Catalog / phylum

Brachiopoda

The Brachiopoda root display replaces the legacy 540 Ma bound with a rounded 520–0 Ma total-group navigation envelope anchored by Early Cambrian Micrina sclerites reconstructed as a stem brachiopod; it is not a crown-brachiopod FAD. This navigation entry is not a phylogeny or a complete taxon dossier.

Represented range520–Present Ma

Content packagemolluscs-brachiopods

PBDBtxn:26322

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:brachiopoda:root-range-rc39

Known limits

A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.

References

The Early Cambrian tommotiid Micrina, a sessile bivalved stem group brachiopodHolmer, L.E.; Skovsted, C.B.; Brock, G.A.; Valentine, J.L.; Paterson, J.R. · 2008 · DOI 10.1098/rsbl.2008.0277
Open Tree of Life web servicesOpenTreeOfLife Project
The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
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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