228 
Genera and Species. 
Authors and References. 
PalasozoicSystems. 
Localities. 
Sil. 
Dev. 
Carb. 
Perm. 
Saurians. 
Protorosaurus 
Herm. v. Meyer. 
— Speneri 
id. in Munst. Beitr. heft 5. p. 1. pl.8. f. 1 ; 

E. 
Mansfeld,Gliicksbrunn, Eisleben. 
Monitor antiquus, Holl ; Mon. Foss, de 
Thur. Cuvier; Miscell. Berolinensia, 
1710, p. 99| ; Link Act. Erudit. Lipsiae, 
1718, pi. 1 1 ; Gein. Gsea v. Sachs, p.93. 
Thecodontosaurus 
Riley and Stutchb. 
— antiquus 
E. 
Redland near Bristol. 
Palseosaurus 
Riley and Stutchb. 
cylindrodon 
Rilev, Geol. Tr. 2ndser. v. pi. 29. f. 4... 
E. 
ibid. 
— platyodon 
E. 
ibid. 
Rhopalodon 
Fisch. 
— Vangenheimi 
Fisch.Bull. Soc. d. Moscou,1841, p. 460. 
R. 
pi. 7. 
( Bielebei ). 
Brithopus 
Orthopus 
primsevus 1 Kutorga Beitr.zurKenntn. 
1 
R. 
Syodon 
biarmicum J Ural, 1838. 
J 
Observations. 
These 3 genera 
require further 
examination. 
RECAPITULATION OF THE FAUNA OF THE PERMIAN SYSTEM IN EUROPE. 
Classes. 
Genera. 
Total Number of Species 
in Europe. 
Species exclusively peculiar 
to the Permian System in 
Europe. 
Species found in older 
formations. 
Species found in Russia. 
a. 
Peculiar 
to that 
country. 
b. 
Previously found elsewhere. 
a'. 
In the Permian 
and older for- 
mations. 
b’. 
In the Permian 
beds ex- 
clusively. 
In older forma- 
tions exclu- 
sively. 
Polyparia 
7 
16 
13 
2 
3 
i ? 
2 
Echinodermata 
2 
2 
1 
1 
Conchifera, Ord. Brachiopoda ... 
7 
30 
20 
10 
8 
3 
4 
5 
Ord. Dimyaria 
10 
26 
26 
8 
3 
Ord. Monomyaria ... 
5 
16 
15 
1 
4 
3 
Mollusca, Ord. Gasteropoda 
11 
22 
19 
3 
3 
Ord. Cephalopoda .... 
1 
3 
3 
... 
i 
Annelida 
1 
2 
2 
Crustacea 
2 
2 
2 
2 
16 
43 
42 
1 
2 
4 
5 
5 
1 
Total 
66 
166 
148 
18 
32 
3 or 4 
12 
5 
We much regret that this table has been drawn up without the benefit of the long-promised assistance of Professor Agassiz. His observa- 
tions on a few of the Permian ichthyolites of Russia which we submitted to him, may increase the number in that class of fossils. 
