YOUNGIELLA [Youngia rectidorsalis Jones and Kirkby 1886, 
pe515 = Youngiella rectidorsalis Jones and Kirkby 
1895,p.456,pl.21,fog.5a-d) Jones and Kirkby 1895, 
pe456, nomenov.e, for Youngia [Youngiellidae by 
Kellett 1933,p.103] Carboniferous, England. 
YOUNGIELLIDAE Kellett 1933,p.103, a family to include 
Youngiella and Moorites. Henningsmoen 1953, p.2h6, 
273 adds: ?Moorea, and ?Hardinia. 
ZABOROVIA [Z. obscura] Polenova 1952,0.69 [Leperditellidae 
by Polenova] Devonian, USSR. 
ZONOCYPRIS [Z. madagascarensis, Z. elegans] G. W. Muller, 
1898,p.284 [Cyprididae-Cypridopsinae by Sharpe 
1903,p.990; Cypridae=Cyprinae by G. W. Muller 
1912,p.217] Recent, Madagascar. 
ZONOZOE (Z. drabowiensis, Ze complexa] Barrande 1872,p.55h, 
“Middle Silurian" Bohemia. 
ZYGOBEYRICHIA [Z. apicalis] Ulrich 1916,p.290 [{Beyrichiidae 
by Ulrich; Zygobolbidae-Kloedeninae by Bassler 
and Kellett 193h,peh9kh; Beyrichiidae-Beyrichiinae 
by Henningsmoen 1953,pe238,269] Devonian, Maine. 
195 
