EXTINCT ANIMALS 



have myself had the pleasure of unearthing. 

 The strange thing is that it is and remains 

 unique. 



Fig. 189 is a photograph of the upper and 



Fig. 188. — Photograph (of the natural size) of a specimen 

 showing parts of the upper and lower head-shields of 

 Pteraspis crouchii, with ten rows of lozenge-shaped scales 

 attached. This is the only specimen showing the scales 

 of Pteraspis, and was obtained by the author at Cradley, 

 near West Malvern, Herefordshire, in 1864, and subse- 

 quently presented by him to the British Museum. 



under side of a model of the Drepanaspis, a'^ 

 most strange fossil fish of the same early age, 

 allied to Pteraspis. It is prepared from the 



260 



