PART I 
CHAZYAN AND RELATED BRACHIOPODS—COOPER 
ANNOTATED LIST OF GENERA AND SPECIES—Continued 
Species 
O. longirostris (Billings) 
O. matutina Cooper 
O. obesa Cooper 
O. tenuis Cooper 
Onychoplecia sp. 1 
Opikina alata Cooper 
O. bellula Cooper 
O. clara (Okulitch) 
O. dorsatiformis Cooper 
O. ? dubia Cooper 
O. eximia Cooper 
O. expatiata Cooper 
O. extensa Cooper 
O. formosa Cooper 
O. glabella Cooper 
O. gregaria Cooper 
O. inquassa (Sardeson) 
O. lirata Cooper 
O. maja Cooper 
O. matutina Cooper 
O. minnesotensis 
(N. H. Winchell) 
O. nasuta Cooper 
O. parvula Cooper 
O. ? planulata Cooper 
O. pulchella Cooper 
O. quadrata Cooper 
O. septata Salmon 
O. speciosa Cooper 
O. subplanodorsata Cooper 
SPECIES 
Stage Formation 
Marmor Mingan 
Marmor Jasper, Everton 
Marmor Row Park 
Porterfield Bromide 
(Mountain Lake) 
Porterfield Chota 
Porterfield Edinburg 
(Nidulites zone) 
Porterfield Edinburg 
(Cyrt. zone), 
Shippensburg 
Wilderness Chaumont 
Porterfield Edinburg 
(Nidulites, 
Cyrtonotella 
zone) 
Porterfield Botetourt 
Wilderness Lebanon, Camp 
Nelson 
Porterfield Bromide 
(Mountain Lake) 
Wilderness Bromide 
(Pooleville) 
Wilderness Bromide 
(Pooleville) 
Porterfield Arline 
Porterfield Bromide 
(Mountain Lake) 
Wilderness Decorah 
(Guttenberg) 
Trenton Decorah (Ion) 
Wilderness Ridley 
Porterfield Arline 
Wilderness Platteville 
(McGregor) 
Porterfield Chatham Hill 
Porterfield Benbolt 
Wilderness Pierce 
Porterfield Benbolt 
Wilderness Ridley 
Wilderness Lebanon 
Wilderness Ridley, Wardell, 
Dryden, Pierce 
Wilderness Wardell 
Geographic 
location 
St. Lawrence 
River, 
Quebec 
Ark. 
Pa., Md. 
Okla. 
Tenn. 
Via 
Md., Va. 
Quebec 
Va. 
Va. 
Ky., Tenn. 
Okla. 
Okla. 
Okla. 
Tenn. 
Okla. 
Minn. 
Minn. 
Ga. 
Va. 
Ill., Minn., 
Wis. 
Va. 
Va. 
Tenn. 
Va. 
Tenn. 
Tenn. 
Ga., Tenn., 
Va. 
Tenn., Va. 
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