PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER 61 
Doleroides ? ponderosus Cooper 
Eridorthis inexpectata Cooper 
Glyptambonites glyptus Cooper 
Glyptoglossa sp. I 
Glyptomena parvula Cooper 
Glyptorthis glypta Cooper 
Laticrura pionodema Cooper 
Leptellina pulchra Cooper 
L. tennesseensis Ulrich and Cooper 
Lingulella lirata Cooper 
L. subparallela Cooper 
Lingulella sp. 4 
Obolus ? virginiensis (Willard) 
Obolus sp. 5 
Oxoplecia abnormis Cooper 
O. depressa Cooper 
O. gibbosa Cooper 
O. holstonensis Willard 
Pachyglossa pachydermata Cooper 
Perimecocoelia semicostata Cooper 
P. triangulata Cooper 
Petrocrania ? magna Cooper 
Phragmorthis buttsi Cooper 
Pionomena ? dubia Cooper 
Productorthis agilera (Raymond) 
Protozyga tumida Cooper 
Pseudobolus sp. I 
Ptychoglyptus virginiensis Willard 
Piychopleurella medicostata Cooper 
P. rectangulata Cooper 
Scaphorthis perplexa Cooper 
Schizambon cuneatum Willard 
Schizotreta pannea (Willard) 
S. shulert (Willard) 
Skemdioides transversus Cooper 
Sowerbyella negritus (Willard) 
Spondylotreta ? declivis (Willard) 
Taphrorthis peculiaris Cooper 
Titanambonites crassus Cooper 
Correlation of Effna formation.—A glance over the faunal list will show that 
the Effna formation is related to the Arline formation of Tennessee and southern 
Virginia, the Little Oak formation of Alabama, the Botetourt formation (or 
member) of central and northern Virginia, and the Cyrtonotella zone of the 
Edinburg formation. A few species such as Bimuria superba occur in the Arline 
and the Effna. Ptychoglyptus appears to be confined to this suite of formations. 
In Catawba Valley not only the fauna relates the Effna to the Botetourt but the 
fact that the two interfinger indicates a close relationship between them. In the 
Porterfield Quarry the Effna limestone is underlain by a thin, dark, siliceous 
limestone that appears to be a tongue of the Arline formation. 
Eggleston formation.—This name is applied to the dark-gray calcareous 
mudrocks overlying the Moccasin formation and underlying the Martinsburg 
formation (Curdsville). Parts of the limestone, particularly those associated 
with metabentonites, are characterized by cuneiform jointing. Two thick meta- 
bentonites appear in the upper part of the section and can be seen in many places. 
This formation appears in the western belts of southwestern Virginia and East 
Tennessee on the northwest slope of Wallen Ridge from Tennessee nearly to 
Big Stone Gap, and throughout Russell and Giles Counties, Va. 
The following brachiopods have been reported: 
Dalmanella rogata (Sardeson) = Paucicrura rogata (Sardeson) 
Pholidops sp. = Craniops sp. 
Rafinesquina alternata (Conrad) = Rafinesquina trentonensis (Conrad) 
*R. minnesotensis (N. H. Winchell) = Opikina minnesotensis (N. H. Winchell) 
*Strophomena incurvata (Shepard) 
Zygospira recurvirostris (Hall) 
Eidson member of Lincolnshire formation—This name (B. N. Cooper 
and G. A. Cooper) is used for the thinned portion of the Lincolnshire formation 
underlying the Hogskin shale in the belts where that is present: Clinch Valley, 
