62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 
Hogskin Valley, and Beaver Valley. The rock is dark limestone containing 
black chert. The type section is just north of Eidson, Kyles Ford (T.V.A. 
170-SE) Quadrangle. Brachiopods are: 
Dinorthis atavoides Willard 
Macrocoelia duplistriata Willard 
Sowerbyites triseptatus (Willard) 
Ellett formation (B. N. Cooper and G. A. Cooper).—This name is proposed 
for dark-gray limestones between the top of the Knox (Lower Ordovician) and 
the Botetourt in the belt east of Roanoke Valley. The formation contains equiva- 
lents of the Lenoir, Whistle Creek, and probably Lincolnshire. Silicified fossils 
are abundant at Ellett and in Catawba Valley. The type section is in the fields 
west of County Road 615, about 800 feet north of the Virginian Ry., near Ellett 
Station, Blacksburg (15’) Quadrangle, Montgomery County, Va. 
Camerella sp. Opikina sp. 5 
Hesperorthis longirostris Cooper Rostricellula multicostata Cooper 
Mimella gilberti Cooper Stenocamara perplexa Cooper 
Multicostella quadrata Cooper Valcourea austrina Cooper 
Elway formation.—B. N. Cooper (1945b, p. 42) proposed this name for 
part of Butts’ Blackford formation which yields a blocky chert when weathered. 
The rock is usually a fine-grained, light-gray limestone interbedded with layers 
of dark-gray to black chert. In places, near Gate City, Va., and in Clinch Val- 
ley, the limestone is often a gray calcarenite abounding in large ostracodes. The 
formation varies from 30 to slightly more than 70 feet in thickness. It is wide- 
spread in western belts of southwestern Virginia and Tennessee. The name is 
taken from Elway on U. S. Highway 19 near Lebanon, Russell County, Va., and 
the type section is near Blackford, Russell County. A few species of brachiopods 
are common: 
Camerella costellata Cooper Mimella intermedia Cooper 
C. indefinita Cooper Mimella sp. 1 
C. multiplicata Cooper Pionomena neumam Cooper 
C. perplexa Cooper Protozyga microscopica Cooper 
Dinorthis holdeni (Willard) Rhipidomena subparallela Cooper 
Lingulella decorticata Cooper 
Correlation of Elway formation.—This formation, by the presence of Rhipido- 
mena, belongs in the suite with Lincolnshire and Whistle Creek. The Elway 
may be a partial equivalent of the Whistle Creek because both formations con- 
tain Dinorthis holdem. 
Eyer member of Hatter formation.—Kay (1944, p. 7) proposed this name 
for a gray, granular limestone, ranging from 6 to 37 feet in thickness, which lies 
on the Clover member of the Loysburg formation and underlies the Grazier mem- 
ber of the Hatter formation. The Eyer is restricted to south-central Pennsyl- 
vania. The rock contains massive heads of Tetradium fibratum Safford. Kay 
(1944, p. 12) lists the following brachiopods: 
Campylorthis sp. = Chaulistomella sp. 
Glyptorthis sp. 
