We have a text-only version of this page. Introduction to Geology | Navigating our Geology Wing (mya = million years ago) Phanerozoic Eon (544 mya to present) Cenozoic Era (65 mya to today) Quaternary (1.8 mya to today) Holocene (11, 000 years to today) Pleistocene (1.8 mya to 11, 000 yrs) Tertiary (65 to 1.8 mya) Pliocene (5 to 1.8 mya) Miocene (23 to 5 mya) Oligocene (38 to 23 mya) Eocene (54 to ...
www.ucmp.berkeley.edu/help/timeform.html
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Version 1.2 VIEW a list of other USGS General Interest Publications This page is URL: http://pubs.usgs.gov/gip/geotime/ Last updated December 11, 2000 Maintained by Eastern Publications Group Web Team ...
pubs.usgs.gov/gip/geotime
The Paleozoic Era The Paleozoic is bracketed by two of the most important events in the history of animal life. At its beginning, multicelled animals underwent a dramatic explosion in diversity, and almost all living animal phyla appeared within a few millions of years. At the other end of the Paleozoic, the largest mass extinction in history wiped out approximately 90% of all marine animal ...
www.ucmp.berkeley.edu/paleozoic/paleozoic.html
Introduction to the Mesozoic Era The Mesozoic is divided into three time periods: the Triassic (245-208 Million Years Ago), the Jurassic (208-146 Million Years Ago), and the Cretaceous (146-65 Million Years Ago). Mesozoic means middle animals , and is the time during which the world fauna changed drastically from that which had been seen in the Paleozoic. Dinosaurs, which are perhaps the most ...
www.ucmp.berkeley.edu/mesozoic/mesozoic.html
The works of artist Douglas Henderson, an illustrator of scientific reconstructions of earth history ...
gallery.in-tch.com/~earthhistory
There's good old Mother Earth. Say, did you ever wonder about all of the things that have ever happened on Earth and how old it really is As it turns out, Mother Earth was a bit reluctant to let out her true age. It took us a long time to figure it out, but as near as we can tell, Mother Earth is four thousand, six hundred million years old (4, 600 million = 4.6 billion), give or take a few ...
www.cotf.edu/ete/modules/msese/earthsysflr/geotime.html
Introduction to the Cenozoic 65 Million Years to the Present The Cenozoic is the most recent of the three major subdivisions of animal history. The other two are the Paleozoic and Mesozoic. The Cenozoic spans only about 65 million years, from the end of the Cretaceous and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called the Age of Mammals, because the ...
www.ucmp.berkeley.edu/cenozoic/cenozoic.html
Miller Museum Online Exhibit Our newest permanent exhibit and the first online exhibit from the Miller Museum of Geology, Queen's University, Kingston, Ontario, Canada Special thanks to the Canadian Geological Foundation for helping to make this exhibit possible at the Miller Museum Selected by November 1998 While most people know of the dinosaurs from a mere 70 million years ago, very few are ...
geol.queensu.ca/museum/exhibits/dawnex.html
Geologic Ages of Earth History Jeff Poling Copyright 1995, 1997 by Jeff Poling Shift-Click to download a zipped Microsoft Excel worksheet version of this page: history.zip (12k) REFERENCES: Harland, W. Brian, Richard Armstrong, Allan Cox, Craig Lorraine, Alan Smith and David Smith. 1990. A Geologic Time Scale 1989. New York: Cambridge University Press. Gradstein, F.M., F.P. Agterberg, J.G.
www.dinosauria.com/dml/history.htm
Introduction to the Archaean 3.8 to 2.5 billion years ago If you were able to travel back to visit the Earth during the Archaean, you would likely not recognize it is the same planet we inhabit today. The atmosphere was very different from what we breathe today; at that time, it was likely a reducing atmosphere of methane, ammonia, and other gases which would be toxic to most life on our planet ...
www.ucmp.berkeley.edu/precambrian/archaean.html
Hadean time: 4.5 to 3.8 billion years ago Hadean time is not a geological period as such. No rocks on the Earth are this old - except for meteorites. During Hadean time, the Solar System was forming, probably within a large cloud of gas and dust around the sun, called an accretion disc. The relative abundance of heavier elements in the Solar System suggests that this gas and dust was derived ...
www.ucmp.berkeley.edu/precambrian/hadean.html
BioForum 2d--A talk by J. Lipps about The Radiation of the First Animals ...
www.accessexcellence.org/BF/bf02/lipps
A visual synopsis of plate tectonics from the Cambrian era to the present.
www.handprint.com/PS/GEO/geoevo.html
Boulder Beach, Mangahouanga Stream (Lower Cretaceous, New Zealand), 13 Jan 1995. Photograph Copyright Joan Wiffen, Used with Permission Mesozoic Marine Monsters of the Mangahouanga ....and elsewhere In New Zealand New Zealands Sea Reptiles From the Time of the Dinosaurs, and Their Fossil Remains Copyright 2000-2002 by Mike Everhart and David Lewis Last updated February 4, 2002 Introduction: ...
oceansofkansas.com/nz-aus.html
The Precambrian Eon The name means: before the Cambrian period. This old, but still common term was originally used to refer to the whole period of Earth's history before the formation of the oldest rocks with recognizable fossils in them. In the last few decades, however, geologists have found that there are some hard-to-discern fossils in some Precambrian rocks, so this period also is now ...
www.cotf.edu/ete/modules/msese/earthsysflr/cambrian.html
www.csis.ul.ie/staff/NiallGriffith/mnpdpp_bib0.htm
A resource for current studies on New Zealand Neogene - Recent foraminifera and biostratigraphy. Includes abstracts, reviews, summaries and extracts from work in progress, commentaries ...
homepages.paradise.net.nz/ghscott
Paleozoic Extinctions The Precambrian and Vendian Mass Extinctions The Cambrian Mass Extinction The Ordovician Mass Extinction The Devonian Mass Extinction The Permian Mass Extinction ...
www.anselm.edu/homepage/jpitocch/paleoext.html
Chart prepared by the U.S. Geological Survey.
aa179.cr.usgs.gov/dlv/geotime.html