﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  103 
  

  

  the 
  brook 
  with 
  some 
  bluish 
  arenaceous 
  shales 
  at 
  the 
  base. 
  In 
  

   the 
  sandstone 
  is 
  an 
  irregular 
  concretionary 
  layer 
  and 
  the 
  thick- 
  

   ness 
  of 
  the 
  rocks 
  exposed 
  at 
  this 
  locality 
  is 
  10 
  feet. 
  No 
  fossils 
  

   were 
  found. 
  

  

  LXX 
  A 
  5 
  . 
  Along 
  the 
  main 
  brook 
  no 
  further 
  outcrops 
  were 
  found 
  

   above 
  A 
  3 
  for 
  the 
  valley 
  seems 
  to 
  be 
  quite 
  deeply 
  covered 
  with 
  

   drift; 
  but 
  in 
  a 
  small 
  run 
  from 
  the 
  west 
  and 
  nearly 
  west 
  of 
  a 
  red 
  

   schoolhouse 
  are 
  outcrops 
  of 
  shales 
  and 
  sandstones. 
  The 
  base 
  of 
  

   this 
  zone 
  is 
  115 
  feet 
  above 
  the 
  top 
  of 
  A 
  3 
  and 
  for 
  95 
  feet 
  there 
  is 
  a 
  

   nearly 
  continuous 
  rock 
  section 
  consisting 
  mainly 
  of 
  thin 
  bedded 
  

   sandstones 
  in 
  layers 
  six 
  inches 
  or 
  more 
  in 
  thickness 
  with 
  some 
  

   layers 
  of 
  irregular 
  structure 
  and 
  arenaceous 
  shales. 
  In 
  the 
  

   upper 
  part 
  are 
  greenish 
  to 
  bluish 
  shales 
  that 
  are 
  more 
  argil- 
  

   laceous 
  in 
  character 
  and 
  there 
  are 
  occasionally 
  thin, 
  rather 
  

   strongly 
  calcareous, 
  abundantly 
  fossiliferous 
  layers 
  in 
  one 
  of 
  

   which 
  BelleropJion 
  maera 
  Hall 
  is 
  common. 
  The 
  following 
  species 
  

   were 
  obtained 
  at 
  this 
  locality: 
  

  

  1 
  Liorhynchus 
  globuliformis 
  (Van.) 
  Hall 
  (r) 
  

  

  2 
  Bellerophon 
  maera 
  Hall 
  i 
  (c) 
  

  

  Common 
  in 
  some 
  very 
  calcareous 
  layers. 
  

  

  3 
  Grammysia 
  sp. 
  (r) 
  

  

  4 
  Palaeoneilo 
  brevis 
  Hall 
  (r) 
  

  

  5 
  P. 
  plana 
  Hall 
  (rr) 
  

  

  6 
  HodiomorpJia 
  quadrula 
  Hall 
  (rr) 
  

  

  7 
  Leda 
  brevirostris 
  Hall 
  (rr) 
  

  

  8 
  Leptodesma 
  sociale 
  Hall 
  (r) 
  

  

  For 
  110 
  feet 
  from 
  the 
  top 
  of 
  A 
  5 
  nearly 
  to 
  the 
  top 
  of 
  the 
  hill 
  

   the 
  rocks 
  are 
  covered 
  by 
  drift 
  and 
  soil 
  and 
  no 
  higher 
  outcrops 
  

   were 
  found 
  at 
  this 
  locality. 
  The 
  section 
  may 
  be 
  represented 
  

   diagrammatically 
  as 
  follows: 
  

  

  