[ ] 



Anomt^. Thefe are a Kind of foflil Shell, 

 very frequently found in that State, but 

 Icldom recent, and fcarcely ever perfedl. 

 They refemble a Cockle, but are beaked. 



Oftracitesy petriiied Oyfters of different 

 Kinds. 



Pe^tinites. Under this Title are va- 

 rious fofill Scollop Shells. 



Ammonita^ Snake-flones, frequently 

 found in England and elfewhere, in the 

 peiriued State j but the recent is not yet 

 known ; fome fuppofe it to be tlie 'Nm- 

 tihus. 



Nautiliti^ Petrifaftlons refemblihg the 

 Nautilus. There is one very curious 

 Specimen in this Colledion. Thefe Kind 

 of Petrifadions are frequently found in 

 the Mines in DerhyPdre. 



Belmnitcs^ commonly called Thunder- 

 bolts in the Parts of England where they 

 are found. 



Echinites^ Sea Hedgehogs, or Sea Eggs, 

 the Cavities of which are entirely filled 

 with Stone, 



Echinorum 



