202 EXTINCT MONSTERS. 
TABLE OF STRATIFIED Rocks—Continued. 
ss] 
2 Systems. Formations. 
vo 
Ay 
( PERMIAN or Red Sandstone, Marl Zech- 
| DYAS Magnesian Limestone, etc. stein 
| Red Sandstone and Conglomerate 
| Rothliegende 
Coal Measures and Millstone Grit 
UO) | CARBONIFEROUS { Carboniferous Limestone Series 
9 | DEVONIAN & OLD eae re Red Sandstone 
evonian 
© RED SANDSTONE-|| | ower Old Red Sandstone ; 
a Dominant 
= | Ludlow Series type 
Wenlock Series if 
< : 
Pu | eo) Llandovery Series Fishes 
24 May Fill Series 
oO | Bala and Caradoc Series 
=] | onpovicraw | Eire 
ss | Arenig and Skiddaw Series 
= | Tremadoc Slates 
~ CAMBRIAN Lingula Flags 
ral Menevian Series 
| Harlech and Longmynd Series 
| EOZOIC— { Pebidian, Arvonian, and Dimetian pe 
( ARCHEAN Huronian and Laurentian vertebeae 
