176 ORGANIC REMAINS. 



REMAINS OF FISHES. 



Teeth of squali, &c. in Speeton clay, coralline oolite, &fc. 

 Head and scales of unknown fishes, lias. 

 Radius of a balistes ? lias. 



REMAINS OF REPTILES. 



Crocodile, in coralline oolite and lias. 



Ichthyosaurus, in Speeton clay, coralline oolite, and Has. 



Plesiosaurus, in Bath oolite. 



Undescribed genus, in lias. 



FOSSILS OF THE DILUVIUM, 

 IN THE EASTERN PART OF YORKSHIRE. 



THE organic remains found in diluvium must be divided into 

 two groups ; viz. those which, having been at some former period en- 

 closed in solid strata, were transported from their original sites by the 

 violence of the deluge, and those which belonged to animals living 

 immediately before that catastrophe. Of the former kinds, we find on 

 the Yorkshire coast and in the vales of York and Cleveland, a great 

 variety, transported in different distances and in different directions. A 

 considerable number of them are described in Mr. Kendall's " Catalogue 

 of Scarborough Minerals and Fossils." Amongst those derived from 

 the mountain limestone of Yorkshire, we may notice a beautiful retepora 

 and a millepora, both nondescript ; tubipora strues, Linn. ; catenipora 

 catenulata, (chain coral,) a beautiful favosites, and several species of 

 astraea, caryophyllia, and turbinolia, besides spirifera, productas, terebra- 

 tulas, and crino'idal columns. From the coal districts of western York- 

 shire, we have lepidodendra and variolarise. But the most abundant 

 diluvial fossils on the coast, are those derived from the lias cliffs in 

 the north ; for it is hardly too much, to assert that three-fourths of 



