Search for family Protocycloceratidae returned 40 results.
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genus: Hemicoanella
Kingdom: Animalia
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genus: Endocycloceras
Kingdom: Animalia
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genus: Kyminoceras
Kingdom: Animalia
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genus: Catoraphiceras
Kingdom: Animalia
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genus: Apocrinoceras
Kingdom: Animalia
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genus: Ectocycloceras
Kingdom: Animalia
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genus: Rudolfoceras
Kingdom: Animalia
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genus: Walcottoceras
Kingdom: Animalia
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species: Orthoceras sordidum
Kingdom: Animalia
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species: Catoraphiceras lobatum
Kingdom: Animalia