KELLOWAYS ROCK. 



139 



siderable number of fossils remain, which have not yet been discovered 

 in any other stratum : but as these have, for the most part, been found in 

 only one locality at the bottom of the stratum, we must wait, I think, 

 for further discoveries, before pronouncing how far they are to be con- 

 sidered characteristic. Judging from very limited experience, I am dis- 

 posed to think ammonites Vernoni, belemnites gracilis, and patella latis- 

 sima, most likely to be useful in this respect. This clay is so intimately 

 connected with the subjacent Kelloways rock in Yorkshire, as well as 

 in the south of England, that we might almost adopt the language of 

 Mr. Smith, who says, (Strata identified, page 22,) " In several instances 

 where the bottom of the clay contains the same fossils as the rock which 

 it covers, it is difficult to say to which stratum they belong." At Dun- 

 robin in Sutherland, Mr. Murchison collected fossils which, from their 

 agreement with those contained in the above catalogue, seem fully to 

 justify his opinion that the stratum there occurring, (see Geol. Trans. 

 Vol. II. pages 302, 319, 361, &c.) is a detached part of the Oxford clay 

 and Kelloways rock. Amongst them, his descriptions lead me to recog- 

 nise ammonites Vernoni, modiola pulchra, (PI. V. fig. 26,) belemnites 

 gracilis, belemnites sulcatus, astarte lurida, &c. &c. 



FOSSILS OF THE KELLOWAYS ROCK. 



Wood of a dicotyledonous plant 

 Spatangus ovalis 



Mya. 1. a cast of the inside 

 2. literata (Min. Conch.) 



... ... Scarborough^ 



>.. PL IV. fig. 23. Hackness, (in Mr. C. Pres- 

 ton's collection,) also in 

 calcareous grit. 

 PL V. fig. 23. Scarborough. 

 PL VII. fig. 5. Scarborough, and in other 



strata. 



3. cakeiformis (a large transverse shell) >i. Ditto, Scalby, and South 



Cave, and in other strata. 

 Pholadomya obsoleta ... .. PL V. fig. 24. South Cave, Hackness, also 



in the Oxford clay. 



Corbis ?. 1. ovalis ... ,. k PL V. fig. 29. South Cave, Scarborough. 



2. laevis? (Min. Conch.) ., fig. 32. South Cave, and b coral- 



line oolite. 

 T 2 



