170 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 
ANNOTATED LIST OF GENERA AND SPECIES—Continued 
Species 
O. filosa Cooper 
O. gibbosa Cooper 
O. globularis Cooper 
O. gouldi Ulrich and Cooper 
O. holstonensis Willard 
O. magnaplicata Cooper 
O. marmorata Cooper 
O. monitorensis Cooper 
O. multicostellata Cooper 
O. nevadensis Cooper 
O. occidentalis (Butts) 
O. parva Cooper 
O. pennsylvanica Cooper 
O. planiventra Cooper 
O. planulata Cooper 
O. plicata Cooper 
O. recta Cooper 
O. simulatrix (Bassler) 
Pachyglossa biconvexa 
Cooper 
P. dorsiconvexa Cooper 
P. ? elderi (Whitfield) 
P. pachydermata Cooper 
SPECIES 
Stage Formation 
Porterfield Bromide 
(Mountain Lake) 
Porterfield Effna, Ward Cove, 
Red Knobs, 
Little Oak 
Trenton Martinsburg 
(Salona) 
Porterfield Bromide 
(Pooleville) 
Porterfield Effna, Botetourt, 
Whitesburg, 
Red Knobs, 
Liberty Hall 
Porterfield Shippensburg 
(Pinesburg) 
Porterfield Red Knobs 
Ashby or Yellow ls. on 25’ 
Porterfield ss. at base of 
Eureka group 
Porterfield Benbolt, Sevier, 
Chatham Hill, 
Edinburg 
(Cyrt. zone) 
Wilderness Dark beds under 
Eureka quartzite 
Wilderness Bromide 
(Pooleville? ) 
Porterfield Benbolt 
Trenton Salona 
Porterfield Sevier 
Wilderness Carters 
Porterfield Red Knobs 
Ashby Lincolnshire, 
Lincolnshire 
(Hogskin) 
Wilderness Oranda 
Wilderness Bromide 
( Pooleville) 
Porterfield Pratt Ferry 
Wilderness Platteville 
(McGregor), 
Decorah 
(Spechts Ferry) 
Porterfield Effna, Botetourt, 
Benbolt, 
Chatham Hill, 
Pratt Ferry 
Geographic 
location 
Okla. 
Ala., Tenn., 
Va. 
Md. 
Tenn. 
Nev. 
Tenn., Va. 
Nev. 
Okla. 
Va. 
Pas 
Tenn. 
Ala. 
Tenn. 
Tenn. 
Md., Pa., Va. 
Okla. 
Ala. 
Minn., Wis. 
Ala., Va. 
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