Triarthrus
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| phylum | Arthropoda | Triarthrus is a genus of Upper Ordovician ptychopariid trilobite found in New York, Ohio, Kentucky, and Indiana, eastern and northern Canada, China and Scandinavia. It is the last of the Olenid trilobites, a group which flourished in the Cambrian period.
For more information, visit the Wikipedia entry. Get back to Trilobite |
| Class | Trilobita | |
| order | Ptychopariida | |
| family | Olenidae | |
| genus | Triarthrus |
