226 Teeth of Carchdrias mega I od on in the Red Crag. 



Carchdrias megdlodon Agass. 



the crag; and, from the very slight consolidation of the beds, 

 and the general lithological character of the deposit, the dis- 

 covery of connected skeletons can never be expected. All 

 the information that we can acquire, respecting the verte- 

 brated animals whose remains are there embedded, must be 

 derived from the examination of detached bones and teeth. 

 These latter, belonging to various species of the shark tribe, 

 occur in abundance ; but, with the exception of the genus 

 Carcharias, all the forms may be identified with those in the 

 London clay ; from which deposit it is highly probable that 

 many of them have been removed. The circumstance, how- 

 ever, of specific agreement would not alone lead to the 

 above supposition, since, throughout the whole tertiary series, 

 and even in the more recent secondary rocks, many of the 

 s qualoid fish appear to have closely resembled existing types. 



