﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  255 
  

  

  Stewart 
  flagstone 
  quarry 
  from 
  which 
  a 
  large- 
  amount 
  of 
  flagging 
  

   has 
  been 
  shipped. 
  There 
  is 
  from 
  four 
  and 
  a 
  half 
  to 
  six 
  feet 
  of 
  

   good 
  flagging 
  stone 
  that 
  splits 
  into 
  layers, 
  three, 
  four 
  and 
  eight 
  

   inches 
  in 
  thickness 
  covered 
  by 
  11 
  feet 
  of 
  stripping 
  composed 
  of 
  

   shale 
  and 
  soil. 
  The 
  blue 
  argillaceous 
  shales 
  on 
  top 
  of 
  the 
  flag- 
  

   ging 
  stone 
  contain 
  an 
  abundant 
  Hamilton 
  fauna 
  and 
  the 
  rocks 
  

   belong 
  in 
  the 
  upper 
  part 
  of 
  that 
  formation. 
  The 
  following 
  

   species 
  were 
  collected: 
  

  

  1 
  Spirifer 
  granulosus 
  (Con.) 
  H. 
  & 
  C. 
  (c) 
  

  

  2 
  S. 
  mucronatiis 
  (Con.) 
  Bill. 
  (r) 
  

  

  3 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Hall 
  (c) 
  

  

  4 
  Camarotoechia 
  prolifica 
  (Hall) 
  H. 
  & 
  C. 
  (rr) 
  

  

  5 
  Oriliis 
  (Rhipidomella) 
  vanuxemi 
  Hall 
  (?) 
  (rr) 
  

  

  Internal 
  impression 
  poorly 
  preserved. 
  

  

  6 
  Oriliothetes 
  chemungensis 
  (Con.) 
  H. 
  & 
  C. 
  

  

  var. 
  arctostriata 
  Hall 
  (rr) 
  

  

  7 
  Productella 
  dumosa 
  Hall 
  (r) 
  

  

  8 
  (?) 
  Orbiculoidea 
  sp. 
  (r) 
  

  

  9 
  Orthonota 
  (?) 
  parvula 
  Hall 
  (rr) 
  

  

  10 
  Niicula 
  corbuliformis 
  Hall 
  (c) 
  

  

  11 
  N. 
  Taricosa 
  Hall 
  (rr) 
  

  

  12 
  Palaeoneilo 
  perplana 
  Hall 
  (rr) 
  

  

  13 
  Grammysia 
  circularis 
  Hall 
  (r) 
  

  

  14 
  G. 
  lirata 
  Hall 
  i 
  (rr) 
  

  

  15 
  JlodiomorpJia 
  subalata 
  (Con.) 
  Hall 
  (?) 
  (rr) 
  

  

  16 
  Ganiophora 
  hamiltonensis 
  (Hall) 
  Miller 
  (rr) 
  

  

  17 
  Glyptodesma 
  erectum 
  (Con.) 
  Hall 
  (r) 
  

  

  18 
  Aviculopecten 
  fasciculatus 
  Hall 
  (?) 
  (c) 
  

  

  19 
  Actinopteria 
  boydi 
  (Con.) 
  Hall 
  * 
  (rr) 
  

  

  20 
  Bellerophon 
  brevilineatus 
  Con. 
  (rr) 
  

  

  21 
  B. 
  thalia 
  Hall 
  (rr) 
  

   This 
  quarry 
  is 
  nearly 
  two 
  and 
  a 
  half 
  miles 
  southwest 
  of 
  the 
  

  

  Agrippa 
  quarry 
  on 
  the 
  hill 
  east 
  of 
  South 
  Berne 
  and 
  the 
  dip 
  is 
  

   about 
  LJ° 
  S 
  35° 
  E. 
  The 
  accompanying 
  picture 
  serves 
  as 
  

   a 
  fair 
  illustration 
  of 
  the 
  flagstone 
  quarries 
  in 
  the 
  upper 
  Hamilton 
  

   of 
  Albany 
  county 
  and 
  gives 
  a 
  clear 
  idea 
  of 
  the 
  one 
  just 
  described. 
  

  

  