PLATE II. 



PAGE. 



Fig. 1-13. Cladodus Springe ri, St. J. and W 259 



1 a. Outline of small tooth, nat. size; 1 6, outer face, enlarged two diameters; 1 c, base 



from below j 1 d, profile section. Lower fish-bed, Kinderhook. 



2 a. Outline of little larger tooth ; 2 b, c, d, view of outer face, inferior basal surface, and 



profile section, enlarged two diameters. Same horizon. 



3 a. Outliue of still larger specimen ; 3 6, c, views of outer face and infeiior basal surface, 



enlarged two diameters. Same horizon. 



4 a. View of outer face of large tooth ; 4 b, posterior face enlarged ; 4 c, profile view, 



enlarged; 4 rf, iuferior basal surface. Same horizon. 



5 «. View of outer face of medium sized tooth, enlarged ; 5 b, c, inferior basal surface and 



profile section, nat. size. Same horizon. 

 G «. Anterior face of medium-sized, worn tooth, the two large lateral denticles alone 

 remain; 6 6, posterior face; G c, showing the worn inferior basal surface; 6 d } 

 profile section. Same horizon. 



7 a. View of outer face of slightly smaller tooth, exhibiting other features due to abra- 



sion; 7 b, base from below. Same horizon. 



8 a. Outer face of minute tooth, much worn, enlarged four diameters ; 8 b, c, inferior basal 



surface, profile section and transverse section of median cone. Same horizon. 



9 a. Outer fa°e of very small, worn tooth, enlarged four diameters; 9 />, base from 



below. Same horizon. 



10 a. Outer face of minute tooth., in which, only one lateral denticle remains on one 



extremity and two on the opposite, enlarged four diameters; 10 6, base from 

 below. Same horizon. 



11 a. Outer face of an abnormally developed tooth, enlarged one-half; 11 b, posterior 



face, showing the contracted prominence of upper basal surface; 11 c, view of 

 base from below. Same horizon. 



12 a. Outer face of minute, perfect tooth, enlarged four diameters ,- 12 6, c, d, posterior face, 



inferior basal surface, and profile section. Same horizon. 



13 a. View of outer face of small perfect tooth, showing excessive development of acces- 



sory denticles at base of crown, enlarged three diameters; 13 &, c, base from 

 below, and profl'e section. Same horizon. 

 Fig. 14-1S. Cladodus altehxatus, St. -J. and W 265 



14 a-. Outline, nat. size; 14 b, outer surface, enlarged three diameters; 14 c, d, inferior basal 



surface, and profile section, nat. size. Lower fish-bed, Kinderhook. 



15 a. Outline of little more robust tooth ; 15 b, c, d, e, views of outer, posterior, and inferior 



basal aspects, and profile section, enlarged three diameters. Same horizon. 



1C a. Outline of smaller tooth ; 16 b, outer face, enlarged three diameters; 16 e, base from 

 below; IU d, profile section. Upper fish-bed, Kinderhook. 



17 a. Outline of very small tooth ; 17 b, c, d, views of outer face inferior basal surface, and 

 profile section, enlarged three diameters. Lower fish-bed. Kinderhook. 



IS <(. View of outer face of medium-sized tooth, enlarged four diameters ; partial restora- 

 tion, outline from tooth from upper fish bed, coronal ornamentation from speci-. 

 men from lower fish-bed of the Kinderhook. 



