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The Agenian age is a period of geologic time (23.8—20 Ma) within the Miocene used more specifically with European Land Mammal Ages. It follows the Orleanian age and overlaps the Aquitanian and Burdigalian ages.[1]


Neogene period
Miocene
Pliocene
Pleistocene
Holocene
Aquitanian | Burdigalian
Langhian | Serravallian
Tortonian | Messinian
Zanclean | Piacenzian
(Gelasian)
Gelasian | Early
Middle | Late
Boreal | Atlantic
Geological time spiral
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