JOC: OF GROLOGY 
MAY-JUNE, @&95. 
MESOZOIC (CHANGES IN THE FAUNA GEOGRAPHY 
OF CAC INORIN VAG 
CONTENTS. 
INTRODUCTION. 
PRE-CARBONIFEROUS RELATIONS. 
Cambrian and Silurian. 
Devonian. 
CARBONIFEROUS FAUNAS. 
Lower Carboniferous. 
Affinities of the Fauna. 
Upper Carboniferous. 
Post-PALHOZOIC REVOLUTION. 
TRIASSIC FAUNAS. 
Lower Trias. 
Middle Trias. 
Upper Trias. 
JURA. 
Lias. 
Middle Jura. 
Upper Jura. 
Lower Malm. 
Transgression of the Upper Malm. 
CRETACEOUS. 
Knoxville. 
Horsetown. 
Upper Cretaceous — Chico. 
SUMMARY. 
INTRODUCTION. 
THERE is probably no region where the successive faunas 
have been a genetic series. With each new set of rocks species, 
genera, families appear without local forerunners and disappear 
without leaving local descendants. Thus the distribution of 
Vou. III., No. 4. 369 
