Ulcanian
Ulcanian. A stage of the Lower Proterozoic, from about 2000 to 1600 Ma ago, underlain by the Udocanian and overlain by the Burzyan (Burzyanian).
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Danian , Danian
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1. The final age in the Miocene Epoch, preceded by the Tortonian, followed by the Zanclian (Tabianian), and with its upper boundary dated a… Burdigalian , Burdigalian
1. An age in the Early Miocene, preceded by the Aquitanian and followed by the Langhian.
2. The name of the corresponding European stage,… Frasnian , Frasnian (Frasien)
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1. An age in the Middle Devonian Epoch preceded by the Eifelian, followed by the Frasnian, and dated at 380.8–377.4 Ma ( Harland et al., 198…
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Ulcanian