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A Trip Through Geologic Time
A Trip Through Geologic Time

... • Began with “Cambrian Explosion” of new life forms, due to preceeding mass extinction. • Abundant sea life. First fishes appear, first amphibians evolved from fishes, first reptiles evolved from amphibians. • First terrestrial life (arthropods & other invertebrates) invades from sea. • Carboniferou ...
geological time scale - Liberty Union High School District
geological time scale - Liberty Union High School District

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Why is Earth Unique? - Bakersfield College
Why is Earth Unique? - Bakersfield College

... • The accretion of Pangaea resulted in: • collision of northern Europe with Greenland  Caledonian Mountains-A • joining of northern Asia (Siberia) and Europe  Ural Mountains- B • Joining of North Africa and Eastern U.S.  Appalachian Mountains- C During the formation of the Appalachian Mountains, ...
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... the history of south west England from here, starting down in the south with the Devonian rocks, named after the county of Devon, the only comparable area in the world with a whole period of time named after it. You can also see red rocks down towards Teignmouth and Torbay and these red rocks, you s ...
Slide 1
Slide 1

... • The accretion of Pangaea resulted in: • collision of northern Europe with Greenland  Caledonian Mountains-A • joining of northern Asia (Siberia) and Europe  Ural Mountains- B • Joining of North Africa and Eastern U.S.  Appalachian Mountains- C During the formation of the Appalachian Mountains, ...
Chapter 14 The History of Life
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The History of Life
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Phanerozoic

The Phanerozoic /ˌfænərɵˈzoʊɪk/ (British English Phanærozoic) is the current geologic eon in the geologic time scale, and the one during which abundant animal and plant life has existed. It covers 541.0 ± 1.0 million years and goes back to the period when diverse hard-shelled animals first appeared. Its name derives from the Ancient Greek words φανερός (fanerós) and ζωή (zo̱í̱), meaning visible life, since it was once believed that life began in the Cambrian, the first period of this eon. The time before the Phanerozoic, called the Precambrian supereon, is now divided into the Hadean, Archaean and Proterozoic eons. Plant life also appeared from early in the Phanerozoic eon.The time span of the Phanerozoic includes the rapid emergence of a number of animal phyla; the evolution of these phyla into diverse forms; the emergence and development of complex plants; the evolution of fish; the emergence of insects and tetrapods; and the development of modern faunas. During this time span tectonic forces caused the continents to move and eventually collect into a single landmass known as Pangaea, which then separated into the current continental landmasses.
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