Phylogenomic analyses sample the major arachnid orders and expose systematic conflict among data partitions at deep nodes. The evidence supports a contested sampled topology, not one settled arachnid tree, direct ancestor or temporal origin. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented rangeRange unavailable
Content packagetrilobites-chelicerates
PBDBtxn:19008
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
topology · medium
Phylogenomic analyses sample the major arachnid orders and expose systematic conflict among data partitions at deep nodes. The evidence supports a contested sampled topology, not one settled arachnid tree, direct ancestor or temporal origin.
claim:taxon:arachnida
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.