Ifl2 



I'lAii; V. 



PaRp 



I'ntosloniil juos.si I I \-nv 1;j1 



1. Tiin^i'iiti:il sccliiiii. sliuwiiiiT (•niiiiiiiinic;it idii pdrcs, x is. 



I.owei" LilK'ily. 

 la. Tangential section, slidwin.i,' iniusnally lar;ie acantlinpurcs, 



X IS. Lower I.ilierty. 

 11). Typical tangential section, x IS. ITpj)er Waynesviile. 

 le. Surlace, showing nnnierons nn'sopores and acantimpores, x 9. 



Lower Lil>erty. All sjieciniens from Weisburg. 



