RELATIONS TO OTHER BRITISH DEPOSITS. 61 



A layer of Phosphatic nodules occurs about 50 feet from the 

 top of this series (Meyer). 



(3) The upper series is considered under three divisions, (a) the 

 Pebble bed, (6) the Bargate stone, and (c) the Upper sands and Car- 

 stone. The Pebble beds are stated to rest unconformably upon the 

 sands beneath, and this fact, together with the nature of the de- 

 posit, a coarse sand with angular pebbles seeins to indicate that 

 this bed denotes a period of earth-movements and marine disturb- 

 ances; a point which has been insisted upon by Mr Meyer as of 

 great importance. The upper limit of the bed is ill-defined, pass- 

 ing on in gradual transition to the Bargate stone above. Now 

 here again, just as with the Hythe and Sandgate series, every one 

 of the pebble-bed fossil species that has been named and identified 

 occurs also in the Cambridgeshire deposit. These are 15 in 

 number : 



Pecten Eaulinianus, d'Orb. Wcddheimia Juddii, Walker. 



,, orbicularis, Sow. psvudojurensis, Leym. 



Exogyra Tombeckiana, d'Orb. Wanklyni, Walker? 



Terebratulina striata, Wahl. Terebratula depressa, Lam. 



Terebratella oblonga, Sow. extensa, Meyer. 



,, Fittoni, Meyer. microtrema, Walker. 



,, Menardi, Lam. Tornasensis, d'Arch. ? 

 Waldheimia tamar Indus, Sow. 



But the resemblances between this deposit and our 'coprolite 

 beds' do not end here, for their lithological similitude is also most 

 close; we have the same Lydian stones, jasper, irony grit, and 

 quartzite, and the same phosphatic nodules; and again, just as at 

 Upware, the bed becomes in places hardened into a conglomerate, 

 so as to be almost identical with the lower conglomeratic coprolite 

 bed of the Upware section. Again, we have the same fragments 

 of fishes and derived fossils as at Upware including the following 

 species identified from the collection of Mr Meyer, F.G.S., and Mr 

 J. F. Walker, M.A., &c. : 



Lepidotus, scales and teeth. Gyrodus. 



Otodus. Acrodus. 



Pycnodus. Plesiosaurus. 



Hybodus, Rostellaria. 



Ammonites Lamberti, Sby. Ludna. 



cordatux, Sby. Myacites. 



biplex, Sby. Pentacrinus, dec. 



