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Ptychopariida

Fortey's order-level review documents that traditional Ptychopariida is a problematic, probably paraphyletic assemblage used in historical trilobite classification. This entity is therefore a historical navigation grade, not a demonstrated clade, ancestor or globally bounded lineage. This navigation entry is not a phylogeny or a complete taxon dossier.

Represented rangeRange unavailable
Content packagetrilobites-chelicerates
PBDBtxn:20239

Evidence boundary

Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.

Claim ledger

taxonomy · medium

Fortey's order-level review documents that traditional Ptychopariida is a problematic, probably paraphyletic assemblage used in historical trilobite classification. This entity is therefore a historical navigation grade, not a demonstrated clade, ancestor or globally bounded lineage.

claim:taxon:ptychopariida

Known limits

References

  1. Trilobite systematics: the last 75 yearsFortey, R.A. · 2001 · DOI 10.1666/0022-3360(2001)075<1141:TSTLY>2.0.CO;2
  2. Open Tree of Life web servicesOpenTreeOfLife Project
  3. The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
  4. Denormalized occurrence and taxon tables of the Paleobiology DatabaseThe Paleobiology Database Community; Kocsis, Á.T. · 2026 · DOI 10.5281/zenodo.21620933
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