THE PALEONTOLOGY OF MINNESOTA. 



[Climacograptus. 



Formation and locality. Very common in the lower portion of the Hudson Biver group, in a small 

 quarry two miles west of Granger, Minnesota. It also occurs in the Utica slate and Hudson Elver group 

 at Baker's Falls, Utica, Trenton, Loraine, Turin, and elsewhere in New York ; Whitby and Collingwood, 

 Ontario; ?Cincinnati, Ohio, and Graf, Iowa. 



Collectors. V? . II. Scofleld and the writers. 

 Mus. Keg. Nos. 7755, 7756, 7758. 



DJPLOGRAPTUS PUTILLUS Hall. 



FIG. 3. 



1865. Graptolithus (Diplograptus) putillus HALL. Canadian Organic Remains, dec. ii, p. 44, pi. A, 



flgs. 10-12, 

 1867. Graptolithus (Diplograptus) putillus HALL. Twentieth Rep. N. Y. State Cab. Nat. Hist., pi. 2, 



flgs. 10-12. 



Formation and locality. Hudson River group, near Granger and near Spring Valley, Minnesota; Graf. Iowa. 

 Collectors. W. H. Scofield and the writers. 

 Mus. Reg. Nos. 302, 4097. 7758, 7760. 



CLIMACOGBAPTITS TYPICALIS Hall. 



FIG. 4. 



1865. Climacograptus typicalis HALL. Canadian Organic Remains, dec. ii, pi. A, flgs. 1-9. 



1867. Climacograptus typiealis HALL. Twentieth Rep. N. Y. State Cab. Nat. Hist., pi. 2, flgs. 1-9. 



Formation and locality. In the Galena limestone at Mantorville, and Weisbaeh's dam near Spring Valley, Minnesota; 

 "i Wisconsin. Cincinnati group at Cincinnati. Ohio; Hudson River group, New York. 

 Collectors. W. H. Scofleld and the writers. 

 Mia. Reg. Nos. 294. 295, 390. 7759. 



