228 GLOSSOPTERIS AND ITS ALLIES, 



ON THE MODE OF ATTACHMENT OF THE LEAVES OR 

 FRONDS TO THE CAUDEX IN GLOSSOPTERIS ; 



WITH 



REMARKS ON THE RELATION OF THE GENUS TO 

 ITS ALLIES. 



By R. Etheridge, Jun, 

 (Paleontologist to the Australian Museum, and Palaeontolo- 

 gist AND Librarian to the Department of Mines, Sydney). 



WITH A NOTE ON ITS STRATIGRAPHICAL DISTRI- 

 BUTION IN AUSTRALASIA. 



By T. W. Edgeworth David, B.A., &c. 

 (Professor of Geology, &c., in the University of Sydney). 



(Plates xviii.-xix.) 



CONTENTS. PAGE 



1. Introduction 228 



2. Description of the Specimen 229 



3. Structure of the Genus Glossopteris 232 



4. Relation of the Mudgee Specimen to Glossopteris 238 



f». Relation of Glossopteris to Gangamopteris 240 



6. ,, ,, Sagenopteris ... ... ... ... 241 



7. ,, ,, Anthrophyopsis 246 



8. ,, ,, Dactylopteris 247 



9. General Conclusions 248 



10. Range of Glossopteris in Australasia 249 



1. Introduction. 



The genus Glossopteris is probably familiar to those possessing 

 but a limited knowledge of the Palaeonotology of N.S. Wales. So 

 intimately are the leaves or fronds of this plant, whichever the 



