PART I 
CHAZYAN AND RELATED BRACHIOPODS—COOPER 
ANNOTATED LIST OF GENERA AND SPECIES—Continued 
Species 
Leptaena ordovicica Cooper 
Leptellina abbreviata Cooper 
L. bella Cooper 
L. delicatula (Butts) 
L. incompta Cooper 
L. occidentalis Ulrich and 
Cooper 
L. platys Cooper 
L. primaria Cooper 
L. pulchra Cooper 
L. subcarinata Cooper 
L. sublamellosa Cooper 
L. tennesseensis Ulrich and 
Cooper 
L. transversa Cooper 
Leptellina sp. 1 
Leptobolus walcotti 
Ruedemann 
Leptobolus ? sp.1 
Leptobolus ? sp. 2 
Limbimurina brevilimbata Cooper Porterfield 
L. insueta Cooper 
SPECIES 
Stage Formation 
Porterfield- Oranda, Rodman, 
Trenton Rysedorf, Carters, 
Edinburg 
(Cyrt. zone), 
Martinsburg 
(Salona), Salona, 
dark shale under 
Eureka quartzite 
Wilderness Oranda 
Porterfield Whitesburg, 
Chatham Hill 
Porterfield Little Oak 
Wilderness Dark shale under 
Eureka quartzite 
Whiterock Upper Pogonip 
(Rhysostrophia 
zone) 
Porterfield Benbolt 
Marmor Crown Point 
Porterfield Botetourt, Effna, 
Pratt Ferry, 
Rich Valley, 
Benbolt, 
Liberty Hall 
Porterfield Athens 
Porterfield Benbolt, 
Chatham Hill 
Porterfield Arline, Red Knobs, 
Little Oak, 
Effna, Botetourt, 
Tellico, Fetzer 
Porterfield Arline 
Porterfield Edinburg 
(Cyrtonotella 
zone) 
Porterfield- Normanskill 
Wilderness 
Porterfield- Edinburg 
Wilderness (Liberty Hall) 
Porterfield- Edinburg 
Wilderness (Liberty Hall) 
Edinburg 
(Cyrt. zone), 
Botetourt 
Wilderness Rodman 
Geographic 
location 
Ala., N. Y., 
Pa., Va., 
Nev. 
Va. 
Tenn., Va. 
Ala. 
Nev. 
Nev. 
Va 
N.Y., Vt. 
Ala. .Via. 
Tenn. 
Va. 
Ala., Tenn., 
Va. 
Va. 
Va. 
Pa: 
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