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System Series Stage Age (Ma)
Paleogene Paleocene Danian younger
Cretaceous Upper Maastrichtian 65.5–70.6
Campanian 70.6–83.5
Santonian 83.5–85.8
Coniacian 85.8–89.3
Turonian 89.3–93.5
Cenomanian 93.5–99.6
Lower Albian 99.6–112.0
Aptian 112.0–125.0
Barremian 125.0–130.0
Hauterivian 130.0–136.4
Valanginian 136.4–140.2
Berriasian 140.2–145.5
Jurassic Upper Tithonian older
Subdivision of the Cretaceous system according to the IUGS, as of July 2009.

The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 146 Ma to 100 Ma.

During this time many new types of dinosaurs appeared or came into prominence, including psittacosaurs, spinosaurs and coelurosaurs, while other survivors from the Late Jurassic continued.

In the seas, the ichthyosaurs declined and eventually died out at the start of the Late Cretaceous. Neognathous birds and angiosperms (flowering plants), appear for the first time.

See also

Cretaceous period
Lower/Early Cretaceous Upper/Late Cretaceous
Berriasian | Valanginian | Hauterivian
Barremian | Aptian | Albian
Cenomanian | Turonian | Coniacian
Santonian | Campanian | Maastrichtian


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