†family Onchidae (shark)

Chondrichthyes - Polyspondyli - Onchidae

Parent taxon: Polyspondyli according to D. S. Jordan 1963

Sister taxa: none

Subtaxa: Archaeacanthus Leptocheles Naulas Onchus

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Ecology: nektonic carnivore

Distribution:

• Permian of the Russian Federation (1 collection)

• Devonian of Bolivia (1), Canada (1: Nova Scotia), the United Kingdom (1), United States (2: Ohio, Wyoming)

• Silurian of the Czech Republic (1), Estonia (3), the United Kingdom (2)

Total: 12 collections including 18 occurrences

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