PAKT II. 

 SPECIAL PALAEONTOLOGY. 



I. VEBTEBRATA. 



KEPTILIA. 



THE Reptilian remains from Upware and Brickhill, although 

 few in number, include representatives of most of the types which 

 are so abundant and well known from the Potton area in Bed- 

 fordshire 1 . Remains of Deinosaurians, including Iguanodon; of 

 Crocodilians, including Goniopholis and Teleosaurus; and of Saurians 

 proper (Plesiosaurus, Pliosaurus and Ichthyosaurus) all occur, and 

 the bones are usually in a good state of preservation, being much 

 less wave-worn than the Potton specimens. 



It is unnecessary here to describe in detail all these remains, 

 for many of them are not true cretaceous species at all, being only 

 the wave-spoils from the old sea cliffs of Jurassic rocks. Examples 

 of these latter are seen in the teeth of Pliosaurus brachydeirus, 

 and Dakosaurus, not uncommon fossils, which are identical with 

 those found in the Kimmeridge clay of the immediate neighbour- 

 hood ; also they are types which are not known to have lived on 

 into the cretaceous epoch. These are therefore, with others, ' de- 

 rived ' fossils belonging properly to earlier geological periods. 



But others of the Reptilian remains, such as the Deinosaurs, 

 and the crocodilian teeth, are cretaceous in type and are just such 



1 See Seeley, Index to Reptilia, etc., in the Woodwardian Museum, Cambridge, 



