775 



Prota. 



Protaster granuliferus, Meek, Amer. Jour. S. & A. [3], 



Vol. 3, 1872. Pal. Ohio, Vol. 1, 1873, page 

 68, plate 2 his^ fig. 8 a, magnified^ about 

 twice (a unique and imperfect specimen, 

 not conformable in all respects to Forbes' 

 genus), ventral view of part of disc, and 

 ^^-^oKlpII. inner ends of rays; 8 5, magniHed small 



portion of minutely granulated skin of dorsal side of disc. 



Middle of Cincinnati {Hudson river) formation at Moore's 



Hill, Ind. nil. 



Protaxites logani, Dawson. Geology of Canada, 1863, 



V|||+« 



vGeoL. 



CanacUt . <-- 429 



m 



page 401, fig. 

 429 «, magnified 

 (X40)cros8-8ec- 

 tion showing the 

 line of growth 

 and medulary 

 ray; J, c^ mag- 

 nified (x' 300) 

 long and cross- 

 sections of the 

 wood. Devon- 

 ian Oaspe sand- 

 stone. VIII ^ 



a IX. 



Prothyris meeki, Winchell, MS., 1872. Pal. Ohio, Vol. 2, 



1875, page 305, plate 15, fig. 2, natural 

 size^ right side of cast; easily distin- 

 guished from P. elegans (type of the 

 ,. -_ genus) by much greater con vexitv, etc., 



falMir.JT.n.zrs. ^tc. Rushville, O. Waverly {Lower 

 Carloniferous^ or Pocono) formation. X. 

 Protichnites alternans, D. D. Owen. Geol. Canada, 1863, 



^mMm/MMM\^^T> alternans jOwan) J page 104, fig. 



13. Potsdam, 

 sandstone. I 



22 



