﻿STRATIGRAPHIC 
  GEOLOGY 
  OF 
  THE 
  EASTERN 
  HELDERBERGS 
  341 
  

  

  Hudson, 
  Columbia 
  co. 
  G 
  This 
  limestone 
  forms 
  a 
  conspicuous 
  

   ledge 
  near 
  the 
  house 
  of 
  Mr 
  Parrish, 
  the 
  top 
  of 
  the 
  shaly 
  limestone 
  

   being 
  shown 
  in 
  the 
  spring 
  below 
  the 
  house. 
  The 
  top 
  of 
  the 
  

   limestone 
  is 
  bare 
  for 
  some 
  distance 
  and 
  numerous 
  joints 
  are 
  

   nicely 
  shown. 
  This 
  is 
  a 
  good 
  locality 
  for 
  collecting 
  and 
  the 
  

   following 
  list 
  was 
  obtained 
  in 
  that 
  vicinity: 
  

  

  1 
  Splrlfer 
  cominnus 
  Hall 
  (a) 
  

  

  2 
  Sieberella 
  pseudogaleata 
  (Hall) 
  H. 
  & 
  C=Pentamerus 
  pseu- 
  

  

  dogaleatus 
  Hall 
  (a) 
  

  

  3 
  At 
  ry 
  pa 
  reticularis 
  (Linn.) 
  Dal. 
  (a) 
  

  

  4 
  Wilsonia 
  ventricosa 
  (Hall) 
  H. 
  & 
  C=Rliynchonella 
  veriiri- 
  

  

  cosa 
  Hall 
  ' 
  (r) 
  

  

  5 
  Khynchonella 
  (Unciniilus) 
  nobilis 
  Hall 
  (c) 
  

  

  6 
  R. 
  (U. 
  ) 
  campbelUna 
  Hall 
  (r) 
  

  

  7 
  Orthis 
  (Schizophoria) 
  multlstriata 
  Hall 
  (c) 
  

  

  8 
  0. 
  {RMpidomella) 
  oblata 
  Hall 
  (r) 
  

  

  9 
  Spirifer 
  cyclopterus 
  Hall 
  (?) 
  (r) 
  

  

  10 
  Leptaena 
  rhomboid 
  'alls 
  (Wilckens) 
  H. 
  & 
  C. 
  (r) 
  

  

  11 
  Orthothetes 
  cf. 
  woolworthana 
  (Hall) 
  H. 
  & 
  C. 
  (r) 
  

  

  12 
  Aspidiocrinus 
  scutelUformis 
  Hall 
  (a) 
  

  

  13 
  LichenaUa 
  torta 
  Hall 
  (r) 
  

  

  14 
  Streptelasma 
  striatum 
  Hall 
  (r) 
  

  

  15 
  Favosites 
  sphaericus 
  Hall 
  (r) 
  

  

  16 
  Bryozoa 
  sp. 
  

  

  Oriskany 
  sandstone. 
  This 
  sandstone 
  is 
  well 
  exposed 
  back 
  of 
  

   Mr 
  Parrish's 
  house 
  where 
  it 
  rests 
  directly 
  on 
  top 
  of 
  the 
  massive 
  

   Becraft 
  limestone. 
  The 
  section 
  differs 
  in 
  this 
  respect 
  from 
  those 
  

   on 
  West 
  mountain 
  west 
  of 
  Schoharie 
  where 
  an 
  upper 
  shaly 
  lime- 
  

   stone 
  occurs 
  between 
  the 
  Becraft 
  limestone 
  and 
  Oriskany 
  sand- 
  

   stone. 
  The 
  Oriskany 
  sandstone 
  on 
  Countryman 
  hill 
  is 
  very 
  fos- 
  

   siliferous, 
  the 
  following 
  species 
  having 
  been 
  collected 
  from 
  the 
  

   ledge 
  just 
  west 
  of 
  the 
  Parrish 
  house: 
  

  

  1 
  Spirifer 
  arcnosus 
  (Con.) 
  Hall 
  (a) 
  

  

  2 
  S. 
  a 
  r 
  rectus 
  Hall 
  (a) 
  

  

  3 
  S. 
  pyxidatus 
  Hall 
  (r) 
  

  

  Gl3th 
  an. 
  rep't 
  N. 
  V. 
  state 
  geologist, 
  p. 
  212r 
  

  

  