FOSSIL VERTEBRA TES— REPTILIA 735 
The genus Crocodilus appeared in the Cretaceous of France. 
Remains are known from the Tertiary deposits of both the old 
and the new worlds as late as Pliocene time, when they seem to 
have disappeared from all regions except those in which they 
are still found, tropical Africa, South America, and the East 
Indies. 
The connection between the various groups of reptiles may 
be seen from the following table, which is slightly modified from 
one published by Baur. 
Recent. 
Tertia ry: 
Cretaceous. 
Crocodilita. 
£ 
aI 
iS 
E 
g 
S 
Jurassic. 
Dikynodontra. 
Triassic. 
Pell ycosaurta. 
Sauromammalia. 
Proganosauria. 
Bae. CASE: 
REFERENCES. 
Cope, E. D., Syllabus on the Vertebrata. Publication of the University of Penn- 
sylvania, 1898 (a syllabus of lectures prepared by Professor Cope, and published 
after his death. It contains his most recent views on the phylogeny of the extinct 
forms). 
