Paleolimulus longispinus Schram, 1979
Paleolimulus longispinus Schram, 1979
Horseshoe crab
Carboniferous
Mississippian
Heath Shale Formation
Bear Gulch
Montana
USA
Not directly a beauty and not so much to see, but quite rare:
http://www.museunacional.ufrj.br/mndi/Aracnologia/Xiphosura/Moore%20et%20al%202007.pdf
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