Echinerpeton material from the 308.5–305.5 Ma Sydney Mines Formation anchors the 308.5–0 Ma Synapsida route; its ophiacodontid assignment is a matrix result and the sample is not the synapsid origin or a global FAD.
claim:taxon:synapsida:root-rangeSynapsida
Echinerpeton material from the 308.5–305.5 Ma Sydney Mines Formation anchors the 308.5–0 Ma Synapsida route; its ophiacodontid assignment is a matrix result and the sample is not the synapsid origin or a global FAD. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range308.5–Present Ma
Content packagemammal-origins
PBDBNot linked
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
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
- Antiquity of 'Sail-Backed' Neural Spine Hyper-Elongation in Mammal ForerunnersMann, A.; Reisz, R.R. · 2020 · DOI 10.3389/feart.2020.00083
- Open Tree of Life web servicesOpenTreeOfLife Project
- The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39