﻿PLATE IV. 



Fig. i Page 



1. Ctenodus cristatus, Ag. ; bones of cranial roof, two-thirds 



nat. size. — Coal-Measures ; Clanway, North Stafford- 

 shire, t. Dental plate. 0. Median azygous series. 

 I. Inner paired series. II. Second paired series. III. 

 Third paired series. [P. 5031.] 252 



2. Sagenodus incequalis, Owen ; right upper dental plate of 



young, twice nat. size. — Coal-Heasures ; Newsham. 



[P. 3381.] 259 



3. Ditto ; right lower dental plate, twice nat. size. — Coal- 



Measures ; Longton. [P. 3381 a.] 259 



4. Ctenodus murchisoni, Ward; left upper dental plate. — 



Upper Coal-Measures ; Leebotwood. [P. 518.] 255 



5. Uronemus splendens, Traq. ; lower marginal teeth. — 



Middle Carboniferous Limestone ; Borough Lee. 



[P. 5986.] 250 



