group, which is early to late Mississippian in age (358-325 million years ago). All articulated brachiopods, including this form, when extinct at the end of the Permian (252 million years ago). 83mm  3.3 in.</p>
<ul><li>Keywords: biology; conservation; excavation; fossil; fossils; history; lake mead; museum; palaeontology; paleo; paleontology; preservation; research; science; scientific; specimen; productus crawfordsvillensis</li></ul>
Andrew Cattoir (Lake Mead National Recreation Area)
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