﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  85 
  

  

  West 
  Oneonta. 
  XXIII 
  E 
  1 
  . 
  The 
  western 
  part 
  of 
  Oneonta 
  town- 
  

   ship 
  is 
  crossed 
  by 
  the 
  Otego 
  creek 
  and 
  one 
  of 
  its 
  western 
  "branches 
  

   is 
  Perry 
  brook 
  which 
  flows 
  through 
  the 
  small 
  village 
  of 
  West 
  

   Oneonta. 
  About 
  one 
  fourth 
  mile 
  above 
  West 
  Oneonta 
  is 
  an 
  old 
  

   mill 
  and 
  along 
  the 
  banks 
  of 
  the 
  creek 
  below 
  and 
  above 
  the 
  mill 
  

   are 
  very 
  fossiliferous, 
  bluish, 
  argillaceous 
  shales. 
  Loose 
  in 
  the 
  

   brook 
  are 
  large 
  slabs 
  of 
  sandstone 
  containing 
  numerous 
  large 
  

   and 
  nicely 
  preserved 
  specimens 
  of 
  Spirifer 
  mesastrialis 
  Hall. 
  The 
  

   rocks 
  along 
  the 
  creek 
  show 
  a 
  decided 
  dip 
  to 
  the 
  southwest. 
  The 
  

   base 
  of 
  these 
  shales 
  is 
  about 
  105 
  feet 
  higher 
  than 
  the 
  bridge 
  over 
  

   the 
  Otego 
  creek 
  at 
  West 
  Oneonta, 
  approximately 
  130 
  feet 
  above 
  

   the 
  base 
  of 
  the 
  Powell 
  hill 
  section 
  at 
  Oneonta, 
  and 
  three 
  miles 
  

   northwest 
  of 
  the 
  base 
  of 
  that 
  section. 
  The 
  fauna 
  is: 
  

  

  1 
  Spirifer 
  mesastrialis 
  Hall 
  (c) 
  

  

  2 
  $. 
  mucronatus 
  (Con.) 
  Bill. 
  (rr) 
  

  

  3 
  S. 
  mesacostalis 
  Hall 
  (?) 
  (rr) 
  

  

  4 
  Camarotoechia 
  eximia 
  (Hall) 
  H. 
  & 
  O. 
  (c) 
  

  

  5 
  C. 
  Steven 
  si 
  (Hall) 
  H. 
  & 
  C. 
  (c) 
  

  

  6 
  Chonetcs 
  scitula 
  Hall 
  (r) 
  

  

  7 
  C. 
  setigera 
  Hall 
  (c) 
  

  

  8 
  Orbiculoidea 
  neglecta 
  (Hall) 
  H. 
  & 
  C. 
  (?) 
  " 
  (rr) 
  

  

  9 
  Paracyclas 
  lirata 
  (Con.) 
  Hall 
  (a) 
  

  

  10 
  Protliyris 
  lanceolate 
  Hall 
  (rr) 
  

  

  11 
  Microdon 
  (Cypricardella) 
  tenuistriatus 
  Hall 
  (rr) 
  

  

  12 
  PaJaeoneilo 
  maxima 
  (Con.) 
  Hall 
  (rr) 
  

  

  13 
  Modiomorpha 
  subal'ata 
  (Con.) 
  Hall 
  (r) 
  

  

  var. 
  chemungensis 
  Hall 
  

   The 
  large 
  and 
  elongate 
  form 
  found 
  in 
  the 
  east. 
  

  

  14 
  Modiomorpha 
  cf. 
  mytiloides 
  (Con.) 
  Hall 
  (rr) 
  

  

  This 
  is 
  a 
  small 
  specimen 
  resembling 
  in 
  some 
  respects 
  M. 
  

   alta 
  iCon.) 
  Hall 
  as 
  fully 
  as 
  the 
  above 
  species. 
  

  

  15 
  Grammysia 
  elliptica 
  Hall 
  (rr) 
  

  

  16 
  G. 
  nodocostata 
  Hall 
  (rr) 
  

  

  The 
  impressions 
  show 
  nodose 
  ridges 
  near 
  the 
  umbo 
  similar 
  

   to 
  figures 
  of 
  this 
  species. 
  

  

  17 
  Grammysia 
  constricta 
  Hall 
  (rr) 
  

  

  18 
  Goniophora 
  sp. 
  (rr) 
  

  

  