160 roSSIL FAUNA. 



PLATE IjXX.— continued. 



Fig. 11. A very large tooth of a Shark, {Carcharias mepalodon,) from the tertiary deposits of 

 Malta. 



Fig. 12. Fragment of a bone, with two teeth, probably of a species of Pycnodus. 



Fig. 13. " The mandible and tooth of a recent fish (Diodon), to compare with the fossils figs. 16, 

 and 17." — Mr. Parkinson. 



Fig. 14. " Fossil palate of a fish, from Sheppey." — Mr. Parkinson. This evidently belonged to a 

 species of B,ay ; possibly to the Eagle rays {Miliobutis). 



Fig. 15. Tooth of a fish allied to the Cestraoionts, or Port Jackson Shark, (probably of the genus 

 Acrodus,^ ) from Bath; commonly called " Leech palates" by the quarrymen. 



Figs. 16, & 17. "Fossil palates of fishes of the Eay kind, from Sheppey." — Mr. Parkinson. 

 These appear to belong to the Miliobates {M. micropleuris, nf Agassiz). Beautiful 

 examples of these fossils have been obtained from the Bracklesham clay, on the coast 

 of the West of Sussex. The late Frederic Dixon, Esq. of Worthing, whose 

 untimely death is so much to be deplored, had a matchless suite of specimens from 

 that locality. 



Fig. 18. A fine specimen of a fossil tooth of a fish of an extinct genus, of which many species 

 occur in the chalk {Ptychodus polygurm, of Agassiz). The teeth of various species 

 of this genus of Sharks abound in the chalk of almost every part of England.^ 



' Medals of Creation, p. 614. 2 Ibid. p. 630. ' Ibid. p. 616 ; and plate vi. fig. 2. 



