34 



THE 'DERIVED' FOSSILS. 



The subjoined table gives a list of all the fossils known from 

 the Neocomian Black Grit rock, with some notes on their distribu- 

 tion elsewhere. 



Fossils from the Dark Grit Blocks. 

 Ammonites sp. (collection J. F. Walker) 

 Hamites, or Ancyloceras, small species with double row of 



dorsal spines 

 Emarginula Neocomiensis, d'Orb., of the Shanklin and Ather- 

 field beds ... 

 *Trochus, small ornamented species 

 Trochus, also at Shanklin, Meyer 

 Scalaria 

 Tornatella 



Cerithium, muricated species 

 Pecten orbicularis, Sby., Hilgay (Teall) 

 ,, striato-punctatus, Roemer (Wiltshire) 

 *Pema Mulletti, Desh. ... 



* „ Ricordeana, d'Orb. 

 Nucvla 

 Leda 



*Cardium subhillanum, large form 



Also occurs in the Donnington sands (Tealby), Shanklin, 

 and Punfield (Meyer). 

 Small triangular bivalve 



* Thetis minor, Sby., of Shanklin 

 *Cytheraia Orbigniana, Forbes, of Shanklin ; and the Crackers, 



Isle of Wight 



Lucina 

 *Goniomya (?) 

 Pholadomya Raidimana, d'Orb. of the Albien, Ardennes; also 



at Nutfield (Meyer) and Tealby 



? Scrobicularia jihaseolina, Phill. 

 Pholadomya 



Panopcea Neocomiensis, Leym. 

 Corbula 

 *Cuculla;a errans, Kpng., also at Herrimere, and (?) in the 

 Tealby series at Claxby 



* „ Donningtonensis, Kpng., also in Lower Neocomian, 

 Tealby district 



*Mytilus lanceolatus, Sby. 

 Trigonia spinosa, Park. 



* ,, Vectiana, Lycett, of Shanklin and Atherfield 

 *[Terebratida ovoides, Sby. var. occurs in the Herrimere rock, 



and is found phosphatised at Upware, Brickhill and 

 Potton] 



U indicates the dark grit blocks at Upware. 



P „ „ Potton. 



H ,, ,, Hunstanton. 



u. 



H. 



P. 

 P.H. 



U. 



H. 



H. 



U. 



H. 

 P.H. 

 U.H. 



U. 



H. 



P. 

 U.H. P. 



U.H. P. 

 UP. 



H.S. 

 U.P.H. 



H. 

 H. 

 H. 



H. 



U. 



u 

 u. 

 u. 

 u. 



UP. 



