Here is a incomplete lower Cambrian Trilobite of the quite rare species Nevadia weeksi from the site of the Montezuma Ranch in Esmerlander County , Nevada.
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Location: | Montezuma Ranch, Esmerlander County, Nevada, USA | ||
Size: | about 41 mm wide | ||
Age: | Lower Cambrian, Montenegro Member of the Campito Formation (about 540 Ma) |