OCTONARIA [0. octoformis] Jones 1887b,p.404 [Thlipsuridae 
by Ulrich 1894,p.632] Silurian, England. 
OCTONARIELLA [0. typa] Bassler 1941,p.27 [Thlipsuridae by 
Bassler; = Strepulites by Warthin 1945, Thlipsuridae, 
card 43; and by Swain 1953,pe272] Devonian, Tennessee. 
OFFA [0O. barrandiana] Jones 1873b,p.409; Jones and Kirkby 
1874,p.-53 [Entomoconchidae by Ulrich 1894, p.632; 
and by Pribyl 1951,p.121]) Carboniferous, Ireland. 
OGMOCONCHA [0. contractula] Triebel 1941b,p.377 [Platycopa-- 
Healdiidae by Triebel] Liassic of Hanover. 
OGMOOPSIS [0. nodulifera] Hessland 1949,p.324 [Hollinidae-- 
Tetradellinae by Hessland; Sigmoopsiidae-- 
Sigmoopsiinae by Henningsmoen 1953,p.203,266] 
Ordovician, Sweden. 
OLIGANISCUS Neave 1940, vol.3,p.402, error for Oliganisus 
Geis 1932. 
i ar ee Se i =. 
mae AS 
OLIGANISUS [0. sulcatus] Geis 1932,p.158 (Kloedenellidae by 
eee ina aot 
Geis; Kloedenellidae-Kloedenellinae by Henningsmoen 
1953,p.242,270}] Mississippian of Indiana. 
OLIGOCYTHEREIS {Cythereis fullonica Jones and Sherborn 1888, 
pe256,pl.4,f.13] Sylvester=Bradley 1948d,p.795 
Trachyleberidae-Trachyleberinae by S=-B] Jurassic, 
England. 
ee ee OO a et Oe ee es a 
130 
