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Taxon: Order Petromyzontia (fish)
 Entity: 

Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Agnatha

Current position

Agnatha (Class) Cope, 1889 Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 620).

Historical positions

Agnatha (Class) Cope, 1889 Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 620).
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Last updated: 1 Feb 2024