﻿JURASSIC 
  CLAYS 
  OF 
  LINCOLNSHIRE. 
  549 
  

  

  Clays 
  similar 
  to 
  those 
  of 
  Bardney 
  are 
  stated 
  to 
  occur 
  * 
  in 
  the 
  valley 
  

   near 
  Rand, 
  about 
  five 
  miles 
  north 
  of 
  Bardney. 
  

  

  At 
  the 
  Langworthy 
  brickyard 
  is 
  a 
  small 
  exposure 
  of 
  dark 
  clays. 
  

   These 
  had 
  not 
  been 
  worked 
  for 
  some 
  time, 
  and 
  fossils 
  were 
  not 
  

   abundant, 
  but 
  the 
  following 
  were 
  obtained 
  here 
  : 
  — 
  

  

  Ammonites 
  cordatus, 
  Sow. 
  

  

  Eugenii, 
  Rasp. 
  

  

  hecticus, 
  Mom. 
  

  

  t 
  Lamberti, 
  Sow. 
  

  

  Alaria 
  bispinosa, 
  Phil!. 
  

   Avicula 
  Muensteri, 
  Goldf. 
  

   Grryphasa 
  dilatata, 
  Sow. 
  

  

  

  Further 
  north, 
  a 
  short 
  distance 
  east 
  of 
  the 
  village 
  of 
  Bishop's 
  

   Norton, 
  dark 
  clays 
  occur, 
  containing 
  Belemnites 
  Owenii 
  in 
  abun- 
  

   dance, 
  together 
  with 
  : 
  — 
  

  

  Ichthyosaurus 
  (vertebrae). 
  

   Cerithium 
  muricatum, 
  Sow. 
  

   Gryphasa 
  dilatata, 
  Sow. 
  

  

  The 
  occurrence 
  of 
  the 
  first-named 
  fossil 
  in 
  such 
  large 
  numbers, 
  

   places 
  these 
  clays 
  in 
  zone 
  3 
  of 
  Prof. 
  Judd, 
  i 
  . 
  e. 
  clays 
  with 
  Belemnites 
  

   Owenii. 
  

  

  About 
  1| 
  mile 
  east 
  of 
  the 
  last-mentioned 
  pit 
  (| 
  mile 
  south 
  of 
  

   Peaseholme 
  on 
  Survey 
  Map) 
  is 
  another 
  brickyard 
  showing 
  dark 
  

   blue 
  clays, 
  from 
  which 
  were 
  obtained 
  Belemnites 
  hastatus, 
  Montf. 
  

   (common), 
  a 
  small 
  pyritized 
  Ammonite, 
  and 
  Grypkcea 
  dilatata, 
  Sow. 
  

   This 
  pit 
  is 
  on 
  the 
  horizon 
  of 
  Judd's 
  zone 
  4. 
  

  

  Clays 
  belonging 
  to 
  a 
  somewhat 
  higher 
  horizon 
  (zone 
  of 
  ornati 
  

   Ammonites) 
  were 
  met 
  with 
  in 
  a 
  well-boring 
  west 
  of 
  Bishop's 
  Bridge. 
  

   The 
  following 
  fossils 
  are 
  recorded 
  J 
  from 
  here 
  : 
  — 
  

  

  Ammonites 
  plicatilis. 
  Ammonites 
  Duneani. 
  

   hecticus, 
  var. 
  canaliculars. 
  Lamberti. 
  

  

  The 
  Oxford 
  Clay 
  is 
  also 
  worked 
  in 
  the 
  brickyard 
  | 
  mile 
  north-east 
  

   of 
  Timberland 
  Church, 
  Snarford 
  Hill, 
  and 
  | 
  mile 
  east 
  of 
  Normanby 
  

   Church 
  §. 
  

  

  The 
  clays 
  in 
  the 
  above-mentioned 
  sections 
  appear, 
  from 
  their 
  

   fossils, 
  to 
  belong 
  to 
  four 
  of 
  the 
  zones 
  recognized 
  by 
  Prof. 
  Judd 
  in 
  

   South 
  Lincolnshire, 
  and 
  may 
  be 
  arranged 
  as 
  follows 
  in 
  descending 
  

   order: 
  — 
  

  

  4. 
  Clays 
  with 
  cordati 
  Ammonites 
  (Bardney 
  and 
  Rand) 
  = 
  Judd's 
  

  

  zone 
  6. 
  

   3. 
  Clays 
  with 
  ornati 
  Ammonites 
  (Bishop's 
  Bridge) 
  = 
  Judd's 
  

  

  zone 
  5. 
  

   2. 
  Clays 
  with 
  Belemnites 
  hastatus 
  (south 
  of 
  Peaseholme) 
  = 
  

  

  Judd's 
  zone 
  4. 
  

   1. 
  Clays 
  with 
  Belemnites 
  Owenii 
  (Bishop's 
  Norton) 
  = 
  Judd's 
  

  

  zone 
  3. 
  

  

  Further 
  west, 
  the 
  Kellaways 
  Rock 
  has 
  been 
  recognized 
  in 
  several 
  

   localities 
  ||. 
  

  

  * 
  Survey 
  Mem. 
  sheet 
  83, 
  p. 
  77. 
  t 
  In 
  Jermyn 
  Street 
  Museum. 
  

  

  \ 
  Survey 
  Mem. 
  sheet 
  83, 
  p. 
  78. 
  § 
  Survey 
  Memoir, 
  sheet 
  83, 
  p. 
  77. 
  

  

  || 
  Ibid. 
  pp. 
  75-76. 
  

  

  