FAUNA OF TIIF JORDAN SANDSTONE. 177 



almost every localit3\ They are partieularly al)iiiulaiit in tlie layers 

 well toward tlie top of the formation. 



Tlie following forms will serve to illustrate the Jordan fauna: 



Bellei'ophon nntiquatus^ Whitfield. 



Plcurotomaria (Holopca) swccti, Whitlield. 



Ophilda, sp. ? 



Murchisoniaj sp. ? 



Lingula stoncana, Whitfield. 



Orthis pcpina, Hall. 



Rdphlstoma minnesotensis^ Owen, 

 witii a number of undetermined trilobites. 



The Oneota Dolomite. 

 localities. 



In Minnesota : Mankato, Kasota, Saint Peter, Ottawa, Stillwater, Point 

 Douglas, Hastings, Red Wing, Rollingstone, Bear creek, above Stockton ; 

 Winona, Dresl)ach and Lanesboro. 



In Iowa : Lansing and McGregor. 



In Wisconsin : Osceola, Hudson, Burkharts Mills, Prescott, Maiden 

 Rock, Prairie du C'hien, Woodman, Middleton station, Madison, Lodi, 

 Blanchardville, and many other places. 



THE XAME "ONEOTA LIMESTONE." 



The name ''Oneota limestone" is given by W J McGee'^ to include 

 practically the lower Magnesian limestone of D. D. Owen.t It is not 

 clear that Owen was aware of the existence of the upper division 

 (Shakopee), wdiich McGee refers J to the Saint Peter sandstone, since the 

 lower division is the consi)icuous one and the upper very obscure in all 

 natural exposures. 



Professor Irving's ''main ])ody of the limestone" applies only to the 

 more prominent formation ; also Winchell's name " Sliakoi)ee limestone," 

 it would seem, was intended to cover what had been included in Owen's 

 lower Magnesian limestone, but as a matter of fact was applied not only 

 to the Shakoi)oe, which alone is seen at Sliakoi)ee, Minnesota, a forma- 

 tion which Owen probably never saw, but also to the lower greater forma- 

 tion exposed at Merriam Junction, Ottawa, Mankato, and otlier places 

 in the Minnesota river valley. 



• W J MffJee : Pleintocpno HiHt«)ry of Northfasl.rn Iow:i, Eloventli Ann. K<'P-. U- •'*• Geol. Survey, 

 WiiHhinjjton, 1891, p. .tJl. 

 t Rt'pjtrt of a Geol. Survey of Wisconsin, lowii, un-l MinnoHotii, IMiilii<lul|»liiii, 185-', p. 58. 

 I IMtiistocene HiHtory of Northoostera Iowa, tublo on pugc 332. 



