﻿1864.] 
  

  

  DAWKINS 
  RUSTIC 
  BEDS 
  A.ND 
  WHITE 
  LIAS. 
  

  

  401 
  

  

  No. 
  

  

  Thick- 
  

   ness. 
  

  

  Description. 
  

  

  Fossils. 
  

  

  

  Inches. 
  

  

  

  

  4. 
  

  

  6 
  

  

  Black 
  shale. 
  

  

  

  5. 
  

  

  4 
  

  

  Black 
  muddy 
  incoherent 
  sand- 
  

   stone, 
  ripple-marked, 
  pyritous. 
  

  

  

  6. 
  

  

  6 
  

  

  Black 
  shale. 
  

  

  

  7. 
  

  

  2 
  

  

  Limestone, 
  with 
  layers 
  of 
  fibrous 
  

   carbonate 
  of 
  lime, 
  hard, 
  dark, 
  

   pyritous, 
  sandy. 
  

  

  

  8. 
  

  

  6 
  

  

  Black 
  shale. 
  

  

  

  9. 
  

  

  1 
  

  

  Shelly 
  limestone. 
  

  

  A. 
  contorta. 
  

   Pleurophorus. 
  

  

  10. 
  

  

  40 
  

  

  Black 
  shale, 
  containing 
  nodules 
  

   and 
  calcareous 
  seams. 
  

  

  

  11. 
  

  

  3-4 
  

  

  Irregular 
  shelly 
  limestone. 
  

  

  Avicula 
  contorta. 
  

   Modiola 
  minima. 
  

  

  12. 
  

  

  

  Black 
  shale. 
  

  

  

  13. 
  

  

  20 
  

  

  Six 
  thin 
  layers 
  of 
  arenaceous 
  

  

  Avicula 
  contorta. 
  

  

  

  

  limestone, 
  ripple-marked, 
  mi- 
  

  

  Pullastra 
  arenicola. 
  

  

  

  

  caceous, 
  sandy, 
  with 
  layers 
  of 
  

  

  Pleurophorus 
  elongatus. 
  

  

  

  

  fibrous 
  carbonate 
  of 
  lime. 
  

  

  

  14. 
  

  

  2-3 
  

  

  Bone-bed, 
  sandy, 
  with 
  quartz- 
  

  

  Acrodus 
  minimus. 
  

  

  

  

  pebbles 
  and 
  limestone-nodules. 
  

  

  Acrodus 
  acutus. 
  

  

  

  

  On 
  tracing 
  it, 
  I 
  found 
  that 
  it 
  

  

  Gyrolepis 
  Alberti. 
  

  

  

  

  passed 
  into 
  an 
  impure 
  micace- 
  

  

  Gyrolepis 
  tenuistriatus. 
  

  

  

  

  ous 
  limestone. 
  

  

  Axinus 
  elongatus. 
  

   Axinus 
  depressus. 
  

  

  15. 
  

  

  

  Black 
  shale. 
  

  

  

  16. 
  

  

  2-3 
  

  

  Bone-bed 
  — 
  a 
  hard 
  sandy 
  lime- 
  

  

  Saurichthys 
  apicalis. 
  

  

  

  

  stone. 
  

  

  Saurichthys 
  acuminatus. 
  

   Sargodon 
  Tomicus. 
  

   Hybodus 
  minor. 
  

   Gyrolepis 
  Alberti. 
  

   Gyrolepis 
  tenuistriatus. 
  

   Acrodus 
  minimus. 
  

   Acrodus 
  acutus. 
  

   Lepidotus. 
  

   Squaloraia. 
  

   Pullastra 
  arenicola. 
  

   Myophoria 
  postera. 
  

   Axinus 
  cloacinus. 
  

  

  17. 
  

  

  

  Black 
  shale. 
  

  

  

  18. 
  

  

  1-2 
  

  

  Pleurophorus 
  limestone. 
  

  

  Pleurophorus 
  angulatus. 
  

   Pteromya 
  Crowcombeia. 
  

   Cardium 
  Rhaticum. 
  

   Chemnitzia 
  nitida. 
  

  

  19. 
  

  

  

  Black 
  shale. 
  

  

  

  20. 
  

  

  1-2 
  

  

  Earthy 
  micaceous 
  limestone, 
  com- 
  

  

  Hybodus 
  plicatilis. 
  

  

  

  

  posed 
  in 
  great 
  part 
  of 
  Cardium 
  

  

  Hybodus 
  pyramidalis. 
  

  

  

  

  Rhaticum. 
  

  

  Avicula 
  contorta. 
  

   Avicula 
  solitaria 
  ? 
  

   Myophoria 
  postera. 
  

   Pleurophorus 
  elongatus. 
  

   Anatina 
  Suessi. 
  

   Cypricardia 
  suevica. 
  

   Cardium 
  Rhceticum. 
  

   Trigonia 
  curvirostris. 
  

   Pecten 
  Rhcsticus. 
  

  

  