Tetradellidae-?Piretellinae by Henningsmoen 1953, 
pe218,267] Ordovician, Estonia. 
RANAPELTIS [R. typicalis] Bassler 1941,p.26 [Thlipsuridae 
by Bassler] Devonian, Tennessee. 
RAYELLA [Basslerites hanseni Teichert 1937,p.117,pl.23, 
f.11-15] Teichert 1939,p.622, new name for 
Basslerites hanseni Teichert 1937,p.117, not 
Basslerites Howe, November 1, 1937. [Beecherellidae 
by Teichert, also by Kay 1940a,p.267, and Agnew 
1942,pe760] Ordovician, Greenland. 
RAYMONDATIA [R. goniglypta] Kay 1934,p.342-342 [Beyrichiidae 
by Kay; Tetradellidae by Swartz 1936,p.551; 
?Beyrichiidae-Piretellinae by Kay 1940a, p.266; 
Drepanellidae-Bassleratiinae by Schmidt 1941,p.50; 
Tetradellidae-Bassleratiinae by Henningsmoen 1953, 
pe219,267] Ordovician, Iowa. 
RECTOTRACHYLEBERIS [Cythereis hamata Muller 1894,p.373,pl.19, 
31] Ruggieri 1952b,p.38 [n.esubgen of Cythereis] 
Recente 
RETICESTUS [R. acclivitatus] Kesling and Weiss 1953,p.52 
[Kirkbyidae by K&W] Devonian, Michigan. 
REVERSABELLA [Renjorthi] Coryell and Johnson 1939,p.22l 
[= Sansabella Roundy by Cooper 1941,p.57,60; by 
Agnew 1942,p.760; by Scott 1942,pe154] Mississippian 
OLeeellamoasis 
164 
