101 



CHIUOEROIDEL 



Genus EDAPHODON, Buckland. 



Dentary plates of Chimaeroid fishes are not uncommon in the 

 Red Crag Nodule-bed of Suffolk, and although most of them are 

 too fragmentary for definite determination there is no doubt as to 

 many of them belonging to the genus Edaphodon. Numerous 

 examples are to be seen in the Museum of Practical Geology and 

 in the Ipswich Museum, all the specimens being much rolled arid 

 probably derived from earlier Tertiary beds ; the latter fact no 

 doubt accounts for the absence of this genus from previous lists of 

 Crag fossils. 



Genus ELASMODUS, Egerton. 

 ELASMODUS HUNTERI, EGEHTON. 



This genus and species was established by Sir Philip Grey 

 Egerton (Proc. Geol. Soc., Vol. IV., p. 156, 1843, and Mem. GeoJ. 

 Surv., Decade VI., Plate i., 1852) for some Chimaeroid jaws from 

 the London Clay, in which the dental plates are laminated and 

 scroll-like. One cf the lower dentary plates of this species has 

 been met with in the Red Crag Nodule-bed, near Woodbridge, and 

 is preserved in the Museum of Practical Geology ; it is probable, 

 however, that this specimen has been derived from Eocene beds. 

 Dr. Fritz Noetling (Fauna Samland. Tert, Abhandl. geol. Special- 

 karte Preus., Vol. VI., 1885) has met with this species in the 

 Miocene (Bernstein formation) of Samland, East Prussia. 



Genus CCELORHYNCHUS, Agassiz. 



A fragment of a spine from the Eed Crag Nodule-bed of 

 Woodbridge, in the British Museum (No. 43,312), agrees with 

 those from the Eocene to which the name of Codorhynchus 

 rectus has been applied, and probably the specimen has been 

 derived from beds of that age. 



In accordance with the suggestion of Mr. Smith Woodward 

 (Ann. Mag. Nat. Hist. Ser. 6, Vol. II, p. 223, 1888) Codorhynchus 

 is here provisionally placed with the Chima^roids. 



