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Calamites cisti Brongniart, 1828
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Products description
Here is a Mazon Creek nodule with two stem segments of the species Calamites cisti. | |||
Location: | Mazon Creek, Braidwood, Illinois , USA | ||
| Size of concretion : | about 94 x 53 mm | ||
| Age: | Upper Carboniferous, Pennsylvanian , Carbondale Fm. (about 300 Ma) | ||
Product no.: 10135