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Triarthrus spinosus BILLINGS, 1857
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Products description
A very rare variation of Triarthrus with very long genal spines. | |||
Location: | Ottawa, Ontario Canada | ||
| Size: | about 16 mm long | ||
| Age: | Upper Ordovician, Ashgill, Billings Fm. (about 449 Mill. Jahre) | ||
Product no.: 1897