﻿8 
  4 
  

  

  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  Table 
  VII. 
  — 
  Fauna 
  of 
  the 
  Dogger, 
  Millepore-bed, 
  and 
  Grey 
  

   Limestone 
  and 
  Cornbrash 
  of 
  Yorkshire. 
  

  

  o 
  

  

  & 
  -a 
  

   3 
  

  

  13 
  

  

  

  a 
  « 
  

  

  fBelemnites 
  ... 
  

   •{ 
  Ammonites 
  .. 
  

  

  ^ 
  Nautilus 
  

  

  Gasteropoda 
  

   Monomyaria 
  

  

  Dimyana 
  

  

  Brackiopoda 
  

  

  Annelida 
  

  

  Bryozoa 
  

  

  Echinoidea 
  . 
  . 
  

   Asteroidea 
  .. 
  

   Coelenterata 
  

   Protozoa 
  

  

  Total 
  

  

  The 
  above 
  Table 
  (VII.) 
  shows 
  that 
  in 
  the 
  Cornbrash 
  of 
  York- 
  

   shire, 
  as 
  in 
  the 
  Lincolnshire 
  Oolites 
  and 
  beds 
  below, 
  the 
  Cephalopoda 
  

   are 
  scarcely 
  represented 
  ; 
  also 
  that 
  only 
  two 
  Actinozoa 
  are 
  known 
  ; 
  

   and 
  that, 
  nnlike 
  the 
  southern 
  Cornbrash, 
  only 
  five 
  species 
  of 
  Brachi- 
  

   opoda 
  occur 
  in 
  this 
  northern 
  extension. 
  

  

  The 
  Upper 
  Shales 
  and 
  Sandstones, 
  about 
  140 
  feet 
  thick, 
  with 
  only 
  

   one 
  or 
  two 
  fossil 
  shells, 
  rest 
  upon 
  the 
  Grey 
  Limestone 
  : 
  and 
  south 
  

   of 
  the 
  Spa 
  their 
  remarkable 
  bedding, 
  enormous 
  " 
  dogger" 
  and 
  siliceous 
  

   rocks, 
  are 
  the 
  marked 
  features. 
  At 
  Gristhorpe 
  Bay 
  they 
  are 
  also 
  

   conspicuous 
  ; 
  they 
  may 
  be, 
  and 
  probably 
  are, 
  " 
  the 
  moor 
  stones, 
  

   whose 
  weird 
  and 
  grey 
  masses 
  on 
  the 
  Yorkshire 
  moors 
  seem 
  to 
  live 
  

   on 
  unchanged 
  and 
  unaltered 
  under 
  the 
  test 
  of 
  meteoric 
  vicissitudes 
  

   scarcely 
  known 
  in 
  any 
  other 
  region." 
  

  

  The 
  Cornbrash. 
  — 
  This 
  capping 
  to 
  the 
  Lower 
  Oolites, 
  although 
  

   only 
  a 
  few 
  (3 
  or 
  4) 
  feet 
  thick, 
  is 
  the 
  most 
  fossiliferous 
  zone 
  of 
  the 
  

   entire 
  series; 
  it 
  is 
  the 
  most 
  persistent 
  band 
  or 
  horizon 
  of 
  the 
  

   Jurassic 
  subdivisions 
  in 
  Yorkshire; 
  and 
  it 
  suddenly 
  exhibits 
  an 
  

  

  