﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  20& 
  

  

  18 
  Goniopliora 
  hamiltonensis 
  (Hall) 
  Miller 
  (c) 
  

  

  Imperfectly 
  preserved. 
  

  

  19 
  G. 
  rugosa 
  (Con.) 
  Miller 
  (rr) 
  

  

  20 
  Nuculites 
  triqueter 
  Con. 
  (rr) 
  

  

  21 
  N. 
  oblongatus 
  Con. 
  (rr) 
  

  

  22 
  Grammysia 
  suharcuata 
  Hall 
  (rr)- 
  

  

  23 
  G. 
  arcuata 
  (Con.) 
  Hall 
  (rr) 
  

  

  24 
  G. 
  globosa 
  Hall 
  (rr) 
  

  

  25 
  Actinopteria 
  boydi 
  (Con.) 
  Hall 
  (rr) 
  

  

  26 
  A. 
  decussata 
  Hall 
  (rr) 
  

  

  27 
  Bellerophon 
  acutilira 
  Hall 
  (r) 
  

  

  Crushed 
  and 
  imperfectly 
  preserved. 
  

  

  28 
  Coleolus 
  tenuicinctum 
  Hall 
  (rr) 
  

  

  29 
  Phacops 
  rana 
  (Green) 
  Hall 
  (rr) 
  

  

  30 
  Dalmanites 
  (Cryplieus) 
  boothi 
  (Green) 
  Hall 
  (r) 
  

  

  31 
  Ortliis 
  (RJiipidomella) 
  vanuxemi 
  Hall 
  (?) 
  (rr) 
  

  

  32 
  OrtJwthetes 
  cTiemungensis 
  (Con.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  33 
  Chonetes 
  lepida 
  Hall 
  (r) 
  

  

  34 
  Solen 
  (Palaeosolen) 
  siliquoidea 
  Hall 
  (rr) 
  

  

  35 
  Mlcrodon 
  (Cypricardella) 
  bellistriatus 
  Con. 
  (?) 
  (rr) 
  

  

  Imperfectly 
  preserved. 
  

  

  36 
  M. 
  (Cypricardella) 
  tenuistriatus 
  Hall 
  (c) 
  

  

  37 
  Macrodon 
  liamiltoniae 
  Hall 
  (rr) 
  

  

  38 
  'Cimitaria 
  recurva 
  (Con.) 
  Hall 
  (rr) 
  

  

  39 
  Hyolithes 
  aclis 
  Hall 
  (rr> 
  

  

  40 
  Leda 
  di 
  versa 
  Hail 
  (rr) 
  

  

  41 
  Cyrtolites 
  {Cyrtonella) 
  pileolus 
  Hall 
  (rr) 
  

  

  42 
  Pleurotomaria 
  rotalia 
  Hall 
  (rr) 
  

  

  XXVIII 
  H 
  5 
  . 
  Succeeding 
  these 
  f 
  ossiliferous 
  shales 
  for 
  85 
  feet 
  the 
  

   rocks 
  are 
  partly 
  covered; 
  but 
  there 
  are 
  not 
  infrequent 
  exposures 
  of 
  

   blue 
  shales. 
  Fossils 
  were 
  not 
  found. 
  The 
  examination 
  was 
  hastily 
  

   made 
  and 
  the 
  shales 
  are 
  undoubtedly 
  fossiliferous 
  as 
  are 
  those 
  

   of 
  the 
  same 
  general 
  horizon 
  in 
  XXVIII 
  D 
  4 
  which 
  contain 
  speci- 
  

   ments 
  of 
  Spirifer 
  mesastrialis 
  Hall. 
  These 
  blue 
  shales 
  show 
  

   within 
  10 
  or 
  15 
  feet 
  of 
  the 
  base 
  ledges 
  of 
  coarse 
  grained, 
  irreg- 
  

   ular, 
  thin 
  bedded, 
  grayish 
  to 
  greenish 
  gray 
  sandstone 
  (H 
  6 
  ) 
  which 
  

  

  