﻿i: 
  Ml 
  SI. 
  I 
  M 
  

  

  middle 
  and 
  apper 
  Trenton 
  must, 
  hence, 
  be 
  either 
  absent 
  

   of 
  ; 
  of 
  the 
  appearance 
  of 
  the 
  Hudson 
  river 
  

  

  shal*->. 
  The 
  latter 
  conclusion 
  seemfl 
  the 
  most 
  acceptable 
  to 
  the 
  

   writer 
  as 
  it 
  b 
  with 
  his 
  own 
  results 
  obtained 
  around 
  Albany. 
  

  

  C. 
  E. 
  Beecher 
  

  

  Tl 
  : 
  important 
  discovery 
  of 
  fossils 
  in 
  the 
  Hudson 
  river 
  

  

  -bales 
  was 
  made 
  by 
  G. 
  E. 
  Beecher 
  in 
  the 
  shales 
  near 
  

   the 
  old 
  Dudley 
  observatory, 
  a 
  short 
  distance 
  northwest 
  <»f 
  Al- 
  

   bany 
  (26). 
  The 
  following 
  fossils 
  were 
  identified: 
  Clima- 
  

   g 
  r 
  a 
  p 
  t 
  u 
  s 
  bicornis, 
  Dicranograptus 
  ramosus, 
  

   Diplograptus 
  m 
  u 
  <• 
  r 
  o 
  n 
  a 
  t 
  u 
  s, 
  crinoid 
  stems, 
  T 
  r 
  e 
  m 
  a 
  - 
  

  

  3 
  terminalis, 
  Leptaena 
  sericea, 
  L. 
  sub 
  tent 
  a, 
  

   r 
  t 
  h 
  i 
  a 
  testudinaria, 
  Z 
  y 
  g 
  o 
  sp 
  i 
  r 
  a 
  modesta, 
  A 
  v 
  - 
  

   ic 
  nla 
  trentonensis, 
  C 
  1 
  e 
  i 
  d 
  o 
  p 
  h 
  o 
  r 
  u 
  s 
  planulatus, 
  

   A 
  in 
  1» 
  o 
  n 
  y 
  c 
  h 
  i 
  a 
  o 
  n 
  d 
  u 
  1 
  a 
  t 
  a 
  . 
  T 
  el 
  1 
  i 
  no 
  m 
  y 
  a 
  d 
  u 
  b 
  ia 
  , 
  T. 
  

   1 
  e 
  v 
  a 
  t 
  a 
  , 
  L 
  y 
  r 
  o 
  d 
  e 
  s 
  m 
  a 
  p 
  o 
  b 
  a 
  t 
  u 
  m 
  , 
  10 
  undi 
  

  

  mined 
  species 
  of 
  lamellibranchiata, 
  II 
  y 
  o 
  1 
  i 
  t 
  h 
  e 
  s 
  anieri- 
  

   d 
  u 
  s, 
  II. 
  sp.?, 
  B 
  el 
  1 
  e 
  r 
  o 
  p 
  h 
  o 
  n 
  b 
  i 
  1 
  o 
  b 
  at 
  us, 
  B. 
  can- 
  

  

  llatue, 
  Murchisonia 
  gracilis, 
  Endocer 
  

   p 
  r 
  f 
  o 
  r 
  in 
  e 
  . 
  ( 
  > 
  r 
  t 
  h 
  o 
  c 
  eras 
  bi 
  1 
  i 
  n 
  e 
  a 
  t 
  u 
  m 
  ?, 
  C 
  o 
  r 
  n- 
  

  

  ulitcs 
  f 
  lexuosus, 
  Plumnlites 
  sp.?, 
  Triarthrus 
  

   b 
  <• 
  c 
  k 
  i 
  . 
  T 
  i' 
  i 
  ii 
  u 
  c 
  lens 
  c 
  o 
  n 
  c 
  e 
  n 
  t 
  ri 
  en 
  s. 
  

  

  Beecher 
  referred 
  this 
  fauna 
  to 
  the 
  Utica 
  epoch, 
  and 
  Waleott 
  

   : 
  345) 
  later 
  declared 
  it 
  to 
  be 
  " 
  as 
  a 
  whole, 
  characteristic 
  

   of 
  the 
  upper 
  portion 
  of 
  the 
  Utica 
  shale 
  in 
  the 
  Mohawk 
  valley 
  

   and 
  of 
  the 
  pi 
  beds 
  between 
  the 
  Utica 
  shale 
  zone 
  and 
  the 
  

  

  lower 
  portion 
  of 
  the 
  Lorraine 
  Bhales 
  in 
  the 
  section 
  at 
  Lorraine, 
  

   Jefferson 
  oo. 
  N. 
  Y." 
  

  

  The 
  import 
  of 
  this 
  discovery 
  is 
  that 
  it 
  establishes 
  the 
  hitherto 
  

   only 
  Buspected 
  presence 
  of 
  the 
  i 
  imong 
  the 
  shales 
  of 
  

  

  the 
  Hudson 
  valley, 
  but 
  it 
  does 
  not 
  ? 
  i 
  the 
  conclusion 
  of 
  

  

  f 
  the 
  Normans 
  kill 
  graptolite 
  fauna, 
  for 
  of 
  the 
  

   tin-- 
  b 
  found 
  by 
  Beecher, 
  two, 
  Climacograptua 
  

  

  bicornis 
  and 
  Dicranograptus 
  ramosus, 
  are 
  com- 
  

   i 
  both 
  the 
  Norn 
  ill 
  and 
  Utica 
  faunas, 
  and 
  the 
  third, 
  

  

  