Early amniote relationships support distinct synapsid and sauropsid branches, while several Paleozoic placements remain analysis-dependent.
claim:event:amniote-divergenceAmniote diversification
Early amniotes split into the major lineages that would later produce mammals and reptiles, including birds.
Represented range320–300 Ma
RegionsEquatorial Pangaea
CladesSynapsida · Sauropsida
Claim ledger
References
- The phylogeny of early amniotes and the affinities of Parareptilia and VaranopidaeFord, D.P.; Benson, R.B.J. · 2020 · DOI 10.1038/s41559-019-1047-3