﻿242 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  10 
  Palaeoneilo 
  constricta 
  (Con.) 
  Hall 
  (r) 
  

  

  11 
  NucuUtes 
  triqueter 
  Con. 
  ■ 
  (rr) 
  

  

  12 
  Tellmopsis 
  subemarginata 
  (Con.) 
  Hall 
  (rr) 
  

  

  13 
  Sphmotus 
  truncatus 
  (Con.) 
  Hall 
  (r) 
  

  

  14 
  Orthonota 
  undulata 
  Con. 
  (r) 
  

  

  15 
  Goniophora 
  hamiltonensis 
  (Hall) 
  Miller 
  (r) 
  

  

  16 
  Cimitaria 
  elongata 
  (Con.) 
  Hall 
  (rr) 
  

  

  17 
  Modiomorpha 
  subalata 
  (Con.) 
  Hall 
  i 
  (rr) 
  

  

  18 
  Elymella 
  levata 
  Hall 
  (rr) 
  

  

  19 
  Microdon 
  (Cypricardella) 
  tenuisiriatus 
  Hall 
  (rr) 
  

  

  20 
  Actinopteria 
  boydi 
  (Con.) 
  Hall 
  (c) 
  

  

  21 
  Liopteria 
  dekayi 
  Hall 
  (c) 
  

  

  22 
  Pterinpecten 
  vertumnus 
  Hall 
  (c) 
  

  

  23 
  Homalonotus 
  dekayi 
  (Green) 
  Emm. 
  (rr) 
  

  

  24 
  Taeniopora 
  exigua 
  Nicholson 
  (c) 
  

  

  25 
  Lingula 
  sp. 
  (rr) 
  

  

  Broken 
  specimens 
  

  

  26 
  Nucula 
  corbuliformis 
  Hall 
  (rr) 
  

  

  40 
  feet 
  above 
  the 
  base 
  of 
  zone 
  B 
  4 
  are 
  greenish 
  and 
  bluish 
  

   argillaceous 
  shales 
  (B 
  5 
  ), 
  the 
  interval 
  between 
  the 
  two 
  zones 
  being 
  

   partly 
  covered. 
  The 
  greenish 
  to 
  olive 
  shales 
  in 
  lithologic 
  appear- 
  

   ance 
  resemble 
  the 
  shales 
  of 
  the 
  Sherburne 
  formation, 
  but 
  they 
  

   alternate 
  with 
  bluish, 
  slightly 
  sandy 
  shales 
  which 
  contain 
  oc- 
  

   casional 
  fossils. 
  One 
  stratum 
  of 
  sandstone 
  four 
  to 
  five 
  inches 
  

   in 
  thickness 
  contains 
  a 
  large 
  number 
  of 
  clay 
  pebbles. 
  

  

  Above 
  this 
  zone 
  the 
  rocks 
  are 
  again 
  concealed 
  for 
  nearly 
  50 
  

   feet 
  when 
  there 
  is 
  another 
  outcrop 
  of 
  bluish 
  to 
  greenish 
  argil- 
  

   laceous 
  shales 
  (B 
  6 
  ) 
  by 
  the 
  road 
  side. 
  The 
  bluish 
  shales 
  contain 
  

   quite 
  a 
  good 
  many 
  specimens 
  of 
  small 
  Hamilton 
  lamellibranchs 
  

   as 
  will 
  be 
  seen 
  from 
  the 
  accompanying 
  list. 
  In 
  one 
  thin 
  layer 
  

   near 
  the 
  base 
  of 
  the 
  zone 
  they 
  are 
  specially 
  common 
  while 
  a 
  

   little 
  higher 
  is 
  a 
  thin 
  layer 
  of 
  calcareous 
  shell 
  rock 
  in 
  which 
  are 
  

   numerous 
  specimens 
  of 
  Camarotoechia. 
  The 
  fauna 
  is: 
  

  

  1 
  Atrypa 
  reticularis 
  (Lin.) 
  Dal. 
  (c) 
  

  

  2 
  Spirifer 
  mucronatus 
  (Con.) 
  Bill. 
  (rr) 
  

  

  