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  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  A. 
  The 
  Lower 
  Lias 
  Crinoidea 
  number 
  7 
  genera 
  and 
  

  

  „ 
  Middle 
  „ 
  „ 
  „ 
  3 
  

  

  ,, 
  Upper 
  ,, 
  „ 
  „ 
  2 
  „ 
  

  

  ,, 
  Inferior 
  Oolite 
  ., 
  „ 
  1 
  ., 
  

  

  B. 
  The 
  Lower 
  Lias 
  Asteroidea 
  , 
  2 
  ,, 
  

  

  „ 
  Middle 
  „ 
  , 
  „ 
  10 
  

  

  „ 
  L 
  T 
  pper 
  „ 
  „ 
  ,, 
  none 
  

  

  ,, 
  Inferior 
  Oolite 
  „ 
  , 
  4 
  ,, 
  

  

  C. 
  The 
  Lower 
  Lias 
  Echinoidea 
  Endocvclica 
  . 
  ., 
  4 
  „ 
  

  

  „ 
  Middle 
  „ 
  „ 
  „ 
  

  

  ,, 
  Upper 
  ,, 
  ,, 
  „ 
  ., 
  5 
  

  

  „ 
  Inferior 
  Oolite 
  „ 
  ,, 
  „ 
  11 
  „ 
  

  

  D. 
  The 
  Lower 
  Lias 
  Echinoidea 
  Exocyclica 
  . 
  ,, 
  none 
  

  

  „ 
  Middle 
  „ 
  „ 
  „ 
  „ 
  none 
  

  

  „ 
  Upper 
  „ 
  „ 
  „ 
  „ 
  none 
  

  

  „ 
  Inferior 
  Oolite 
  ,, 
  „ 
  ,, 
  7 
  

  

  Occurrences 
  59 
  

  

  7 
  species 
  

   11 
  ,. 
  

   7 
  „ 
  

   2 
  

   o 
  

  

  16 
  ," 
  

  

  none 
  

  

  7 
  „ 
  

  

  7 
  „ 
  

  

  3 
  „ 
  

  

  7 
  „ 
  

   25 
  „ 
  

   none 
  

   none 
  

   none 
  

   16 
  „ 
  

  

  110 
  

  

  Akneltda. 
  — 
  Serpula 
  with 
  9 
  species, 
  and 
  Vermicidaria 
  and 
  Ver- 
  

   milia 
  with 
  one 
  species 
  in 
  each, 
  constitute 
  the 
  Annelidan 
  fauna 
  of 
  the 
  

   Inferior 
  Oolite. 
  Verm 
  ilia 
  sulcata, 
  Serpula 
  social 
  is 
  and 
  S. 
  Umax 
  

   come 
  up 
  from 
  the 
  Lower 
  and 
  Upper 
  Lias. 
  None 
  of 
  the 
  11 
  species 
  

   pass 
  to 
  higher 
  horizons, 
  although 
  1(5 
  species 
  occur 
  in 
  the 
  higher 
  

   members. 
  All 
  together 
  we 
  know 
  of 
  45 
  Jurassic 
  species, 
  the 
  Inferior 
  

   Oolite 
  containing 
  the 
  greatest 
  number 
  (11). 
  

  

  Crustacea. 
  — 
  The 
  only 
  Decapod 
  known 
  in 
  the 
  Inferior 
  Oolite 
  is 
  

   Gh/phea 
  rostrata,; 
  and 
  this 
  Macruran 
  ranges 
  up 
  to 
  the 
  Coralline 
  Oolite. 
  

   The 
  Uhyllopod 
  Estheria 
  concenirica 
  is 
  confined 
  to 
  this 
  horizon. 
  

   Doubtless 
  the 
  Decapoda 
  are 
  better 
  represented, 
  as 
  many 
  fragments 
  of 
  

   undetermined 
  species 
  frequently 
  occur. 
  The 
  Lower 
  Lias 
  contains 
  by 
  

   far 
  the 
  richest 
  fauna, 
  no 
  less 
  than 
  12 
  genera 
  and 
  33 
  species. 
  

  

  Bryozoa. 
  — 
  7 
  genera 
  and 
  17 
  species 
  occur 
  in 
  the 
  Inferior 
  Oolite, 
  

   viz. 
  Berenkea 
  1 
  species, 
  Ceriopora 
  2, 
  Diastopora 
  9, 
  Hcteropora 
  2, 
  

   Spiropora 
  1, 
  Stomatopora 
  ? 
  1, 
  and 
  Theonoa 
  1 
  species. 
  Diastopora 
  

   cricopora, 
  Vine, 
  and 
  /). 
  oolitica, 
  Yine, 
  occur 
  also 
  in 
  the 
  Fuller's 
  Earth 
  

   and 
  Great 
  Oolite, 
  where 
  they 
  are 
  associated 
  with 
  Heteropora 
  conifem 
  

   and 
  H. 
  pustulosa. 
  The 
  species 
  in 
  the 
  Great 
  Oolito 
  number 
  31, 
  many 
  

   of 
  which 
  (7) 
  pass 
  up 
  from 
  the 
  Inferior 
  Oolite. 
  The 
  whole 
  of 
  the 
  

   known 
  Jurassic 
  Bryozoa 
  from 
  the 
  Lower 
  Lias 
  to 
  the 
  Corallian 
  beds 
  

   (we 
  know 
  none 
  higher) 
  consist 
  of 
  19 
  genera 
  and 
  51 
  species. 
  

  

  Brachiopoda. 
  — 
  10 
  genera 
  and 
  90 
  species 
  range 
  through 
  the 
  

   Inferior- 
  Oolite 
  series. 
  The 
  genus 
  Terebratula 
  contains 
  31 
  species, 
  

   Waldheimia 
  13, 
  Theciclium 
  9, 
  and 
  Rliynclionella 
  23 
  : 
  Lingida 
  only 
  

   1 
  species 
  ; 
  the 
  remaining 
  5 
  genera 
  are 
  poorly 
  represented. 
  5 
  genera 
  

   and 
  8 
  species 
  connect 
  the 
  Lias 
  and 
  Inferior 
  Oolite 
  ; 
  they 
  are 
  

   Discina 
  orbicularis, 
  Lingula 
  Beanii, 
  BJtyndionella 
  plicatella, 
  Tere- 
  

   bratula 
  infra- 
  oolitica, 
  T. 
  spliairoidalis, 
  Tliecidium 
  Bovchardi, 
  T. 
  

   triangulare, 
  and 
  T. 
  Dcslowjcliampsii. 
  These 
  species 
  are 
  Upper 
  Lias. 
  

   One 
  species 
  only, 
  Thecidium 
  triangulare, 
  ranges 
  through 
  the 
  whole 
  

   of 
  the 
  Lias 
  and 
  Inferior 
  Oolite. 
  

  

  The 
  numerical 
  value 
  of 
  the 
  genera 
  Terebratula, 
  Waldheimia, 
  

  

  