﻿v 
  JORK 
  STATS 
  mi 
  si 
  i 
  m 
  

  

  the 
  Budson 
  river 
  group, 
  as 
  indicated 
  i».\ 
  Matter 
  in 
  L843 
  and 
  

   some 
  member 
  of 
  the 
  Trenton 
  period 
  ".' 
  

  

  ,:iil 
  " 
  seems 
  to 
  the 
  writer 
  thai 
  the 
  evidence 
  afforded 
  by 
  the* 
  

   aas 
  been 
  bere 
  somewhat 
  strained 
  to 
  bring 
  the 
  facts 
  into 
  

  

  ordance 
  with 
  Hall's 
  dewsj 
  for, 
  while 
  Or 
  this 
  testudi 
  n- 
  

   ;l 
  ' 
  ' 
  ;1 
  - 
  '• 
  '• 
  P 
  I 
  ; 
  » 
  e 
  n 
  a 
  s 
  e 
  i- 
  i 
  <• 
  ea, 
  8 
  I 
  ro 
  i» 
  b 
  o 
  m 
  en 
  a 
  alt 
  e 
  p. 
  

   11 
  » 
  I 
  ;t- 
  B 
  e 
  1 
  l 
  e 
  ro 
  i»hon 
  bilo 
  ba 
  t 
  o 
  a 
  are 
  noncommittal, 
  oc- 
  

   curring 
  from 
  the 
  Trenton 
  to 
  the 
  Lorraine 
  beds; 
  and 
  Bytho- 
  

   trephia 
  Babnodosa, 
  being 
  a 
  rather 
  indistinct 
  plant 
  frag- 
  

   ment, 
  is 
  of 
  little 
  or 
  no 
  taxonomic 
  value, 
  Orthis 
  pec 
  tinella 
  

  

  declared 
  bj 
  Hall 
  himself 
  (7H28) 
  to 
  occur 
  in 
  nearly 
  every 
  

   part 
  of 
  the 
  Trenton 
  limestone, 
  though 
  unknown 
  to 
  him 
  in 
  the 
  

   Hudson 
  river 
  gronp. 
  Theodore 
  <;. 
  White, 
  in 
  his 
  rery 
  useful 
  

   l 
  ;, 
  l 
  M 
  ' 
  r 
  ,: 
  » 
  ,x:; 
  - 
  :,)l 
  - 
  reports 
  Hi- 
  form 
  only 
  from 
  a 
  six 
  fool 
  bed 
  

   overlying 
  the 
  Black 
  river 
  limestone 
  of 
  the 
  Poland 
  limekiln 
  g 
  

   t^ 
  1 
  '- 
  '" 
  the 
  Cincinnati 
  region 
  and 
  in 
  Canada 
  the 
  fossil 
  is 
  found 
  

   in 
  the 
  Black 
  river 
  and 
  Trenton 
  beds, 
  and 
  Winehell 
  and 
  Urich 
  

   announce 
  it 
  in 
  their 
  carefully 
  prepared 
  lists 
  only 
  from 
  the 
  upper 
  

   Black 
  river 
  beds 
  of 
  Minnesota 
  i 
  19), 
  

  

  The 
  evidence 
  afforded 
  by 
  the 
  fossils 
  of 
  Poughkeepsie 
  would 
  

   ,h 
  '" 
  rather 
  indicate 
  for 
  these 
  Hudson 
  river 
  schists 
  the 
  age 
  of 
  the 
  

   Trenton 
  limestone. 
  

  

  J. 
  D. 
  Dana 
  and 
  W. 
  B. 
  Dwight 
  

  

  At 
  the 
  same 
  time 
  the 
  problem 
  of 
  the 
  Iludson 
  river 
  shales 
  was 
  

  

  approached 
  from 
  the 
  east 
  by 
  dames 
  l>. 
  Dana 
  (21), 
  who 
  found 
  

  

  that 
  the 
  Ave 
  limestone 
  belts 
  traversing 
  the 
  schists 
  east 
  of 
  the 
  

  

  Hudson 
  river 
  are 
  anticlines 
  of 
  limestones, 
  underlying 
  the 
  schists. 
  

  

  M 
  " 
  also 
  succeeded 
  in 
  finding 
  fossils 
  in 
  the 
  limestones 
  which 
  were 
  

  

  ribed 
  by 
  \\ 
  . 
  B. 
  Dwight 
  (23), 
  as 
  denoting 
  a 
  Trenton 
  fauna. 
  

  

  ■'■ 
  therefore, 
  concluded 
  that 
  the 
  " 
  Taconic 
  schists 
  " 
  overlying 
  

  

  the 
  limestone 
  are 
  of 
  Hudson 
  liver 
  aire. 
  

  

  Dwight 
  cites 
  the 
  following 
  fossils: 
  Or 
  this 
  tricenaria, 
  

   n 
  i" 
  •' 
  tinella, 
  <>. 
  test 
  u 
  din 
  aria, 
  Leptaena 
  seri- 
  

  

  I 
  meanwhile 
  (Manual 
  of 
  geology. 
  1874) 
  proposed 
  to 
  unite 
  the 
  

   Lorraine) 
  epochs 
  under 
  the 
  term 
  Trenton 
  

  

  