PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER 65 
Fleanor formation.—This name is proposed by B. N. Cooper and G. A. 
Cooper for about 200 feet of maroon and red shale, thin gray limestones, silt- 
stone, and calcarenite. The name is taken from the exposures on a farm lane 
along Foster Branch near Fleanor Mill, 2 miles northeast of Heiskell, Powell 
Station (T.V.A. 137-SE) Quadrangle, Tenn. The formation contains: 
Rhipidomena mesleri Cooper Oligorhynchia subplana Cooper 
Mimella costellata Cooper Plectocamara sp. 
Correlation of Fleanor formation—The few fossils found in this formation 
clearly indicate correlation with the Hogskin member of the Lincolnshire 
formation. 
Gratton formation.—This name was applied by Cooper and Prouty (1943, 
p. 872) to a thick limestone occurring in Virginia between the Benbolt and 
Wardell formations in the belts northwest of Clinch Mountain. In general, the 
formation consists of a lower zone of straticulate calcilutite with mud-cracked 
surfaces and edgewise conglomerate ranging from 15 to 30 feet in thickness. 
The upper part of the formation averages about 60 feet of medium- to thick- 
bedded dove-gray calcilutite. Gratton fossils are difficult to identify, but Tetra- 
dium is abundant and Cryptophragmus is present. No brachiopods have been 
reported from the formation. The Gratton is a partial equivalent of the Wardell. 
Grazier member of Hatter formation.—This is dark, dense, heavy-bedded 
limestone with wavy partings, reaching 35 feet in thickness. The member was 
named by Kay (1944, p. 10), and its type section is at Union Furnace, Pa. In 
south-central Pennsylvania the member rests on the Eyer limestone, but to the 
northeast it overlies the Clover member of Loysburg formation. The thickness 
of the member decreases to the southeast, and it is only 7 feet thick in northern 
Path Valley. At Waterside, Pa., the base of the member is characterized by a 
coquina layer composed of Pionodema. The following brachiopods were seen: 
Glyptorthis sp. Pionodema sp. 
Mimella sp. Pionomena neumani Cooper 
Opikina sp. Strophomena sp. 
Correlation of Grazier member.—The presence of Pionodema indicates a cor- 
relation in the post-Benbolt suite. 
Greencastle bed (Bassler, 1919, p. 143).—Craig (1949, p. 739) suggests 
the abandonment of this name because the Greencastle in several sections is a 
confusion of parts of the Kauffman member of the Mercersburg formation. 
Furthermore, the section at Greencastle is poorly exposed and structural com- 
plications may have caused the repetition of Echinosphaerites and Nidulites. The 
formation probably belongs to the present Oranda formation. 
Hardy Creek formation.—This name was proposed by Miller and Brosge 
(1950) for even-bedded, tan, dense, fine-grained limestone with oval chert nod- 
ules in a few beds. The thickness varies from 93 to 150 feet. The formation is 
poorly fossiliferous. This formation underlies the Cane Creek limestone and 
