PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER a7 
the Appalachians has ever appeared (Willard and Raymond, 1928). The prac- 
tice has been general of identifying Appalachian species with described forms 
from New York and Canada. These names have been applied without regard 
to facies, which has been, until recently, disregarded in the Appalachians. The 
vast stretch of elongated belts in the Valley thus afford almost virgin ground for 
the paleontologist. This monograph is testimony to this long neglect. The stra- 
tigraphy of the valley was not so long neglected, but it has been confused and 
misunderstood. 
IND. 1 
CENTRAL P 
;  *KENTLAND A. 
(UNION FURNACE) 
»STRASBURG 
/ “PENN LAIRD 
\ -COLLIERSTOWN 
BRIDGE pe *DUNKARD GHURCH 
UZ *CATAWBA VALLEY 
i “TA 
ee dled ZEWELL 
STORE_/ RYE ge es QUARRY 
HAGAN NY VE “MARI 
AGAIN, OVE srunpeZ TT 
Nee mes 
ee na ae cme. 
TENN. LONE MINN “EIDSON 
ROSE HILL**. *ST CLAIR aagrs MTN, 
ANDERSONVILLE | — 
CENTRAL *FLEANOR Wir os HOGSKIN 
VALLEY 
Gabe sLENOIR CITY J < 
SEQUATCHIE Y 
VALLEY * Sa pary FRIENDSVILLE 
HIWASSEE RIVER. — FRONT 
‘ 
"| ‘GHICKAMAUGA 
i \ CREEK . 
‘ — 
H i oN SS 
! 1 
| *ATTALLAL 
1 
eGATE CITY 
« CAHABA 
VALLEY 
*PRATT 
FERRY 
: 
¥ 
\ 
; 25 50 75 100 wnes 
i 
i 
Fic. 1.—Map showing location of sections in the Appalachians. 
For years the Appalachian stratigraphy has been explained on the theory that 
the Ordovician saw this area occupied by elongated seas separated by barriers. 
This view has now been displaced by the idea that the sediments of the Appa- 
lachian Valley were laid down in a normal geosyncline, and the long belts of 
varying types of sediment are best explained as facies developments. In this con- 
nection B. N. Cooper and I have prepared a detailed discussion of Appalachian 
stratigraphy based on facies, which is a collateral work to this monograph on 
the brachiopods and B. N. Cooper’s study of Appalachian trilobites. 
