274 The American Geologist. May, isos 
number whose horizons are so uncertain or so poorly defined 
that any attempt to Hmit them to a definite formation is 
largely a matter of conjecture. They are therefore grouped 
in a list by themselves with this explanation, that they prob- 
ably represent a vertical range from the Jordan sandstone of 
the Magnesian series down to the lowest beds of the Basal 
Sandstone series. 
Palceophycus plu///osuni Whitfield. 
Aglaspis etoni Whitfield. 
Agraulus ivoosteri Whitfield. 
A. {Arionellus) coitvexus Whitfield. 
Crepicephalus gihbsi Whitfield. 
C. onustus W^hitfield. 
Ellipsocephalus curtus Whitfield. 
Dicellocephalus lodotsis Whitfield? 
D. laiifrons Shumard. 
Ptychaspis barabuetisis Winchell. 
■ P. [Conoccphalitcs) qitadrata Whitfield. 
P. mimita Whitfield. 
P. striata Whitfield. » 
Areiiicolites woodi Whitfield. 
Leptcena barabuensis Whitfield. 
Triplesia primordia/is Whitfield. 
Ophileta [Straparollus] priuiordialis Winchell. 
Pleurotoinaria ad7'eiia Winchell. 
Scot i thus linearis Hall. 
The remarkable group of fossils from Eikie's quarry, near 
Baraboo, Wisconsin, bears such a striking resemblance to the 
new forms from the Dresbach at Taylor's Falls that it seems 
most proper to enumerate them here. Notwithstanding the 
difficulties of stratigraphy at Baraboo and the inclination of 
the Wisconsin geologists to place them nuich higher in the 
series of formations, it is at least clear that the two faunas are 
in all essential respects similar. The Baraboo fossils are: 
Leptcviia (Orthis) barabuensis Winchell. 
Euoiiiphalus strongi Whitfield. 
Tryblidiuin {Metoptoina) barabuensis (Whitfield). 
T. (Metoptonia) si/nilis Whitfield. 
T. {Metoptoma) retrorsa Whitfield. 
Hypseloconus {Metoptoma) recurinis (Whitfield). 
Sccevogyra elevata Whitfield. 
S. obliqua Whitfield. 
6". sivezeyi Whitfield. 
