CLADODONTIB^. 
29 
P. 544:5. Impression of portion of dental crown, referred by Agassiz, 
loc. cit., to Carcharopsis prototypus ; Pateley Bridge, York- 
shire. Enniskillen Coll. 
P. 2267. Portion of tooth and impression ; Yorkshire. Egerton Coll. 
P. 4886. Two teeth ; Yoredale Kocks, Wensleydale, Yorkshire. 
Ilorne CoU. 
46822. Broken tooth ; Derbyshire. Gilbertson CoU. 
P. 5446. Tj*pe specimen of Carcharopsis colei, Davis, regarded by 
Traquair as the abraded crown of a similar tooth ; 
Armagh. Enniskillen Coll. 
The following species have also been founded upon detached teeth ; 
but there are no examples in the Collection ; — 
Dicreno'lus youylii : Pristieladodus goxighi, F. McCoy, Brit. Palaeoz. 
Foss. 185.5, p. 643, pi. 3x. fig. 11. — Carboniferous Lime- 
stone ; Kettlewell, near Kendal. 
Dicrenoilus jerofeyewi : Pristidadodus jerofeyewi, H. Eomanowsky, 
Bull. Soc. Imp. Nat. Moscou, voL xxxvii. (1864), pt. iii. 
p. 165, pi. iv. fig. 30. — Carboniferous Limestone ; Govern- 
ment of Toula, Russia. 
Dicrenodus okensis, H. Romanowsky, BuU. Soc. Imp. Nat. Moscou, 
vol. xxvi. no. 1 (1853), p. 407, pi. viu. ; ibid. vol. xxx. 
no. 1 (1857), p. 290. — Carboniferous Limestone; Govern- 
ment of Toula, Russia. 
Dicrenodus vortheni: Carcharopsis wortheni, J. 8. Newberry, Pal. 
Illinois, vol. ii. (1866), p. 69, pi. iv. fig. 14. — Lower Car- 
boniferous ; Huntsville, Alabama. 
Genus HYBOCLADODUS, St. John & Worthen. 
[Pal. Illinois, vol. vi. 1875, p. 284.] 
Teeth scarcely distinguishable from those of Pristidadodus, but 
destitute of crenulations upon the edge of the crown. No lateral 
cones. 
Hybodadodus eompressus, St. John & Worthen, tom. cit. p. 287, 
pL V. fig. 8.—Eelodus eompressus, Newberry & Worthen, 
Pal. Illinois, vol. ii. 1866, p. 78, pi. v. fig. 1.— Upper 
Burlington Limestone ; Iowa. 
Hybodadodus intermedius, St. John & Worthen, tom. cit. p. 287, 
pi. V. fig. 11. — Keokuk Limestone; Iowa, Illinois. 
Hybodadodus nitidus, St. John & Worthen, tom. cit. p. 288, pi. v. 
fig. 7. — Chester Limestone ; Illinois. 
