文档介绍：JUST THE F
ACTS
PREHISTORIC WORLD
A fact-by-fact look at the history of life on Earth, from the
anisms to the ascent of early man.
• Statistics on every geological period.
• Maps and diagrams.
• Full-color photographs and illustrations.
The most up-to-date information available, presented in
a unique, easy-reference system of lists, fact boxes,
tables, and charts.
Find the fact you need in seconds with
JUST THE FACTS!
School Specialty Publishing
®
INFORMATION AT YOUR FINGERTIPS INFORMATION AT YOUR FINGERTIPS INFORMATION AT YOUR FINGERTIPS
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ISBN 0-7696-4258-6
EAN
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INFORMATION AT YOUR FINGERTIPS INFORMATION AT YOUR FINGERTIPS INFORMATION AT YOUR FINGERTIPS INFORMATION AT YOUR FINGERTIPS
PREHISTORIC
WORLD
CONTENTS
HOW TO USE THIS BOOK....................................................................................4 JURASSIC DINOSAURS........................................................................................32
• Dinosaur types • A dinosaur landscape • Stegosaurus
THE AGE OF THE EARTH ........................................................................................6
• Diplodocus
• Oldest minerals, rocks and meteorites • The Precambrian eon
• Phanerozoic eon to present day • Major events • Previous estimates CRETACEOUS PERIOD............................................................................................34
of the age of the Earth • Geological timescale • The world in the Cretaceous period • Diverse dinosaurs
• Meaning of the name • Tylosaurus • Animals of air and sea
PLATE TECTONICS ..........................................................................................................8
• Elasmosaurus • Kronosaurus • Arambourgiana
• Continental drift • Seafloor spreading • Another theory
• Some speeds • Features of the Earth caused by plate movement CRETACEOUS DINOSAURS....................................................