The Porifera root display uses 551–0 Ma as a sampled navigation envelope from the older bound of the 551–539 Ma Helicolocellus-bearing Dengying interval to living sponges; its crown placement is morphology-matrix dependent and does not establish the phylum's origin. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range551–Present Ma
Content packagesponges-cnidarians
PBDBtxn:2894
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
fossil-range · medium
The Porifera root display uses 551–0 Ma as a sampled navigation envelope from the older bound of the 551–539 Ma Helicolocellus-bearing Dengying interval to living sponges; its crown placement is morphology-matrix dependent and does not establish the phylum's origin.
claim:taxon:porifera:root-range-rc39
Known limits
A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
A late-Ediacaran crown-group sponge animalWang, X.; Liu, A.G.; Chen, Z.; Wu, C.; Liu, Y.; Wan, B.; Pang, K.; Zhou, C.; Yuan, X.; Xiao, S. · 2024 · DOI 10.1038/s41586-024-07520-y