Xiphosura

Lamsdell's 2020 revision compares fossil and living horseshoe crabs and discusses an Ordovician record separated from the next Upper Devonian occurrences by a fossil-record gap. This study-linked navigation span is not continuous occupancy, an exact origin date or a complete global range. This navigation entry is not a phylogeny or a complete taxon dossier.

Represented range480–Present Ma

Content packagetrilobites-chelicerates

PBDBNot linked

Evidence boundary

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

Claim ledger

fossil-range · medium

claim:taxon:xiphosura

Known limits

A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
PBDB external identifier withheld: accepted-rank-mismatch.

References

The phylogeny and systematics of XiphosuraLamsdell, J.C. · 2020 · DOI 10.7717/peerj.10431
Open Tree of Life web servicesOpenTreeOfLife Project
The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39

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