Bazsites.com By Geological Interval

Directory Topics

Lower-Middle Cambrian Boundary Research, Southern Great Basin and South China, 1993-2005 - Linda B. McCollum reviews paleontologic studies on this stratigraphic boundary, which is associated with a mass extinction.
Cambrian - Pamela Gore's article about the Cambrian fossil record.
UCMP Web Time Machine - A geologic timescale from the UC Berkeley Museum of Paleontology.
The Paleozoic Era - An illustrated geological timeline.
The Silurian - An overview of the period from the UC Berkeley Museum of Paleontology.
International Subcommission on Cambrian Stratigraphy - A virtual visit to the Cambrian world, details of stratigraphy, localities and life in the Cambrian.
The Cambrian Explosion - Virtual museum exhibit about the major faunal radiation that occurred in the Cambrian.
Cambrian Geography - Description and maps of the continents as they existed at the time.
The Cambrian Period - University of California Museum of Paleontology introduction to the Cambrian.
The Dawn of Animal Life - Exhibit about the first animals. Mostly Cambrian, some PreCambrian.

Interglacial - An Interglacial is a geological interval of warmer global average temperature that separates glacials, or ice ages. The current Holocene interglacial has persisted since the Pleistocene, about 11,400 years ago.
Tertiary - The Tertiary geological time interval covers roughly the time span between the demise of the non-avian dinosaurs and beginning of the most recent Ice Age, approximately 65 million to 1.8 million years ago.