Incredibly preserved nodule measuring ± 5.3 x 4.5 cm, the fossil measures ± 3.8 cm.
- The Mazon Creek deposits of the region near Braidwood, Illinois, rival the other famous Lagerstatten of Burgess Shale, Solnhofen and Liaoning for the variety of detailed life preserved. Many exquisitely preserved specimens are found in the iron stone nodules that form the deposits. Most of the collection areas are debris from abandoned coal mines, the most famous of which is Peabody Coal Pit 11. Pit 11 now serves as a cooling pond for the Braidwood Nuclear Power Plant, but there are more of 100 different locations. This specimen is a member of an extinct locust-like order that flourished during the Carboniferous in North America and Europe. The antennae, antennules and legs are quite easily distinguished in this good example.
Carboniferous (Pennsylvanic-Missouri), Pit 11, Francis Creek Shale, Carbondale Formation
Braidwood, Illinois, USA
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