﻿•v 
  YORB 
  i 
  M 
  

  

  tricornis, 
  CarnUhera 
  sp.\ 
  D. 
  maMdus, 
  Hall) 
  

   >r\ 
  ooidefl 
  calicularis, 
  \ 
  ichoUon 
  

  

  Dawsonia 
  sp. 
  

  

  Bhombodictyon 
  *i>. 
  

  

  Of 
  these 
  Leptograptns 
  subtenuis, 
  D 
  i 
  c 
  el 
  1 
  o 
  - 
  

   g 
  p 
  a 
  p 
  i 
  u 
  s 
  i 
  n 
  tort 
  u 
  s, 
  1 
  i 
  m 
  a 
  c 
  o 
  g 
  r 
  a 
  ptm 
  p 
  a 
  r 
  v 
  u 
  s, 
  

   ii 
  i 
  a 
  and 
  R 
  b 
  o 
  m 
  bo 
  d 
  i 
  c 
  t 
  y 
  o 
  n 
  are 
  restricted 
  to 
  the 
  

   l>i' 
  while 
  Cr,yptograpt 
  us 
  tricornis 
  

  

  passes 
  from 
  the 
  Calciferous 
  into 
  the 
  lower 
  Eticellograptm 
  

   but 
  not 
  into 
  tin- 
  Dtica 
  or 
  Lorraine 
  beds. 
  This 
  shale 
  is. 
  hence, 
  

   an 
  unmistakable 
  representative 
  of 
  the 
  Normans 
  kill 
  or 
  lower 
  

   Dicellograptufl 
  beds, 
  and 
  this 
  interesting 
  discovery 
  demonstrates 
  

   the 
  presence 
  of 
  the 
  Normans 
  kill 
  fauna 
  only 
  a 
  few 
  hundred 
  yards 
  

   to 
  the 
  east 
  of 
  the 
  middle 
  Trenton 
  .fauna. 
  

  

  Following 
  the 
  section 
  farther 
  up 
  along 
  the 
  Poesten 
  kill, 
  alter- 
  

   nations 
  of 
  sandstones 
  and 
  black 
  argillaceous 
  shales 
  are 
  first 
  met 
  

   with, 
  then 
  a 
  lour 
  fool 
  conglomerate 
  with 
  black 
  shale 
  as 
  matrix, 
  

   at 
  the 
  water 
  tower 
  of 
  the 
  wire 
  mill; 
  above 
  this 
  alternations 
  of 
  

   fissile, 
  black 
  and 
  greenish 
  gray 
  shales 
  and 
  finally, 
  by 
  gradual 
  

   ance 
  of 
  the 
  black 
  shales, 
  only 
  green 
  shales. 
  On 
  the 
  

   "•1" 
  •:■ 
  Bide 
  of 
  the 
  Poesten 
  kill, 
  just 
  below 
  the 
  picturesque 
  water- 
  

   falls, 
  specimens 
  of 
  B 
  h 
  o 
  m 
  bodic 
  ty 
  on 
  were 
  found 
  in 
  a 
  black 
  

   shale, 
  intercalated 
  in 
  a 
  green 
  shale 
  the 
  latter 
  containing 
  great 
  

   quantities 
  of 
  fragments 
  of 
  algae. 
  These 
  shales 
  extend 
  eastward 
  

   - 
  eal 
  fault 
  which 
  brought 
  up 
  the 
  Cambrian 
  beds 
  

  

  tinsl 
  the 
  " 
  Hudson 
  river 
  shales 
  ". 
  

  

  Station 
  29. 
  Mount 
  Olympus, 
  Troy 
  

  

  Another 
  outcrop 
  of 
  graptolite 
  shale 
  was 
  found 
  '2 
  miles 
  farther 
  

   )i 
  ai 
  Mi 
  Olympus, 
  a 
  landmark 
  of 
  North 
  Troy, 
  consisting 
  of 
  a 
  

   cKfl 
  j 
  some 
  60 
  feel 
  above 
  the 
  alluvial 
  plain. 
  

  

  The 
  deep 
  Mack, 
  fissile 
  argillaceous 
  shales 
  contain: 
  

   Didymograpl 
  us 
  tenuis, 
  Hall 
  sp. 
  rr 
  

   Di< 
  j 
  ramosus, 
  //nil. 
  r 
  

  

  OJ 
  j 
  iu:: 
  ■■ 
  uk 
  bioornie, 
  IfaJl 
  cc 
  

  

  