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Arctinurus boltoni (BIGSBY, 1825)
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Products description
Cephalon with librigena as a sample of this large lichid trilobite. |
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| Location: | Middleport, New York, USA | |
Size trilobite: | about 31 mm long |
Age: | Lower Silurian, Rochester shale (about. 430 Mill. y.o.) |