﻿UNIVERSITY 
  OF 
  THE 
  STATE 
  OF 
  NEW 
  YORK. 
  

  

  STATE 
  MUSEUM 
  BULLETIN 
  No. 
  19. 
  

  

  f 
  

  

  

  i 
  ' 
  

  

  ; 
  1 
  

  

  LEGEND 
  

   1 
  1 
  CRETACEOUS 
  TERTIARY 
  

   1 
  1 
  TRIASSIC^ 
  

  

  QUATERNARY 
  

  

  

  1 
  1 
  DEVONIAN. 
  

  

  ^' 
  

  

  

  

  z 
  

  

  1 
  1 
  UPPER 
  SILURIAN. 
  

  

  ^ 
  

  

  

  1 
  1 
  LOWERSILURIAN 
  

  

  ' 
  ^ 
  A*^ 
  MM 
  

  

  

  

  ^ 
  ■ 
  **■ 
  ' 
  * 
  kM 
  

  

  1 
  1 
  CAMBRIAN. 
  

  

  

  M^H 
  

  

  

  

  

  1 
  1 
  ARCHAEAN. 
  Q 
  

  

  

  ''^.^ 
  1 
  

  

  :z:r::::'Z''''°°"''" 
  ^ 
  

  

  

  

  

  