CLiDODONTIDai. 
21 
Cladodus grandis, Newberry & Worthen. 
1866. Cladodu$ grandis, Newberry & Worthen, Pal. Illinois, vol. ii. 
p. 29, pi. i. tig. 15. 
Type. Detached tooth. 
Teeth very large and robust. Principal cone broad, moderately 
compressed, with sharp lateral edges ; outermost lateral cones large, 
slender, diverging, others relatively small, 4-7 in number on each 
side. Coronal surface marked by numerous delicate vertical striae. 
Form. ^ Loc. Lower Carboniferous (Chester Limestone) : Illinois, 
U.S.A. 
P. 2948. Two broken principal dental cones ; Pope Co., Illinois. 
Enniskillen Coll. 
Cladodus robustus, Newberry & Worthen. 
1866. Cladodus robustus, Newberry & Worthen, Pal. Illinois, vol. ii. 
p. 20, pi. i. fig. 1. 
1866. Cladodtis rrdcropus, Newberry & Worthen, tom. cit. p. 21, pi. i. 
tig. 2. 
1866. Cladodus angulatus, Newberry & Worthen, tom. cit. p. 24, pi. i, 
figs. 7, 8. 
1866. Cladodus turritus, Newberry & Worthen, tom cit. p. 28, pi. i. 
fig. 14. 
Type. Detached tooth. 
Crown of tooth relatively high, base small. Principal cone elon- 
gate, sigmoidal, compressed, with sharp lateral edges, and delicately 
striated ; lateral cones very small, not more than two on either side. 
Messrs. Newberry and Worthen have already suggested the possi- 
bility of the four forms of teeth, here assigned to C. robustus, per- 
taining to different parts of the mouth of one individual. It is 
inconvenient to separate them specifically by characters so slight as 
those referred to in the several diagnoses. 
Form. ^ Loc. Lower Carboniferous (Keokuk Limestone) : Illinois, 
U.S.A. 
P. 2950. Broken fragment of principal cone ; Warsaw, Illinois. 
Enniskillen Coll. 
P. 2946. Tooth of the form of “ C. micropus”; Warsaw, Dlinois. 
Enniskillen Coll. 
P. 2947. Similar, more perfect tooth ; Warsaw, Illinois. 
Enniskillen Coll. 
P. 2941. Fifteen fragmentary teeth, probably of this species ; 
Warsaw, Illinois. Enniskillm CoU. 
