Catalog / genus

Protolenus

The studied Protolenus (Hupeolenus) sp. specimens come from volcanic ash in the Tatelt Formation, Cambrian Series 2, Stage 4, in Morocco's Lemdad Syncline. This occurrence documents the study sample, not the genus's global first appearance or complete range. This navigation entry is not a phylogeny or a complete taxon dossier.

Represented range515–514 Ma

Content packagetrilobites-chelicerates

PBDBtxn:20883

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:protolenus

Known limits

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

References

Rapid volcanic ash entombment reveals the 3D anatomy of Cambrian trilobitesEl Albani, A. et al. · 2024 · DOI 10.1126/science.adl4540
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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