﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  303 
  

  

  Red 
  shales 
  and 
  sandstones 
  outcrop 
  conspicuously 
  in 
  the 
  Beer- 
  

   kill 
  and 
  on 
  the 
  highway 
  a 
  short 
  distance 
  above 
  the 
  fork 
  of 
  the 
  

   creek 
  to 
  the 
  northwest 
  of 
  Ellenville. 
  Along 
  the 
  creek 
  below 
  

   and 
  under 
  the 
  bridge 
  over 
  the 
  western 
  fork 
  the 
  red 
  rocks 
  are 
  

   very 
  prominent 
  and 
  this 
  locality 
  is 
  near 
  the 
  line 
  representing 
  

   the 
  base 
  of 
  the 
  Catskill 
  formation 
  on 
  the 
  Geologic 
  map 
  of 
  New 
  

   York. 
  The 
  older 
  Devonian 
  formations 
  are 
  not 
  shown 
  to 
  any 
  ex- 
  

   tent 
  in 
  the 
  vicinity 
  of 
  Ellenville. 
  The 
  dip 
  is 
  20°N, 
  50°W. 
  At 
  

   various 
  places 
  along 
  the 
  highway 
  from 
  Ellenville 
  to 
  Homowack 
  

   are 
  exposures 
  of 
  Hamilton 
  shales 
  and 
  sandstones, 
  the 
  latter 
  oc- 
  

   curing 
  more 
  frequently. 
  Against 
  the 
  eastern 
  foot 
  of 
  the 
  hill 
  

   just 
  north 
  of 
  Homowack 
  is 
  a 
  big 
  sand 
  and 
  gravel 
  bank 
  below 
  

   which 
  is 
  an 
  outcrop 
  of 
  Hamilton 
  shales. 
  These 
  shales 
  are 
  bluish, 
  

   not 
  very 
  arenaceous 
  and 
  break 
  into 
  blocky 
  pieces. 
  Only 
  a 
  few 
  

   fragments 
  of 
  fossils 
  were 
  found. 
  A 
  little 
  farther 
  up 
  the 
  highway 
  

   on 
  the 
  south 
  side 
  of 
  Sandberg 
  creek 
  are 
  bluish 
  Hamilton 
  shales 
  

   which 
  split 
  into 
  thinner 
  layers 
  than 
  those 
  first 
  noted. 
  The 
  dip 
  

   varies 
  from 
  42° 
  to 
  45°N, 
  50°W. 
  Fossils, 
  specially 
  Lamelli- 
  

   branchs 
  are 
  more 
  common 
  than 
  in 
  the 
  lower 
  shales, 
  being 
  abund- 
  

   ant 
  in 
  some 
  of 
  the 
  coarser 
  layers. 
  This 
  is 
  the 
  best 
  locality 
  for 
  

   collecting 
  noted 
  between 
  Kerhonkson 
  and 
  Homowack, 
  the 
  follow- 
  

   ing 
  species 
  having 
  been 
  obtained: 
  

  

  1 
  Nyassa 
  arguta 
  Hall 
  (a) 
  

  

  2 
  Palaeoneilo 
  emarginata 
  (Con.) 
  Hall 
  (c) 
  

  

  3 
  P. 
  constricta 
  (Con.) 
  Hall 
  (r) 
  

  

  4 
  Gramnvysia 
  constricta 
  Hall 
  - 
  (rr) 
  

  

  5 
  G. 
  alveata 
  (Con.) 
  Hall 
  (c) 
  

  

  6 
  Gimitaria 
  elongata 
  (Con.) 
  Hall 
  (rr) 
  

  

  7 
  Glyptodesma 
  erectum 
  (Con.) 
  Hall 
  (rr) 
  

  

  8 
  Pterinea 
  flaoella 
  (Con.) 
  Hall 
  (c) 
  

  

  9 
  Nucula 
  corbuliformis 
  Hall 
  (rr) 
  

  

  10 
  Nuculites 
  triqueter 
  Con. 
  (c) 
  

  

  11 
  Goniophora 
  hamiltonensis 
  Hall 
  (r) 
  

  

  12 
  Liopteria 
  dekayi 
  Hall 
  (r) 
  

  

  13 
  Gamarotoechia 
  congregata 
  (Con.) 
  H. 
  & 
  C. 
  (c) 
  

  

  14 
  Tcntaculites 
  beUulus 
  Hall 
  (rr) 
  

  

  15 
  Bellerophon 
  sp. 
  (rr) 
  

  

  