﻿\ 
  STORE 
  

  

  aii.i 
  and 
  N< 
  \\ 
  Fork. 
  Lapworth 
  found 
  the 
  Normans 
  kill 
  

   fauna 
  typically 
  represented 
  al 
  oumeroua 
  localities 
  and 
  termed 
  it 
  

   Bonin 
  river 
  or 
  Ooenograptua 
  zone. 
  Thia 
  La 
  followed 
  by 
  

   anothi 
  h 
  a 
  similar 
  graptolite 
  fauna. 
  

  

  .\.< 
  to 
  the 
  taxonomic 
  relatione 
  of 
  these 
  two 
  zones, 
  Prof. 
  Lap 
  

   \\«>rtli 
  arrived 
  at 
  the 
  following 
  p. 
  17<> 
  loc. 
  cit. 
  

  

  There 
  can 
  be 
  no 
  q 
  neat 
  ion 
  of 
  the 
  genera] 
  identity 
  of 
  this 
  Griffin's 
  

  

  and 
  the 
  Bfarsouin 
  i 
  graptua 
  zone 
  with 
  thai 
  of 
  the 
  

  

  kill 
  of 
  the 
  Hudson 
  river 
  valley. 
  The 
  New 
  York 
  geolo- 
  

  

  ave 
  alwaya 
  adhered 
  to 
  the 
  opinion 
  that 
  the 
  Normana 
  kill 
  

  

  :' 
  the 
  age 
  of 
  the 
  Hndaon 
  river 
  gronp 
  (Lorraine) 
  or 
  of 
  that 
  

  

  of 
  the 
  (Jtica 
  slate. 
  

  

  But 
  here 
  we 
  have 
  to 
  recollect 
  that, 
  with 
  the 
  exception 
  of 
  Whit- 
  

   fteld'a 
  distinct 
  assertion 
  that 
  <;. 
  aerratulns, 
  Hall 
  occurs 
  in 
  

   the 
  Qtica 
  alate 
  of 
  Oxtungo 
  creek— 
  which 
  may 
  be 
  easily 
  accounted 
  

   for 
  on 
  the 
  anpposition 
  that 
  what 
  Whitfield 
  calls 
  a 
  Didyn 
  

   gra 
  ptna 
  may 
  possibly 
  be 
  a 
  L 
  e 
  p 
  t 
  o 
  g 
  ra 
  p 
  tu 
  s— 
  not 
  a 
  shadow 
  

   of 
  paleontologic 
  evidence 
  has 
  yet 
  been 
  adduced 
  to 
  ahow 
  that 
  tl 
  

   Normans 
  kill 
  or 
  Maraouin 
  rocks 
  are 
  newer 
  than 
  the 
  Trenton. 
  

  

  I 
  will 
  uot 
  discuss 
  the 
  evidence 
  further 
  in 
  this 
  place, 
  but 
  will 
  

  

  merely 
  say 
  that 
  in 
  Great 
  Britain 
  the 
  fossils 
  of 
  the 
  < 
  graptua 
  

  

  kill) 
  zones 
  occur 
  in 
  tin- 
  beda 
  immediately 
  succeeding 
  

  

  the 
  typical 
  Llandeilo 
  limestone 
  of 
  Walts, 
  with 
  Ogygia 
  

  

  l» 
  u 
  c 
  h 
  i 
  i 
  and 
  A 
  B 
  a 
  ]» 
  h 
  u 
  s 
  t 
  y 
  r 
  a 
  n 
  n 
  u 
  s. 
  and 
  in 
  association 
  with 
  

  

  the 
  < 
  'raighead 
  (Stinchar) 
  Limestone 
  «►}• 
  Scotland, 
  with 
  M 
  a 
  c 
  1 
  n 
  r 
  e 
  a 
  

  

  1 
  oga 
  n 
  i 
  and 
  phi 
  1 
  eta 
  <• 
  o 
  m 
  j» 
  a 
  eta. 
  i. 
  e. 
  in 
  beda 
  apparently 
  

  

  homotaxeoufi 
  with 
  the 
  Chazy 
  or 
  lowest 
  Trenton 
  (Birdaeye 
  and 
  

  

  ck 
  river). 
  

  

  It', 
  therefore, 
  we 
  provisionally 
  regard 
  this 
  Normans 
  kill 
  (Mar- 
  

  

  d 
  and 
  Griffln'a 
  Cove) 
  zone 
  as 
  coming 
  between 
  the 
  Chazy 
  

  

  Maclurea) 
  and 
  the 
  Trenton 
  limestone 
  in 
  America, 
  it 
  will 
  

  

  [uivalent, 
  the 
  Ooenograptua 
  gracilis 
  zone 
  

   in 
  Great 
  Britain, 
  in 
  age 
  aa 
  well 
  as 
  in 
  fossils. 
  

  

  We 
  must 
  remember 
  that 
  they 
  appertain, 
  possibly, 
  almost 
  to 
  

   the 
  a 
  i 
  — 
  !- 
  «.f 
  thai 
  second 
  fauna, 
  i. 
  e. 
  their 
  place 
  is 
  

  

  allj 
  rrenton-Utica, 
  and 
  nut 
  Utica-Hudaan. 
  

  

  E. 
  0. 
  Ulrich 
  

  

  B. 
  ( 
  >. 
  Ulrich 
  cited 
  some 
  Normana 
  kill 
  graptolitea 
  from 
  the 
  CJtica 
  

  

  ' 
  incinnati 
  (35:183). 
  \- 
  these 
  have 
  not 
  been 
  mentioned 
  

  

  in 
  later 
  Lists 
  of 
  I 
  - 
  a 
  (49), 
  it 
  is 
  probable 
  thai 
  they 
  have 
  mean- 
  

  

  *nJ 
  fferently 
  determined, 
  and 
  that 
  the 
  Normans 
  kill 
  zone 
  

  

  Is 
  ""' 
  rep 
  d 
  the 
  regions 
  atudied 
  by 
  him. 
  

  

  