427 



MURC. 



Murchisonia hdiicincta traversed lenghthwise with 



zigzag scratches, angulated 

 at the the band. — lie, usually 

 in casts, and common in 

 the Trenton limestone in Jeff. 

 Co., N. J. Emmons. — HIS. 

 Hud. Riv. also. Hall. — A fig- 

 /^^J ure is added, to show the 

 size, from Owen's Geology of Wis. Iowa and Min. 1852, pi. 2, 



Ow. M. b. 



II,c 



fig 8, a cast from Turkey river. Iowa. 



Murchisonia lidnGta, See Murchisonia milleri. 

 and III,b. 



Murchisonia bivittata, Hall. Pal. N. Y., Vol. 2, 1852 

 i/b o^o Tijr i- • /.• w, * ,TT TIN Geol. Canada 



f ^ 343. — Murchisonia bivittata ^Haln. 



1863, page 339, 



. — ,. fig. 343. Guelph^ 



iJ->'' or Gait forma- 



i{^6>^,immediately 



Geo/.cm':^,...^'*''* ^BS3 overlying the 



Niagara limestone, Vh', 

 Murchisonia boydii, {Loxonema loydii.) Hall's Geol. 4th. 



^^ ^' C .-^^^^^^ District, N. Y. 



Murchisonia Boy dii, ^" /^^^^^^^^^^ji^^^ 1843 "DafiCe 137 



^i..j4,3 formation 



Guelph formation) Vg. A cast of the 

 shell, with a little of the shell itself 



.1/6 



Geol Cdn. 



1865 



