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قراءة كتاب Animals of the Past

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‏اللغة: English
Animals of the Past

Animals of the Past

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دار النشر: Project Gutenberg
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ANIMALS OF THE PAST

 

BY
FREDERIC A. LUCAS

Curator of the Division of Comparative Anatomy,
United States National Museum

 

FULLY ILLUSTRATED

 

NEW YORK
McCLURE, PHILLIPS & CO.
1901

 

Copyright, 1900, by S. S. McClure Co.
1901, by McClure, Phillips & Co.

 

Published November, 1901.

 


TABLE OF CONTENTS


INTRODUCTORY AND EXPLANATORY

Use of scientific names,xvi; estimates of age of earth,xvii; restorations by Mr. Knight,xviii; Works of Reference,xix.

I. FOSSILS, AND HOW THEY ARE FORMED

Definition of fossils,1; fossils may be indications of animals or plants, 2; casts and impressions,3; why fossils are not more abundant,4; conditions under which fossils are formed,5; enemies of bones,6; Dinosaurs engulfed in quicksand,8; formation of fossils,9; petrified bodies frauds,10; natural casts,10; leaves,13; incrustations,14; destruction of fossils, 15; references,17.

II. THE EARLIEST KNOWN VERTEBRATES

Methods of interrogating Nature,18; thickness of sedimentary rocks,20; earliest traces of life,21; early vertebrates difficult of preservation,22; armored fishes,23; abundance of early fishes,25; destruction of fish,26; carboniferous sharks,29; known mostly from teeth and spines,30; references, 32.

III. IMPRESSIONS OF THE PAST

Records of extinct animals,33; earliest traces of animal life, 34; formation of tracks,35; tracks in all strata,36; discovery of tracks,37; tracks of Dinosaurs,39; species named from tracks,41; footprints aid in determining attitude of animals, 43; tracks at Carson City,45; references,47.

IV. RULERS OF THE ANCIENT SEAS

The Mosasaurs,49; history of the first known Mosasaur,50; jaws of reptiles,53; extinction of Mosasaurs,55; the sea-serpent, 56; Zeuglodon,58; its habits,[email protected]@[email protected]@[email protected]@[email protected][email protected]#Page_59"

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