Chapter 3

Who estimated the Earth to be around 20 million years old? Lord Kelvin

If an element nucleus has too many or few neutrons, it becomes unstable, which is the basis for radioactivity

Fossils of an organism is called a body fossil

A fossil of footsetps or leads to an organism is called a trace fossil

Locations on Earth with exceptional preservation of fossil Lagerstätten

An effect that can show incorrect time from an extiniction of a species due to incomplete fossil record Signor Lipps effect

How many mass extinctions has there been? Five

Which of the mass extinctions was the largest? The third one

When during the Cenozic did we reach a wamrth maximum? 50 Ma

When during the Cenozic did we reach a a rapid global cooldown? 35 Ma

When during the Cenozic did rocks starting taking in CO2, providing further temp decline? 26 Ma - 12 Ma

A stromatolite is bacterial biofilm colonies, rare today

When did the Great Oxygenation Event take place? 2.4 Ga

When did the origin of Eukaryota take place? 1.6 Ga

When did the Ediacaran "fauna" take place? 610-540 Ma

When did the Cmabrian explosion take place? 540 Ma

When did plants take place on land? 500 Ma

When did the Devonian time take place? 420-260 Ma

Whats the time of large reptiles called? The Mesozoic

What's the time of the mammals called? The Cenozoic

Whats the time of diverse and large mammals called? The Miocene

Whats the time for cold-adapted megafauna called? The Pleistocene

What are the most important three types of biomarkers? Lipids, proteins and DNA

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