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Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last surviving order of trilobite, dying out in the Permian-Triassic extinction event.
| Hadrohybus | |
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| Genus: | Hadrohybus |
Hadrohybus is an extinct genus of trilobites in the order Phacopida. It lived in Newfoundland during the Ordovician.
Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last surviving order of trilobite, dying out in the Permian-Triassic extinction event.
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