Reference Article

from Wikipedia, the free encyclopedia

Timeline of evolution

This timeline of the evolution of life outlines the major events in the development of life on the planet Earth.

Dates given are estimates based on scientific evidence.

In biology, evolution is the process by which populations of organisms acquire and pass on novel traits from generation to generation.

Its occurrence over large stretches of time explains the origin of new species and ultimately the vast diversity of the biological world.

Contemporary species are related to each other through common descent, products of evolution and speciation over billions of years.

The basic timeline is a 4600 million year old Earth with: 4000 my (million years) of simple cells; 3000 my of photosynthesis; 2000 my of complex cells; 1000 my of multicellular life; 600 my of simple animals; 500 my of fish and proto-amphibians; 475 my of land plants; 400 my of insects and seeds; 360 my of amphibians; 300 my of reptiles; 200 my of mammals; 150 my of birds; 100 my of flowers; and 65 my since the non-avian dinosaurs died out.

Note: This article excerpts material from the Wikipedia article "Timeline of evolution", which is released under the GNU Free Documentation License.

See the following related content on ScienceDaily:


Related Videos

last updated on 2014-08-21 at 4:30 am EDT

World's Oldest Turtle Fossil Could Bridge Evolutionary Gap

World's Oldest Turtle Fossil Could Bridge Evolutionary Gap

Reuters (Oct. 19, 2012) Polish paleontologists have uncovered what they believe is the world's oldest turtle fossil in the southern city of Poreba. They've also found what they suspect is a separate turtle species, previously unknown and hope that subsequent examination will help solve unanswered questions about the animals' evolution.
Powered by NewsLook.com
Georgia Displays Skull That Could Rewrite Human Evolution

Georgia Displays Skull That Could Rewrite Human Evolution

AFP (Oct. 18, 2013) Georgian scientists on October 18, 2013 presented a 1.8 million-year-old skull discovered in the Caucasus nation that researchers say could force a re-evaluation of current theories of human evolution.
Powered by NewsLook.com
Studio Guest: Oliver Wings

Studio Guest: Oliver Wings

Deutsche Welle (May 28, 2012) Our studio guest Oliver Wings is a dinosaur researcher at the Leibniz Institute for Research on Evolution and Biodiversity. He speaks with us about the importance of research on dinosaurs to modern science.
Powered by NewsLook.com
New Study Shows Evolution of 'Unique' Human Brain

New Study Shows Evolution of 'Unique' Human Brain

Newsy (Feb. 24, 2013) A recent study looks at how evolution shaped the human brain into being what researchers are calling a 'unique' form.
Powered by NewsLook.com

Related Stories


Share This



Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins