Era
Paleogene
PAY-lee-oh-jeen
Also Known As Tertiary Historical name for the combined interval now split into the Paleogene and Neogene periods; no longer a formally recognized stratigraphic term.
Phanerozoic
The Paleogene is the first period of the Cenozoic Era, spanning about 66 to 23.04 million years ago and comprising the Paleocene, Eocene and Oligocene epochs. It opens immediately after the Cretaceous-Paleogene extinction event, which ended the age of non-avian dinosaurs and left ecological niches open for surviving vertebrate lineages. Mammals underwent a rapid diversification through the period, evolving from a handful of small, generalized forms into most of the major modern orders. The Paleogene and the following Neogene were formerly grouped together as the Tertiary Period, a term still in informal use though no longer formally recognized.
Facts
Start (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. End (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. Key EventMammals underwent a rapid diversification through the period, evolving from a few small, generalized forms into most of the modern varieties seen today, after the Cretaceous-Paleogene extinction event opened ecological niches at the period's start. 1 Defining Event Paleogene
Filter Results8 entries
Connections
Associated With
Source Cerro de Arcos (Wikipedia)
Source Chimborazo (Wikipedia)
Source Cretaceous-Paleogene Extinction Event (Wikipedia)
Source Deccan Traps (Wikipedia)
Source Wikipedia: Giant's Causeway - Wikipedia
Source Hell Creek Formation (Wikipedia)
Source Wikipedia: Meteora, Wikipedia
Source Muddus plains (Wikipedia)
Source White River Formation (Wikipedia)
Has Geologic Rank
Precursor To
Sources
1. Paleogene (Wikipedia)
Wikimedia FoundationIntroduction (K-Pg extinction)
Much of the world's modern vertebrate diversity originated in a rapid surge of diversification in the early Paleogene, as survivors of the Cretaceous-Paleogene extinction event took advantage of empty ecological niches.
Lead section
The Paleogene Period (IPA: PAY-lee-ə-jeen, -lee-oh-, PAL-ee-; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period 66 Ma (million years ago) to the beginning of the Neogene Period 23.04 Ma. It is the first period of the Cenozoic Era, the tenth period of the Phanerozoic and is divided into the Paleocene, Eocene, and Oligocene epochs.
Article text
Mammals began a rapid diversification during this period. After the Cretaceous-Paleogene extinction event, which saw the demise of the non-avian dinosaurs, mammals began to evolve from a few small and generalized forms into most of the modern varieties we see presently.
Lead section
The earlier term Tertiary Period was used to define the time now covered by the Paleogene and subsequent Neogene periods; despite no longer being recognized as a formal stratigraphic term, Tertiary sometimes remains in informal use.
Lead paragraph
Much of the world's modern vertebrate diversity originated in a rapid surge of diversification in the early Paleogene, as survivors of the Cretaceous-Paleogene extinction event took advantage of empty ecological niches left behind by the extinction of the non-avian dinosaurs, pterosaurs, marine reptiles, and primitive fish groups.
View the Source Cretaceous-Paleogene Extinction Event (Wikipedia)
Wikimedia FoundationAssociated With: Cretaceous-Paleogene Extinction EventView the Source Wikipedia: Giant's Causeway - Wikipedia
Associated With: Giant's Causeway, Lead section
the result of an ancient volcanic fissure eruption, part of the North Atlantic Igneous Province active in the region during the Paleogene period
Associated With: Giant's Causeway, Lead, age Paleogene
The Giant's Causeway (Irish: Clochán an Aifir or Clochán na bhFomhórach) is an area of approximately 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption, part of the North Atlantic Igneous Province active in the region during the Paleogene period.
View the SourceHell Creek Formation (Wikipedia)
Associated With: Hell Creek Formation, Lead paragraphQuote, Associated With: Hell Creek Formation, Lead paragraph
It is a series of fresh and brackish-water clays, mudstones, and sandstones deposited during the Maastrichtian and Danian (respectively, the end of the Cretaceous period and the beginning of the Paleogene) by fluvial activity in fluctuating river channels and deltas and very occasional peaty swamp deposits along the low-lying eastern continental margin fronting the late Cretaceous Western Interior Seaway.
White River Formation (Wikipedia)
Associated With: White River Formation, Lead paragraph
The White River Formation is a geologic formation of the Paleogene Period, in the northern Great Plains and central Rocky Mountains, within the United States.
Associated With: White River Formation, Lead, age Paleogene
The White River Formation is a geologic formation of the Paleogene Period, in the northern Great Plains and central Rocky Mountains, within the United States.
View the SourceMuddus plains (Wikipedia)
Associated With: Muddus Plains, Lead paragraph
The plains formed in connection to the uplift of the northern Scandinavian Mountains in the Paleogene.
Associated With: Muddus Plains, Lead, age Paleogene
The plains formed in connection to the uplift of the northern Scandinavian Mountains in the Paleogene.
View the SourceDeccan Traps (Wikipedia)
Associated With: Deccan Traps, Lead, age PaleogeneQuote, Associated With: Deccan Traps, Lead, age Paleogene
The eruptions occurred over a 600,000-to-800,000-year time period between around 66.3 to 65.6 million years ago, spanning the Cretaceous-Paleogene boundary.
Wikipedia: Meteora, Wikipedia
Associated With: Meteora, Article text, age PaleogeneQuote, Associated With: Meteora, Article text, age Paleogene
About 60 million years ago during the Paleogene period a series of earth movements pushed the seabed upward, creating a high plateau and causing many vertical fault lines in the thick layer of sandstone.
Chimborazo (Wikipedia)
Associated With: Chimborazo, Infobox: ageQuote, Associated With: Chimborazo, Infobox: age
Paleogene
Cerro de Arcos (Wikipedia)
Associated With: Cerro de Arcos, Infobox: ageQuote, Associated With: Cerro de Arcos, Infobox: age
Paleogene (Gomez 1994)
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