FOSSILS OF THE NORFOLK TILL. 
31 
years have elapsed since the first specimen of Honialonotus del- 
phinocephalus was found in this locality : it was previously not 
known to exist in the Dudley rocks_, although met with at Lud- 
loW;, while so many specimens of it are to be seen^ both in the 
society's museum and in the hands of private collectors as well, 
that it is no longer considered a rare fossil. Many similar in- 
stances might be mentioned, where the discovery of the first 
specimen of a new species has led, by inducing more careful 
research, and by pointing out the most probable line of success, 
to the possession of many others j and therefore the committee 
think they can scarcely overrate the importance of this single 
specimen, as it will probably lead to the knowledge of a new 
class, perhaps, containing in itself alone, many distinct varie- 
ties. 
List of Fossils from the " TilV^ (Blue Clay of Woodward) ^ of 
the environs of Bacton, and the formations to which they originally 
belonged. By Charles Green, Esq, 
Littorina littorea Crag. 
Cardium ] 
Tellina /F'-'^Sments . . . Ditto. 
Gryphsea Lias. 
Pholas crispata Clay. 
Pholadomya Murchisoni . . Inferior oolite. 
Cardium hillanum Green Sand. 
Avicula insequivalvis .... Inferior oolite. 
ovalis Coral rag. 
media London clay. 
Plagiostoma punctatum . . . Lias. 
Terebratula crumena . . . Mountain limestone. 
Ammonites ? . . . . Ditto. 
rotiformis Lias. 
