The Pteridophyta atlas root retains a 385–0 Ma navigation envelope anchored by the Middle Devonian Wattieza–Eospermatopteris cladoxylopsid reconstruction; the fern-like body plan is not a crown-fern, crown-horsetail or direct-ancestor claim. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range385–Present Ma
Content packageearly-land-plants
PBDBtxn:54828
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
fossil-range · medium
The Pteridophyta atlas root retains a 385–0 Ma navigation envelope anchored by the Middle Devonian Wattieza–Eospermatopteris cladoxylopsid reconstruction; the fern-like body plan is not a crown-fern, crown-horsetail or direct-ancestor claim.
claim:taxon:pteridophyta:root-range-rc39
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.