ammonites
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Prefica Olson 1987

PaleoDB taxon number: 356985

Full reference: S. L. Olson. 1987. An early Eocene oilbird from the Green River Formation of Wyoming (Caprimulgiformes: Steatornithidae). Documents des Laboratoires de Géologie de la Faculté des Sciences de Lyon 99:57-69

Parent taxon: Preficinae according to S. L. Olson 1987

Sister taxon: Paraprefica

Subtaxa: Prefica nivea

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