﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  83 
  

  

  and 
  F 
  4 
  is 
  50 
  feet. 
  The 
  fossiliferous 
  layers 
  extend 
  nearly 
  to 
  the 
  

   highest 
  exposures 
  which 
  are 
  200 
  feet 
  or 
  more 
  above 
  the 
  White 
  

   quarry. 
  The 
  following 
  species 
  were 
  collected 
  in 
  this 
  upper 
  

   zone 
  : 
  

  

  1 
  Clwnetes 
  scitula 
  Hall 
  (r) 
  

  

  2 
  Camarotoechia 
  sp. 
  (rr) 
  

   S 
  Spirifer 
  sp. 
  (rr) 
  

  

  4 
  Palaeoneilo 
  maxima 
  (Con.) 
  Hall 
  (rr) 
  

  

  5 
  Xucula 
  bellis'riata 
  (Con.) 
  Hall 
  var. 
  (rr) 
  

  

  6 
  (?) 
  Tellinopsis 
  subemarginata 
  (Con.) 
  Hall 
  (rr) 
  

  

  7 
  Coleolus 
  sp. 
  (rr) 
  

  

  XXIII 
  X 
  2 
  . 
  On 
  the 
  south 
  side 
  of 
  the 
  Susquehanna 
  river, 
  nearly 
  

   opposite 
  Oneonta, 
  along 
  the 
  Delhi 
  road 
  and 
  a 
  small 
  brook 
  are 
  ex- 
  

   posures 
  of 
  the 
  upper 
  part 
  of 
  the 
  Ithaca 
  formation 
  capped 
  by 
  the 
  

   Oneonta 
  sandstone. 
  At 
  an 
  elevation 
  of 
  about 
  170 
  feet 
  above 
  the 
  

   railroad 
  level 
  on 
  the 
  banks 
  of 
  the 
  small 
  stream 
  are 
  bluish 
  shales 
  

   alternating 
  with 
  thin 
  sandstones. 
  Some 
  of 
  the 
  layers 
  are 
  

   slightly 
  calcareous 
  and 
  contain 
  some 
  fossils, 
  though 
  the 
  number 
  

   of 
  species 
  is 
  small 
  as 
  will 
  be 
  seen 
  by 
  the 
  following 
  list: 
  

  

  1 
  Spirifer 
  mesastrialis 
  Hall 
  . 
  (c) 
  

  

  2 
  S. 
  mncronatus 
  (Con.) 
  Bill. 
  (c) 
  

  

  3 
  Goniophora 
  liamiltonensis 
  (Hall) 
  Miller 
  (?) 
  (rr) 
  

  

  Poorly 
  preserved. 
  

  

  4 
  Edmondia 
  cf. 
  subovata 
  Hall 
  (r) 
  

  

  These 
  specimens 
  resemble 
  fig. 
  21, 
  pi. 
  64, 
  Paleontology 
  of 
  New 
  

   York, 
  v.5, 
  pt 
  1, 
  LamellibrancMata 
  2, 
  which 
  came 
  from 
  

   the 
  Ithaca 
  group 
  at 
  Ithaca 
  and 
  was 
  referred 
  with 
  doubt 
  

   to 
  this 
  species. 
  

  

  5 
  Eomalonotus 
  delcayi 
  (Green) 
  Emm. 
  (rr) 
  

   These 
  rocks 
  belong 
  in 
  the 
  upper 
  part 
  of 
  the 
  Ithaca 
  formation, 
  

  

  which 
  extends 
  somewhat 
  higher. 
  For 
  80 
  feet 
  above 
  X 
  2 
  the 
  rocks 
  

   are 
  mostly 
  covered, 
  when 
  a 
  coarse 
  grained, 
  greenish 
  gray 
  sand- 
  

   stone 
  outcrops 
  by 
  the 
  side 
  of 
  the 
  highway, 
  and 
  in 
  the 
  field 
  to 
  the 
  

   southwest 
  is 
  a 
  small 
  quarry. 
  This 
  stratum— 
  X 
  4 
  — 
  is 
  250 
  feet 
  by 
  

   the 
  barometer 
  above 
  the 
  railroad 
  level 
  and 
  in 
  its 
  lithologic 
  and 
  

   structural 
  characters 
  closely 
  resembles 
  the 
  Oneonta 
  sandstone, 
  

  

  