XXV1 PERMIAN FOSSILS. 
the determination of Von Meyer, of Labyrinthodont forms (4rchzgosaurus and Sclero- 
cephalus) in the Coal-measures of Germany, shows that there is a strong reptilian con- 
nexion between the Carboniferous, and Triassic systems.. The Thecodonts of the 
Kupfer-schiefer, and Magnesian Conglomerate, certamly do not link together the 
Reptiles of the Carboniferous and Triassic systems ; but, on hypothetical grounds, we 
are warranted in anticipating, that future researches will establish a more intimate 
reptilian connexion than at present prevails between these systems, and the one 
intermediate to them—the Permian. 
Considering the foregoing premises, it may, I think, be safely concluded, that the 
Permian system is, by its Flora and Fauna, united both to the Carboniferous, and 
Triassic systems ;—strongly so in generic respects; but more to the former than to the 
latter: there is also a specific connexion between them; but it is slighter than the 
generic; and it is strongest between the Permian, and Carboniferous systems. 
These conclusions are quite in accordance with the view taken by Sir Roderick I. 
Murchison of the value and position of the Permian deposits ;—that is, in considering 
them as a separate group co-ordinate with, and intermediate to, the Carboniferous and 
Triassic systems,—and including them in the Protozoic, rather than in the Deuterozoic 
period. 
The present subject may be concluded by drawing the reader’s attention to the 
annexed Tables, which show the geographical and geological distribution of the plants 
and animals known to belong to the Permian system. 
1 Foot impressions of supposed Labyrinthodents have been observed in the Devonian rocks of the 
United States by M. Conrad. 
