82 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 
Eoplectodonta alternata (Butts) O. multicostellatus Cooper 
E. ? triradiata (Butts) Oxoplecia simulatrix (Bassler) 
Furcitella plicata Cooper Parastrophina sp. 2 
Glyptambonites musculosus Cooper Paterula perfecta Cooper 
Hesperorthis virginiensis Cooper Ptychopleurella sulcata Cooper 
Laticrura magna Cooper Rafinesquina planulata Cooper 
Leptaena ordovicica Cooper Reuschella americana Cooper 
Leptellina abbreviata Cooper Schizotreta microthyris Cooper 
Lingulasma compactum Cooper Skenidioides rectangulatus Cooper 
Lingulasma sp. 1 Sowerbyella cava Cooper 
Nicolella strasburgensis (Butts) S. eximia Cooper 
Orbiculoidea linnvillensis Cooper Strophomena bellilineata Cooper 
Orthambonites bielsteini Cooper 
Correlation of Oranda fauna.—Perhaps the most striking feature of this fauna 
is its close similarity generically to the faunas of the Arline, Effna, Pratt Ferry, 
and lower Edinburg formations. The relationship to the Stinchar-Balclatchie 
formation of the Girvan district, Scotland, is also striking. It seems obvious 
that the Oranda fauna is a recurrence of the Arline fauna but with modifications 
that give it the stamp of the Trenton. These younger elements among the brachi- 
opods are Strophomena, Rafinesquina, Dalmanella, Leptaena, Parastrophina, and 
Furcitella. The latter is similar to F. schofieldi of the Prosser of the Mississippi 
Valley. 
Kay (1948, p. 1402) places the Oranda opposite the Shoreham member of 
the Sherman Fall formation in his correlation table. The Oranda distinctly 
underlies the zone of abundant Cryptolithus trilobites although this trilobite also 
occurs in it. Cryptolithus, however, is a rare fossil in the Oranda. Reuschella 
is another Sherman Fall guide fossil, but the Virginia representative of this genus 
is clearly a different species from the Vermont R. edsoni. It is the writer’s belief 
that the Oranda formation, by virtue of its position, is pre-Sherman Fall. 
The Oranda formation is also closely related to the Prosser formation because 
of the presence of Echinosphaerites and the brachiopod Furcitella. In the Appa- 
lachians the Oranda is directly referable to the Rodman formation of Butts. 
Ottosee formation (=facies).—This is a facies ranging in age from the 
Hogskin member of the Lincolnshire formation through the Wardell formation. 
As applied by some Appalachian workers the name has been used for any of the 
yellow-weathering shales regardless of age. The name is also applied to cobbly 
limestone in the western belts of Virginia and an assortment of other rocks. The 
type section is at Chilhowee Park in Knoxville, and this part of the section is 
probably equivalent to the Benbolt formation. The name is better dropped from 
the Appalachians and is therefore not used in this monograph. 
Paperville formation (B. N. Cooper and G. A. Cooper).—This unit com- 
prises a thick succession of gray siltstones, black graptolitic shales and interbedded 
black limestones, and brown-weathering calcareous sandstones which Keith 
mapped as Athens in southeastern belts of the Appalachian Valley in Tennessee. 
These beds form the lower division of a buff-weathering shale-siltstone-sand- 
stone succession totaling several thousand feet in thickness, succeeding the thin 
