A class-level profile tied to Floian Stenaster material from the Wah Wah Formation; its displayed endpoint is a stage ceiling, not a point-dated global first appearance.
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A class-level ophiuran occurrence represented by Stenaster from the Wah Wah Formation is Floian in age; the atlas therefore uses the Floian base only as a stage ceiling for the Ophiuroidea body-fossil record.
claim:taxon:ophiuroidea:floian-body-fossilThe cited systematic study reports Stenaster as class-level ophiuran material; the profile uses that bounded assignment without claiming a complete ophiuran topology or direct ancestry.
claim:taxon:ophiuroidea:taxonomyThe cited Stenaster record is from the Floian Wah Wah Formation of Utah, United States; it is a source-bounded occurrence rather than a global ophiuran distribution or origin claim.
claim:taxon:ophiuroidea:biogeographyThe Stenaster systematic record does not establish class-wide diet, habitat preference, locomotor performance, body-size distribution or guild for Ophiuroidea; only source-bounded marine formation context is retained.
claim:taxon:ophiuroidea:ecologyThe cited systematic treatment describes class-level ophiuran anatomy in Stenaster material, which remains a source-bounded fossil observation rather than a class-wide invariant trait list.
claim:taxon:ophiuroidea:morphology