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Extant Ordovician first appearances
Late Ordovician first appearances
Animal subphyla
Chelicerata
Taxa named by Richard Heymons

Chelicerata: page information

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Page ID50884

Revisions0

Words3,298

OriginImported

CreatedJun 17, 2026, 4:52 AM

UpdatedJun 18, 2026, 1:08 AM