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INTRODUCTION 5
THE SECONDARY ISLAND 7
CHALK FORMATION 9
THE MOSASAURUS 10
THE PTERODACTYLE 11
WEALDEN FORMATION 14
THE IGUANODON 14
THE HYLÆOSAURUS 17
OOLITE FORMATION 19
THE MEGALOSAURUS 19
PTERODACTYLES OF THE OOLITE 22
TELEOSAURUS 22
LIAS FORMATION 25
ENALIOSAURIA 25
THE ICHTHYOSAURUS 25
ICHTHYOSAURUS PLATYODON 29
ICHTHYOSAURUS TENUIROSTRIS 30
ICHTHYOSAURUS COMMUNIS 30
PLESIOSAURUS 31
PLESIOSAURUS MACROCEPHALUS 31
PLESIOSAURUS DOLICHODEIRUS 32
PLESIOSAURUS HAWKINSII 33
NEW RED SANDSTONE 35
BATRACHIA 35
LABYRINTHODON SALAMANDROIDES 36
LABYRINTHODON PACHYGNATHUS 38
DICYNODON 38
[Illustration: {uncaptioned}]