﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  87 
  

  

  capped 
  by 
  a 
  sandstone 
  which 
  forms 
  the 
  top 
  of 
  the 
  falls 
  in 
  the 
  glen. 
  

  

  The 
  thickness 
  of 
  this 
  entire 
  zone 
  is 
  about 
  30 
  feet. 
  From 
  the 
  dif- 
  

   ferent 
  layers 
  the 
  following 
  species 
  were 
  collected: 
  

  

  1 
  Spirifer 
  mesastrialis 
  Hall 
  (c) 
  

  

  2 
  S. 
  mesacosUUs 
  Hall 
  (?) 
  (c) 
  

  

  3 
  Camarotoechia 
  eximia 
  (Hall) 
  H. 
  & 
  C. 
  (c) 
  

  

  4 
  Paracijclas 
  lirata 
  (Con.) 
  Hall 
  (rr) 
  

  

  5 
  Prothyris 
  lanceolata 
  Hall 
  (rr) 
  

  

  6 
  Modiomorpha 
  concewtrica 
  (Con.) 
  Hall 
  (rr) 
  

  

  7 
  Nuculites 
  oUongatus 
  Con. 
  (r) 
  

  

  8 
  N. 
  cimeiformis 
  Con. 
  (rr) 
  

  

  9 
  Microdon 
  (Cypricardella) 
  tenuistriatus 
  Hall 
  m 
  (rr) 
  

  

  10 
  Coleolus 
  sp. 
  (rr) 
  

  

  11 
  Fish 
  plates 
  and 
  teeth 
  (r) 
  

   LXXI 
  C 
  3 
  '. 
  From 
  the 
  top 
  of 
  the 
  falls 
  to 
  the 
  top 
  of 
  the 
  cliff 
  there 
  

  

  are 
  50 
  feet 
  of 
  alternating 
  shaly 
  and 
  thin 
  sandstone 
  layers. 
  These 
  

   rocks 
  contain 
  some 
  fossils, 
  though 
  the 
  number 
  of 
  specimens 
  and 
  

   species 
  is 
  smaller 
  than 
  in 
  those 
  of 
  C 
  2 
  . 
  The 
  species 
  listed 
  below 
  

   were 
  obtained: 
  

  

  1 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Hall 
  (r) 
  

  

  2 
  Spirifer 
  sp. 
  (r) 
  

  

  3 
  Camarotoechia 
  sp. 
  (rr) 
  

  

  4 
  Paracyclas 
  lirata 
  (Con.) 
  Hall 
  (c) 
  

  

  5 
  'Nuculites 
  oblongatus 
  Con. 
  (?) 
  (rr) 
  

  

  6 
  Actinopteria 
  sp. 
  (rr) 
  

  

  7 
  Coleolus 
  sp. 
  (rr) 
  

  

  8 
  Crinoid 
  segments 
  (c) 
  

   The 
  top 
  of 
  these 
  rocks 
  is 
  approximately 
  155 
  feet 
  above 
  railroad 
  

  

  level 
  to 
  the 
  east 
  of 
  Otego 
  and 
  the 
  three 
  zones 
  belong 
  in 
  the 
  Ithaca 
  

   formation. 
  

  

  LXXI 
  B\ 
  On 
  the 
  northern 
  bank 
  of 
  the 
  Susquehanna 
  river 
  about 
  

   one 
  mile 
  east 
  of 
  Otego 
  is 
  a 
  cliff 
  of 
  shales 
  and 
  sandstones 
  some 
  20 
  

   feet 
  in 
  hight. 
  The 
  base 
  reaches 
  water 
  level 
  and 
  for 
  10 
  feet 
  is 
  com- 
  

   posed 
  of 
  bluish 
  shales 
  with 
  thin, 
  slightly 
  calcareous, 
  concretionary 
  

   layers. 
  Then 
  quite 
  a 
  heavy 
  sandstone 
  stratum 
  occurs 
  with 
  quite 
  

   arenaceous 
  shales 
  and 
  above 
  this 
  a 
  sandstone 
  stratum 
  a 
  foot 
  or 
  

  

  