﻿SUBDIVISIONS 
  OF 
  THE 
  SPEETON 
  CLAY. 
  

  

  591 
  

  

  Fossils 
  of 
  the 
  Zone 
  of 
  Belemnites 
  lateralis, 
  Phil. 
  

  

  

  4 
  

  

  a 
  

  

  o 
  

   O 
  

  

  E. 
  

  

  CO 
  

  

  ■-a 
  

  

  CD 
  

   CD 
  

  

  pq 
  

  

  B6. 
  

  

  03 
  

  

  Ti 
  CD 
  

   CO 
  I 
  

  

  5 
  §4. 
  

  

  no 
  

   >> 
  

  

  a 
  c3 
  

  

  T3 
  

  

  pq 
  

  

  11 
  

   o 
  

   1. 
  

  

  CO 
  

  

  CD 
  

   rQ 
  

  

  U 
  

   CD 
  

  

  -a 
  

   a 
  

  

  

  ? 
  

  

  * 
  

  

  x 
  

  

  * 
  

   * 
  

  

  * 
  

   ? 
  

  

  * 
  

   * 
  

  

  •Sfr 
  

  

  * 
  

  

  * 
  " 
  pebble." 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  # 
  

  

  X 
  

  

  X 
  

  

  * 
  

   X 
  

  

  X 
  

  

  X 
  

  

  * 
  

  

  (absolutus, 
  Fisch., 
  see 
  Pavlow 
  1 
  ) 
  

  

  Ammonites 
  Gravesianus, 
  B'Orb. 
  ... 
  

  

  noricus, 
  SchlotJi., 
  and 
  varieties 
  

  

  rotula, 
  Phil, 
  (kaschpuricus, 
  

  

  Trend., 
  see 
  Pavlow 
  2 
  ) 
  

  

  — 
  — 
  sp. 
  (of. 
  subditus, 
  Traut., 
  see 
  Pav- 
  

  

  

  

  

  Crioceras 
  (Ancyloceras), 
  sp 
  

  

  

  Avellana 
  (Auricula) 
  obsoleta, 
  Phill. 
  

  

  

  Exogyra 
  sinuata, 
  Sow. 
  (Oouloni, 
  

   BOrb.,of 
  Judd) 
  

  

  

  

  

  Plica-tula, 
  sp 
  

  

  

  t 
  Avicula 
  inaequivalvis, 
  Sow 
  

  

  * 
  

  

  Nucula, 
  sp. 
  (ovata 
  of 
  LecJcenby 
  4 
  ) 
  ... 
  

  

  , 
  sp. 
  (subrecurva 
  of 
  LecJcenby 
  ^) 
  

  

  Lucina 
  portlandica 
  ?, 
  Sow. 
  (casts)... 
  

  

  Astarte 
  senecta, 
  Bean, 
  MS 
  

  

  Panopasa 
  (plicata?, 
  Sow.) 
  

  

  Thracia 
  (depressa 
  of 
  LecJcenby) 
  

  

  Pholadomya 
  (decussata, 
  Phil., 
  of 
  

   LecJcenby) 
  

  

  Terebratula 
  (? 
  subundata 
  of 
  LecJc- 
  

   enby) 
  

  

  

  

  * 
  

  

  inconstans 
  ?, 
  Sow. 
  

  

  Lingula 
  ovalis 
  5 
  ?, 
  Sow 
  

  

  tPecten 
  lens, 
  Sow., 
  var. 
  Morini, 
  

   Be 
  Lor 
  

  

  

  

  

  

  t 
  These 
  species 
  are 
  recorded 
  for 
  the 
  first 
  time. 
  

  

  1 
  A 
  Pavlow, 
  ' 
  Etudes 
  sur 
  les 
  Couches 
  Jurassiques 
  et 
  Cretacees 
  cle 
  la 
  E-ussie 
  ' 
  

   (Moscow, 
  1889), 
  p. 
  43. 
  2 
  Op. 
  cit. 
  p. 
  45, 
  and 
  plate. 
  

  

  3 
  Op. 
  cit. 
  p. 
  46. 
  4 
  ' 
  Geologist,' 
  ii. 
  p. 
  9. 
  

  

  5 
  Lingula 
  ovalis 
  ?, 
  Sow. 
  The 
  species 
  abundant 
  in 
  the 
  Lingula-bed 
  B 
  5 
  was 
  

   at 
  first 
  doubtfully 
  referred 
  to 
  Lingula 
  truncata, 
  Sow., 
  but 
  a 
  later 
  opinion 
  indi- 
  

   cates 
  that 
  it 
  is 
  close 
  to 
  L. 
  ovalis, 
  Sow. 
  ; 
  and 
  as 
  it 
  occurs 
  in 
  that 
  portion 
  of 
  the 
  

   section 
  which 
  has 
  Jurassic 
  affinities, 
  I 
  have 
  preferred 
  to 
  use 
  the 
  latter 
  name. 
  

   It 
  is, 
  however, 
  a 
  larger 
  shell 
  than 
  the 
  species 
  in 
  the 
  bituminous 
  shales, 
  which 
  

   is 
  always 
  small. 
  

  

  Q. 
  J. 
  G. 
  S. 
  No. 
  180. 
  2 
  x 
  

  

  