PLATE I. 



Fig. 



1. Dermal spine of a Deinosaur, Upware (Coll. Mr J. F. Walker, 



M.A.). 



2. Dorsal vertebra of Plesiosaurus (P. Xeocomiensis, Camp. ?) Upware, 



a, basal view ; b, anterior face. 



3. Plesiosaurus, sp. nov. from Brickhill. a, basal view ; b, articular 



surface f. York Museum. 



4. Sphaerodus Xeocomiensis, Ag. , Upware. «, base ; b, surface ; c, 



side view. 



5. Pycnodus Couloni, Ag., Upware. a, upper surface ; b, side view 



(Coll. J. F. Walker, M.A.). 



6. Belemnites pistilliformis, var. subfusiformis, d'Orbigny, Upware. 



a, front view ; b, back view ; c, side view. 



7. Belemnites (?) Upwarensis, Kpng., Upware. a, natural size; b, 



the same enlarged -| ; c, proximal surface y ; d, the same 

 further enlarged. 



8. Belemnites subquadratus, Romer, Brickhill. 



9. Ammonites Comuelianus, d'Orb. Upware. 

 10. Ammonites, sp. Upware. 



