Burdigalian
Geologic time period
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The Burdigalian is, in the geologic timescale, an age or stage in the early Miocene. It spans the time between 20.43 ± 0.05 Ma and 15.97 ± 0.05 Ma. Preceded by the Aquitanian, the Burdigalian was the first and longest warming period of the Miocene... Wikipedia
Epoch: Miocene
Occurred: 20.44 million years ago - 15.97 million years ago
Lower boundary definition: Not formally defined
Lower boundary GSSP candidate section(s): Astronomically tuned ODP-core
Upper boundary definition candidates: Near top of magnetic polarity chronozone C5Cn.1n; Near FAD of the Planktonic Foraminiferan Praeorbulina glomerosa
Organisms: Acropyga, Omoiosicista, Araeodelphis, and more