745 



Pris. 



Pristicladodus armatus (a variety of springeri), St. 



K) 



IIChi 



John & Worthen, Geol. 111. Vol. 6, 1875, page 256, plate 1, figs. 

 8a, enlarged S times^ large tooth, outer face ; 5, lower basal sur- 

 face with worn protuberances in front, and middle foramen in 

 back margin ; 9 a^ enlarged 2, similar tooth, front ; 5, bp.ck ; c, 

 base; 6^, profile; 10 a, small tooth, outline; h^ enlarged^ front] 

 11«, enlarged^ minute tooth, front view ; J back face ; ^, base. 

 All from Subcarioniferous KinderhooU upper and lower iisli 

 heds. XL 



Pristicladodus springer!, St. John & Worthen, Geol. 111. 



7 a. 



Geo/, f//. V/\j)L I 



VI, p. 255, pi. 1, figs. 7a, outline J, enlarged outer face ; <?, lower 

 basal surface ; profile and section of cone. Lower Hslibed at 

 Kinderhook, Subcarloniferous limestone. XL 



Pristodus ? acuminatus, St. John & Worthen, Geo. Sur. 



XI. \<\ncLtrhooK\ '6c 

 GeoiJllinois] VL. "^f^ 



pcigp liQXfpL 'X A. 



'"^' 



6 c 



6d. 



111., Vol. 6, 1875, page 402, plate 10a, figs. 6a, 5, c. d, views of 

 a unique specimen of a delicate little fish tooth with features 

 indicating a closer relationship to Agassiz' genus .Pristodus 

 than any other American carboniferous specimens do, (Comp. 

 P, falcatus^ Ag.) Lower fish bed, Kinderhook. XL. 



