﻿n8 
  

  

  PROCEEDINGS 
  OP 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  and 
  ranging 
  into 
  one 
  or 
  other 
  of 
  the 
  Corallian 
  divisions 
  ; 
  but 
  only 
  6 
  

   species 
  pass 
  to 
  the 
  Kimmeridgian 
  stage 
  above 
  ; 
  the 
  fauna 
  therefore 
  

   of 
  the 
  true 
  Corallian 
  Rocks 
  of 
  Yorkshire 
  numbers 
  243 
  species. 
  

  

  The 
  grouping 
  falls 
  under 
  eighteen 
  classes, 
  in 
  which 
  occur 
  the 
  288 
  

   species 
  (omitting 
  the 
  Plantae, 
  285). 
  

  

  The 
  following 
  Table 
  (XV.) 
  is 
  the 
  numerical 
  result 
  of 
  Mr. 
  Hudleston's 
  

   researches 
  upon 
  the 
  Lower 
  Calcareous 
  grit, 
  Coralline 
  Oolite, 
  Coral 
  

   Eag, 
  and 
  Supracoralline 
  beds 
  : 
  — 
  

  

  Table 
  XV. 
  — 
  Showing 
  the 
  Fossils 
  (numerically 
  expressed) 
  of 
  the 
  Lower 
  

   Calcareous 
  Grit, 
  the 
  Coralline 
  Oolite, 
  Coral 
  Rag, 
  and 
  Supra- 
  

   coralline 
  beds. 
  

  

  Classes. 
  

  

  Protozoa 
  

  

  Ccelenterata 
  

  

  Annelida 
  

  

  Crustacea 
  . 
  . 
  

  

  Ast 
  eriadae 
  . 
  . 
  

  

  Crinoidea 
  .. 
  

  

  Ecbinoidea 
  . 
  . 
  

  

  Bryozoa 
  

  

  /Brachiopoda 
  

  

  Monomyaria 
  

  

  Dimyaria 
  

  

  \ 
  Gasteropoda 
  

  

  Ammonites 
  .. 
  

  

  Belemnites 
  ... 
  

  

  Nautili 
  

  

  Pisces 
  , 
  

  

  Reptilia 
  , 
  

  

  Plantae 
  

  

  4 
  

  

  10 
  

  

  5 
  

  

  2 
  

  

  1 
  

  

  3 
  

  

  19 
  

  

  1 
  

  

  8 
  

  

  51 
  

  

  89 
  

  

  57 
  

  

  16 
  

  

  7 
  

  

  2 
  

  

  6 
  

  

  4 
  

  

  3 
  

  

  288 
  

  

  

  3 
  

   4 
  

   3 
  

  

  2 
  

   1 
  

  

  2 
  

  

  8 
  

   1 
  

   5 
  

  

  10 
  

  

  27 
  

   9 
  

   7 
  

   2 
  

   1 
  

   1 
  

   3 
  

   2 
  

  

  100 
  

  

  O 
  

  

  31 
  

   47 
  

   16 
  

   3 
  

   3 
  

   1 
  

   4 
  

   4 
  

   3 
  

  

  124 
  

  

  a 
  

  

  3 
  

   13 
  

  

  3 
  

  

  28 
  

  

  28 
  

  

  45 
  

  

  3 
  

  

  138 
  

  

  o 
  m 
  

   02 
  

  

  22 
  

  

  Reference 
  is 
  often 
  made 
  to 
  Phillips's 
  'Geology 
  of 
  Yorkshire 
  ; 
  ' 
  

   and 
  when 
  the 
  fauna 
  of 
  Yorkshire 
  was 
  under 
  consideration, 
  I 
  found 
  it 
  

   convenient 
  to 
  construct 
  the 
  following 
  Table 
  (XVI.) 
  showing 
  the 
  distri- 
  

   bution 
  of 
  the 
  species 
  through 
  all 
  the 
  Jurassic 
  formations. 
  I 
  insert 
  it 
  

   here, 
  after 
  the 
  paper 
  by 
  Mr. 
  Hudleston, 
  as 
  the 
  most 
  fitting 
  place. 
  

   Six 
  of 
  the 
  seven 
  divisions 
  of 
  the 
  Mollusca 
  play 
  a 
  very 
  important 
  part 
  

   in 
  the 
  palaeontology 
  of 
  the 
  county, 
  and 
  show 
  singular 
  and 
  unexpected 
  

   results. 
  I 
  have 
  added 
  a 
  column 
  for 
  the 
  number 
  of 
  appearances 
  for 
  

   each 
  class 
  through 
  the 
  formations. 
  Professor 
  Phillips 
  did 
  not 
  add 
  

   much 
  to 
  the 
  fauna 
  of 
  Yorkshire 
  in 
  his 
  last 
  edition 
  ; 
  he 
  chiefly 
  cor- 
  

   rected 
  the 
  nomenclature 
  and 
  recast 
  the 
  literature, 
  the 
  chief 
  palaeon- 
  

   tological 
  addition 
  occurring 
  among 
  the 
  Plantae. 
  

  

  