Lower Devonian. Middle Devonian, Upper Devonian. 
§2 
NAUTTLOIDEA. 
Eifel 
(Kayser), 
Cypridinen-Scliie- 
fer. 
Goniatiten - Sch iefer . 
Cuboides-Kalk and 
Mergel, 
Strin gocepha len - 
Kalk with Cri- 
noiden-Schicht 
at the base. 
Calceola-Mergel 
and Kalk. 
Cultrij ugatus-Stufe. 
Waxweiler Grau- 
wacke. 
Yichter Schichten. 
Grauwacken of 
Stadtfeld - Daun ; 
Hunsriick - Schie- 
fer ; Tauuus- 
Quarzit. 
Divisioifs AND Parallelisms of th 
Aachen district 
(K a3'ber). 
Nassau 
and Westphalia 
(Sandberger 
and Kayser), 
North- 
western Hartz 
(F. A, Eoemer 
and others). 
Verneuili - Sand- 
stein. 
Clymenien-Kalk of 
Dillenburg and | 
Cypridinen - Schie- 
fer of Lautenthal. 
Verneuili-Schiefer, 
Cuboides-Scbichten 1 
(Verneuili-Schiefer, 
of Ferd. Eoemer). : 
i 
1 
Enkeberg. | 
Cydridinen - Schie- 
fer and Sandsteine 
of Nehden. 
Goniatiten - Kalk 
of Bicken, Ober- 
scheld and Adorfj 
(Intiimescens- 
Stufe). 
1 
Kramenzelkalk of 
Schulenberg. 
Donianiksch iefer of 
Altenau. 
Iberger Kalk. 
Stri n gocepbalen- 
Kalk. 
Stringocephalen- 
Kalk of Diez, Bri- 
lon, Bensberg. 
Stringocephalen- 
Kalk of Bunten- 
bock and Polster- 
berg. 
Wanting. 
• 
Calceola-Schiefer of 
Auerhahn and 
Schalkertkal. 
Schalstein. 
Grauwacken-Sch ie- 
fer, with inclusions 
from the Eifeler 
Kalk. 
Eote Schichten. 
Dunkle Grau- 
wacken. 
Griine Grauwacken 
with griinen and 
roten Schiefern. 
Grobes rotes Kon- 
glomerat. 
Orthoceratiten- 
Schiefer of Wissen- 
bach. 
Spiriferen-Sand- 
stein = Coblenz- 
Schichten, Huns- 
riick Schiefer,Tau- 
nus-Quafzit. 
Speciosus-Schich- 
ten. 
Spiriferen-Sand- 
stein of Kahlen- 
berg and of the 
Schalke. 
Bruchberg Quarzit. 
