﻿92 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  C. 
  modestus 
  Ruedemann 
  

   Retiograptus 
  geinitzianus 
  Hall 
  

  

  The 
  black 
  shale 
  in 
  a 
  small 
  railroad 
  cut 
  north 
  of 
  the 
  Schuylerville 
  

   station 
  proved 
  quite 
  fossiliferous. 
  1 
  It 
  has 
  furnished: 
  

  

  Corynoides 
  gracilis 
  Hopkins 
  on 
  

   Didymograptus 
  subtenuis 
  (Hall) 
  

   Leptograptus 
  flaccidus 
  mut. 
  trentonensis 
  Rued. 
  

   Dicranograptus 
  ramosus 
  Hall 
  

   Climacograptus 
  bicornis 
  Hall 
  

   C. 
  parvus 
  Hall 
  

  

  Graptospongia 
  pusilla 
  Ruedemann 
  2 
  

   Leptobolus 
  walcotti 
  Ruedemann 
  

  

  This 
  shale 
  with 
  its 
  characteristic 
  Normanskill 
  fauna 
  is 
  intercalated 
  

   in 
  the 
  white 
  beds. 
  

  

  The 
  shale 
  and 
  white 
  beds 
  abutting 
  at 
  the 
  north 
  and 
  south 
  against 
  

   the 
  Northumberland 
  plug 
  were 
  found 
  to 
  contain 
  Didymograp- 
  

   tus 
  Sagittarius, 
  showing 
  that 
  the 
  plug 
  is 
  undoubtedly 
  sur- 
  

   rounded 
  by 
  Normanskill 
  shale. 
  

  

  The 
  black 
  cherty 
  band 
  at 
  Clarke's 
  Mills 
  mentioned 
  above 
  contains 
  

   Climacograptus 
  parvus, 
  which 
  also 
  is 
  restricted 
  to 
  the 
  

   Normanskill 
  shale. 
  

  

  Black 
  shale, 
  associated 
  in 
  the 
  Willard 
  mountain 
  region 
  with 
  the 
  

   white 
  beds, 
  contains 
  : 
  

  

  Corynoides 
  gracilis 
  Hopkinson 
  

   Didymograptus 
  sagitticaulis 
  Gurley 
  

   Dicranograptus 
  ramosus 
  Hall 
  

   DicellograpUn 
  sextans 
  Hall 
  

   Cryptograptus 
  tricornis 
  (Carruthers) 
  

  

  and 
  the 
  white 
  beds 
  capping 
  this 
  mountain 
  are 
  hence 
  also 
  undoubt- 
  

   edly 
  of 
  Normanskill 
  age. 
  

  

  A 
  good 
  Normanskill 
  fauna 
  was 
  also 
  collected 
  in 
  shales 
  asso- 
  

   ciated 
  with 
  the 
  six-foot 
  bed 
  of 
  chert 
  on 
  the 
  east 
  shore 
  of 
  Saratoga 
  

   lake, 
  namely: 
  

  

  Corynoides 
  gracilis 
  Hopkinson 
  

   Dicranograptus 
  ramosus 
  Hall 
  

  

  iThis 
  locality 
  was 
  pointed 
  out 
  to 
  the 
  writer 
  years 
  ago 
  by 
  Prof. 
  J. 
  B. 
  

   Woodworth. 
  

  

  2 
  The 
  originals 
  of 
  this 
  sponge 
  (described 
  in 
  N. 
  Y. 
  State 
  Mus. 
  Mem. 
  n, 
  

   1908, 
  p. 
  485) 
  came 
  from 
  this 
  locality. 
  

  

  