Aquitanian
Aquitanian is a age-level unit in the ICS 2026/06 timescale, displayed here from 23.04 to 20.45 Ma.
Evidence boundary
eag and lag are display projections of the versioned boundary records below. Phanerozoic numerical ages do not define the units; their GSSPs do. null uncertainty means the chart publishes a fixed GSSA/display value without an uncertainty in the numerical-age column.
Older boundary: 23.04 Ma · Younger boundary: 20.45 Ma · gtsd:Aquitanian
Numerical ages are versioned display values; Phanerozoic units are defined by GSSPs rather than by the numerical ages themselves.
Older boundary projected to the 23.04 Ma Miocene base shown on the ICS 2026/06 chart; the RDF Aquitanian value is rounded to 23.03 Ma.
References
- International Chronostratigraphic Chart v2026/06Cohen, K.M.; Harper, D.A.T.; Gibbard, P.L.; Car, N. · 2026 · DOI 10.18814/epiiugs/2025/025001