Animals of the Past

by Frederic A. Lucas

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,[59]; Koch's Hydrarchus, 61; bones collected by Mr. Schuchert,[63]; abundance of sharks,[64]; the great Carcharodon,[65]; arrangement of sharks' teeth,[67]; references,[68].

V. BIRDS OF OLD

Earliest birds,[70]; wings,[71]; study of young animals,[73]; the curious Hoactzin,[74]; first intimation of birds,[76]; Archæopteryx, 77; birds with teeth,[78]; cretaceous birds,[79]; Hesperornis, 80; loss of power of flight,[81]; covering of Hesperornis, 82; attitude of Hesperornis,[83]; curious position of legs,[84]; toothed birds disappointing,[85]; early development of birds,[86]; eggs of early birds,[87]; references,[88].

VI. THE DINOSAURS

Discovery of Dinosaur remains,[90]; nearest relatives of Dinosaurs, 91; relation of birds to reptiles,[92]; brain of Dinosaurs, 93; parallel between Dinosaurs and Marsupials,[95]; the great Brontosaurus,[96]; food of Dinosaurs,[97]; habits of Diplodocus,[99]; the strange Australian Moloch,[100]; combats of Triceratops,[101]; skeleton of Triceratops,[102]; Thespesius and his kin,[104]; the carnivorous Ceratosaurus,[106]; Stegosaurus, the plated lizard,[106]; preferences,[109].

VII. READING THE RIDDLES OF THE ROCKS