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0171
Calymene niagarensis (HALL)

Silurien

McCook, Illinois (USA)

Width of the cephalon about 1.0 cm

0172 0173 0174
reflecting micro spots of dolomite:
0175 0176
0177
Asaphida Harpina Illaenina Lichida Phacopina Proetina
Start Links all trilobites on Trilotarium Specials

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