There are many commercially available timelines that are scaled to represent all 4.5 billion years of earth's history. They tend to be over 10 feet long! We are currently working on our own version. Eons, The biggest subdivisions are of course the longest …

When rendering fossil-wiki forum posts, add a wrapper DIV around them so that the CSS which expects that for markdown and plain-text posts still applies. This fixes the sideways layout of fossil-wiki posts like that seen in forumpost/3d709776b8. Note that a simpler fix would be to add the wrapper element to wiki_render_by_mimetype(), but that might have undesired side effects …

age: 195,000 years ago – 2009 brain size: 1350 cc fossils found: living samples available in large quantities adaptations: forehead rises sharply, small or non-existent brow ridges, prominent chin, thin skeleton location found: everywhere notes: tooth and face bone size is still decreasing over the last 20,000 years of the human evolution timeline!

The Cenozoic Era (66 million years ago through today) is the "Age of Mammals." Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age fossils like wooly mammoths.

Dinosaur Timeline. Scientists believe the earth was formed around 4,600 million years ago. By about 4,000 million years ago, the earth had cooled sufficiently for liquid water to appear, and the first life appeared soon after. For nearly 3,500 million years, all life was single-celled, but eventually multi-celled life evolved.

Fossil Fuels; Charts. Air pollution deaths from fossil fuels; Annual CO₂ emissions; Annual CO₂ emissions from coal; Annual CO₂ emissions from gas; Annual CO₂ emissions from oil; Annual change in coal energy consumption; Annual change in fossil fuel consumption; Annual change in gas consumption; Annual change in oil consumption

55 MYA (MILLION YEARS AGO) The evolution of the modern whale is traced back to the fossils of dogs that lived 55 million years ago, the anatomy of the animals inner ear matches that of the modern whale. The dogs, the Indohyus and the Pakicetus prowled the basins of rivers and lakes throughout the Himalayas.