92 
ORGANIC REMAINS. 
FOSSILS OF THE RED CHALK. 
Spongia P ramose subcylindrical masses 
Inoceramus Cuvieri, jun. 
T erebratula subglobosa, jun. 
Goodmanham. 
Speeton Cliff. 
Ditto. 
Belemnites Listeri . . 
Serpula 
PI. I. fig. 18. 
fig. 19. 
Speeton, Goodmanham, &c. 
Speeton Cliff 
The fossils of the Yorkshire chalk, enumerated in the preceding 
catalogues, are all which have fallen under my inspection (1829) ; and 
they have been obtained almost exclusively from a particular part of 
the stratum, and indeed chiefly from one very favourable locality. 
Considerable additions to their number may, therefore, be reasonably 
expected, when the lower beds are more accurately examined; but it 
appears to be the truth that the chalk-pits inland are as unproductive 
as a part of the sea-cliffs is rich in organic remains. 
At present the deficiencies in the Yorkshire series, when compared 
with the chalk formation generally, are most observable in the mollus- 
cous and crustaceous tribes of animals, and in the reliquiae of fishes and 
reptiles. With regard to the latter groups, geologists know that these 
fossils are not spread, like shells, over a vast extent of country, but often 
confined to limited localities. The zeal and industry of JMantell have 
discovered them abundantly in Sussex, but few other parts of the chalk 
range in England, or on the continent, can be quoted for comparison. 
The species of fossil shells are not in any district very numerous in the 
chalk, but in Yorkshire some remarkable kinds are yet undiscovered; 
as plagiostoma spinosum, ostrea vesicularis of Lamarck, (gryphaea globosa 
of Sowerby,) terebratula carnea * and t. plicatilis, of France and England, 
and the cirri and trochi of Wiltshire and Sussex. 
* Since discovered at Wharram. 
