Timeline: Geologic Eras

ERA PERIOD EPOCH

CENOZOIC (65.5 million years ago to present)

Neogene (23 million years ago to the present) Holocene (11,500 years ago to present)
    Pleistocene (1.8 million years ago to 11,500 years ago)
    Pliocene (5.3-1.8 million years ago)
    Miocene (23-5.3 million years ago)
  Paleogene (65.5-23 million years ago) Oligocene (33.9-23 million years ago)
    Eocene (55.8-33.9 million years ago)
    Paleocene (65.5-55.8 million years ago)
MESOZOIC (251-65.5 million years ago) Cretaceous (145.5-65.5 million years ago)  
  Jurassic (200-145.5 million years ago)  
  Triassic (251-200 million years ago)  
PALEOZOIC (542-251 million years ago) Permian (299-251 milion years ago)  
  Pennsylvanian (318-299 million years ago)  
  Mississippian (359-318 million years ago)  
  Devonian (416-359 million years ago)  
  Silurian (444-416 million years ago)  
  Ordovician (488-444 million years ago)  
  Cambrian (542-488 million years ago)  
PRECAMBRIAN (undefined to 542 million years ago) Proterozoic (2,500-542 million years ago)  
  Archean (undefined to 2,500 million years ago)  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Source: Pamela J. W. Gore, Georgia State University Perimeter College

 
From Our Home Page
Georgia Conservancy

The Georgia Conservancy is a statewide environmental organization working to ensure that present and future generations of Georgians have healthy air, clean water, unspoiled wild places, and commu

Read more...
Bill Lowery (1924-2004)

Bill Lowery, often referred to as "Mr.

Read more...
Crypt of Civilization

The Crypt of Civilization, a multimillennial time capsule, is a chamber that was sealed behind a stainless steel door in 1940 at

Read more...
Lucy May Stanton (1875-1931)

Lucy May Stanton created works in oil, pastel, and watercolor; but she is best known as a painter of portrait miniatures in water

Read more...
Courtesy of Hargrett Rare Book and Manuscript Library, University of Georgia Libraries