﻿JURASSIC 
  ROCKS 
  : 
  SRIPERMATOOR 
  AREA. 
  

  

  107 
  

  

  The 
  same 
  predominance 
  of 
  vegetable 
  remains 
  was 
  observed 
  in 
  the 
  shales 
  

   at 
  the 
  south 
  end 
  of 
  the 
  Vellum 
  tank. 
  Vellakottei 
  section 
  yielded 
  only 
  

   a 
  few 
  fragmentary 
  remains 
  of 
  Bictyopteris 
  and 
  Paleeozamia. 
  In 
  Vellarei 
  

   and 
  Nallur 
  tanks 
  and 
  the 
  Amerumbode 
  channel 
  section, 
  the 
  remains 
  of 
  

   marine 
  shells 
  are 
  nearly 
  or 
  quite 
  as 
  numerous 
  as 
  those 
  of 
  plants. 
  

  

  A 
  remarkable 
  feature 
  in 
  the 
  mode 
  of 
  occurrence 
  of 
  many 
  of 
  the 
  

   fossils 
  was 
  noted, 
  namely, 
  that 
  the 
  organic 
  impression 
  or 
  cast 
  was 
  

   generally 
  covered 
  with 
  a 
  thin 
  film 
  of 
  red 
  color 
  contrasting 
  strikingly 
  

   with 
  the 
  pale-grey, 
  white 
  or 
  pale, 
  buff 
  of 
  the 
  matrix. 
  Occasionally 
  the 
  

   color 
  spreads 
  beyond 
  the 
  organism 
  on 
  to 
  the 
  surface 
  of 
  the 
  shale, 
  but, 
  as 
  

   a 
  rule, 
  it 
  is 
  strictly 
  confined 
  to 
  the 
  enclosed 
  body, 
  and 
  appears 
  to 
  occupy 
  

   part 
  of 
  the 
  space 
  once 
  filled 
  by 
  the 
  organic 
  matter. 
  

  

  The 
  vegetable 
  remains 
  are 
  chiefly 
  fragments 
  of 
  branches 
  and 
  fronds 
  

   drifted 
  out 
  to 
  sea, 
  but 
  they 
  are 
  well 
  preserved, 
  and 
  among 
  the 
  shells 
  

   many 
  (the 
  majority, 
  I 
  think,) 
  show 
  both 
  valves. 
  

  

  The 
  following 
  list 
  was 
  drawn 
  up 
  in 
  the 
  field 
  and 
  can 
  only 
  be 
  

  

  considered 
  as 
  an 
  approximately 
  correct 
  one 
  : 
  — 
  

  

  Plants. 
  

   PalcBOzarnia 
  Cutcliensis 
  ?. 
  

  

  „ 
  acutifolia 
  '!. 
  

  

  ,, 
  Bengalensis 
  ?■ 
  

  

  „ 
  n. 
  spec. 
  1 
  f 
  

   Pterophyllum. 
  

   Teeniopteris. 
  

   Stangerites. 
  

   Sphenopteris. 
  

   Pecopteris. 
  

   Dictyopteris. 
  

   Lycopodium. 
  

   Equisetites. 
  

   Poaoites. 
  

   Scales 
  or 
  bracts. 
  

   Seed 
  vessels 
  . 
  

   Taxodites 
  spec. 
  ? 
  

  

  None 
  of 
  the 
  fossils 
  in 
  the 
  above 
  list 
  give 
  any 
  decided 
  evidence 
  as 
  

  

  Animals. 
  

   Fish 
  scales. 
  

  

  Ammonites, 
  2 
  or 
  3 
  spec, 
  

   Belemnites 
  ? 
  (a 
  long 
  phragmocone 
  ?) 
  

   Patella 
  1 
  

   Rhynchonella 
  ? 
  ? 
  

   Cytherea 
  ? 
  

   Cypricardia. 
  

   Tellina 
  ? 
  i 
  

  

  Anatina 
  (Thracia) 
  ? 
  

   Leda, 
  2 
  or 
  3 
  spec, 
  or 
  varieties, 
  

   Luaina 
  ? 
  

   Cultellus 
  ? 
  

   Ostrea. 
  

   Inoceramus. 
  

   Lima. 
  

   Pecten. 
  

  

  to 
  the 
  exact 
  age 
  of 
  these 
  formations. 
  

  

  ( 
  107 
  ) 
  

  

  