PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER 95 
Walker Mountain sandstone member of Moccasin formation.—This 
name was proposed by Butts and Edmundson (1943, p. 1678) for the upper of 
the two sandstones in the Moccasin formation in the southwestern end of Walker 
Mountain. No type section is designated, but the best display of the member is 
said to be along Keywood Branch Road about 4 mile north of Seven Springs 
and along Virginia Highway 91, about a mile northwest of McCall Gap, Wash- 
ington County. No fossils have been named from the formation. It is composed 
of thick-bedded, gray, quartzose rock 8 to 12 feet thick. The name is not placed 
on the chart because it has little significance, but if it were placed there it would 
appear in the Marion and Porterfield Quarry columns. 
Ward Cove formation.—This formation was made by Cooper and Prouty 
(1943, p. 863) for a limestone on the southeast side of Clinch Mountain which 
overlies the Lincolnshire formation (Thompson Valley, according to Prouty) 
and underlies the Peery. The type section is along State Highway 91 at the 
northwest base of Clinch Mountain near Ward Cove, Tazewell County, Va. The 
lower part of the formation consists of an average of 60 feet of shell breccia and 
calcarenite (Thompson Valley of Prouty); the upper part is composed of 75 
to 150 feet of cherty medium- to fine-grained limestone, quite argillaceous in 
Burkes Garden and Thompson Valley. Prouty (1946, p. 1152) later named the 
shell breccia and calcarenite portion “Thompson Valley formation.” The Ward 
Cove formation is characterized by the fossil Nidulites pyriformis. Brachiopods 
are fairly common but are difficult to obtain in good condition. 
The formation has been recognized in several belts in East Tennessee where 
it deviates from the lithology of the type area. Biohermal masses of bryozoans 
occur in the belt passing through Elza, Tenn. 
Camerella unicosta Cooper 
Dactylogonia magnifica Cooper 
Fascifera sp. 1 
Glyptomena sp. 1 
Lepiellina sp. 
Lingula cf. L. nympha Billings = Ectenoglossa nymphoidea Cooper 
Lingula sp. 
Neostrophia sp. 1 
Oligorhynchia angulata Cooper 
O. bifurcata Cooper 
O. subplana Cooper 
Opikina transversa Cooper 
Oxoplecia gibbosa Cooper 
O. holstonensis Willard 
Paurorthis fascifera Cooper 
Plectocamara aseptata Cooper 
Plectorthis transversa Cooper 
Protozyga microscopica Cooper 
Schizambon cuneatum Willard 
Skenidioides mediocostatus Cooper 
Sowerbyella aequistriata (Willard) 
S. delicatula (Butts) = Leptellina delicatula (Butts) 
S. negritus (Willard) 
