Catalog / class

Hexactinellida

Hexactinellida is displayed at 536–0 Ma only as a basal-Cambrian-spicule-to-living navigation anthology: the Soltanieh material is a cautious fossil anchor, not an exact crown-Hexactinellida FAD or continuous occupancy record. This navigation entry is not a phylogeny or a complete taxon dossier.

Represented range536–Present Ma

Content packagesponges-cnidarians

PBDBtxn:3841

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:hexactinellida

Known limits

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

References

Giving the early fossil record of sponges a squeezeAntcliffe, J.B.; Callow, R.H.T.; Brasier, M.D. · 2014 · DOI 10.1111/brv.12090
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

Report an evidence issue ↗