Periodon
Genus of jawless fishes
From Wikipedia, the free encyclopedia
Periodon is a genus of conodonts which existed in what is now Canada, Iran, Argentina, China, Russia, and the United States during the Ordovician Period. It was described by Hadding in 1913, and the type species is P. aculeatus.
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| Genus: | Periodon Hadding, 1913 |