pe2h3,245,271.] Mississippian, Wyoming. 
BALTICELLA [B. oblonga] Thorslund 1940,p.179. [Kloedenellidae 
by Thorslund; ?Beyrichiidae by Agnew 1942,p.757;3 
family uncertain by Henningsmoen 1953,p.273] 
Ordovician, Sweden. 
BARYCHILINA [B. puncto-striata] Ulrich 1891,p.198 [Bary- 
chilinidae by Ulrich 1897,p.632] Devonian, Kentucky. 
BARYCHILINIDAE Ulrich 1894,p.632 for the genera Barychilina 
and Kyammodes. 
BASSLERATIA [B. typa] Kay 1934,p.341 [Beyrichiidae by Kay; 
Tetradellidae by Swartz 1936,p.551; Beyrichiidae-- 
Piritellinae by Kay 1940a,p.265; Drepanellidae-- 
Bassleratiinae by Schmidt 1941,p.50; Tetradellidae-- 
Bassleratiinae by Henningsmoen 1953,p.219-267.] 
Ordovician, Ontario. 
BASSLERATIINAE Schmidt 1941,p.50 las subfam. of Drepanellidae] 
to include genera Bassleratia, Thomasatia, Bellor- 
natia, ?Raymondatia, ?Steusloffia, ?Polyzygia. 
BASSLERELLA [B. crassa] Kellett 1935,p.155 [Cytheridae by 
Kellett] Permian of Kansas. 
BASSLERELLA Howe 1935,pe30 [= Basslerites Howe 1937, nom. 
nov. ] 
15 
