PART I 
CHAZYAN AND RELATED BRACHIOPODS—COOPER 
ANNOTATED LIST OF GENERA AND SPECIES—Continued 
Species 
O. multicostellatus Cooper 
O. neumani Cooper 
O. occidentalis Cooper 
O. parvicrassicostatus Cooper 
O. paucicostatus Cooper 
O. rectangulatus Cooper 
O. rotundiformis Cooper 
O. subconvexus Cooper 
O. tennesscensis Cooper 
O. tenuicostatus Cooper 
Orthidiella carinata Ulrich 
and Cooper 
O. costellata Cooper 
O. extensa Ulrich and Cooper 
O. longwelli Ulrich and Cooper 
Orthidiella sp. 1 
Orthidium bellulum Ulrich 
and Cooper 
O. fimbriatum Cooper 
O. gemmiculum (Billings) 
O-xoplecia abnormis Cooper 
O. costellata Cooper 
O. depressa Cooper 
O. eidsonensis Cooper 
SPECIES 
Stage Formation 
Porterfield- Edinburg 
Wilderness (Cyrt. zone), 
Oranda 
Porterfield Tellico 
Whiterock Upper Pogonip 
(Rhysostrophia 
zone) 
Porterfield Effna, Botetourt, 
Chatham Hill, 
Benbolt 
Whiterock Upper Pogonip 
(Rhysostrophia 
zone) 
Porterfield Shippensburg 
(Pinesburg ) 
Porterfield Athens 
Whiterock Oil Creek 
Porterfield Arline, Botetourt, 
Little Oak 
Porterfield Pratt Ferry 
Whiterock Upper Pogonip 
(Orthidiella 
zone) 
Whiterock Upper Pogonip 
(Orthidiella 
zone) 
Whiterock Upper Pogonip 
(Orthidiella 
zone) 
Whiterock Upper Pogonip 
(Orthidiella 
zone) 
Whiterock Upper Pogonip 
(Orthidiella 
zone) 
Whiterock Upper Pogonip 
(Rhysostrophia 
zone) 
Whiterock Table Head 
Whiterock Boulders in Lévis 
cgl. (No. 2) 
Porterfield Effna 
Ashby Whistle Creek 
Porterfield Effna 
Ashby Lincolnshire 
Geographic 
location 
Va. 
Nev. 
Md. 
Tenn. 
Okla. 
Tenn. 
Ala. 
Nev. 
Nev. 
Nev. 
Nev. 
Nev. 
Nev. 
Newfoundland 
Quebec 
Va. 
Va. 
Va. 
Tenn., Va. 
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