Wikispecies has information related to Onnia.

Onnia may refer to:

• Onnia (fungus), a genus of fungi in the family Hymenochaetaceae
• Onnia (trilobite), a genus of trilobite in the family Trinucleidae from the late Ordovician of Africa, Europe, North America and South America

Topics referred to by the same term

This disambiguation page lists articles about distinct genera with the same name.
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