﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  143 
  

  

  Worcester 
  are 
  blue 
  shales 
  containing 
  the 
  Ithaca 
  fauna, 
  Spirifer 
  

   mesastrialis 
  Hall 
  being 
  common, 
  and 
  the 
  upper 
  part 
  of 
  this 
  hill 
  

   belongs 
  in 
  that 
  formation. 
  The 
  following 
  species 
  were 
  collected: 
  

  

  1 
  Spirifer 
  mesastrialis 
  Hall 
  (r) 
  

  

  2 
  Palaeoneilo 
  emarginata 
  (Con.) 
  Hall 
  (?) 
  (rr) 
  

  

  3 
  Microdon 
  (Cyprioardella) 
  gregarius 
  Hall 
  (c) 
  

  

  4 
  (?) 
  Modiomorpha 
  sp. 
  (rr) 
  

  

  XXVI 
  A 
  2 
  . 
  Circumstances 
  did 
  not 
  permit 
  a 
  careful 
  examination 
  

   for 
  fossils 
  in 
  the 
  rocks 
  along 
  the 
  highway 
  down 
  into 
  the 
  valley; 
  

   but 
  some 
  390 
  feet 
  lower 
  than 
  the 
  horizon 
  containing 
  the 
  Ithaca 
  

   fossils 
  are 
  coarse, 
  bluish, 
  arenaceous 
  shales 
  with 
  an 
  abundant 
  

   Hamilton 
  fauna. 
  The 
  Hamilton 
  rocks 
  extend 
  above 
  the 
  high- 
  

   way 
  corners 
  where 
  one 
  road 
  turns 
  to 
  the 
  southwest 
  and 
  crosses 
  

   Schenevus 
  creek 
  nearly 
  two 
  miles 
  below 
  the 
  village. 
  It 
  was 
  not 
  

  

  determined 
  whether 
  this 
  zone 
  was 
  about 
  at 
  the 
  top 
  of 
  the 
  Hamil- 
  

  

  « 
  

  

  ton 
  or 
  not 
  but 
  it 
  is 
  certain 
  that 
  there 
  are 
  over 
  400 
  feet 
  of 
  Hamil- 
  

   ton 
  rocks 
  in 
  the 
  steep 
  hill 
  south 
  of 
  Schenevus 
  creek 
  at 
  Worcester. 
  

   In 
  the 
  few 
  minutes 
  spent 
  in 
  collecting 
  at 
  A 
  2 
  the 
  following 
  species 
  

   were 
  obtained: 
  

  

  1 
  Spirifer 
  mucronatus 
  (Con.) 
  Bill. 
  (r) 
  

  

  2 
  S. 
  granosus 
  (Con.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  3 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Bill. 
  (a) 
  

  

  4 
  Athyris 
  spiriferoides 
  (Eaton) 
  Hall 
  (rr) 
  

  

  5 
  Craniella 
  hamiltoniae 
  (Hall) 
  H. 
  & 
  C. 
  (?) 
  (rr) 
  

  

  6 
  Nucula 
  bellastriata 
  (Con.) 
  Hall 
  (c) 
  

  

  7 
  Palaeoneilo 
  constricta 
  (Con.) 
  Hall 
  (rr) 
  

  

  8 
  P. 
  maxima 
  (Con.) 
  Hall 
  (rr) 
  

  

  That 
  there 
  was 
  not 
  the 
  opportunity 
  to 
  make 
  a 
  thorough 
  col- 
  

   lection 
  from 
  the 
  Hamilton 
  rocks 
  of 
  this 
  hillside 
  is 
  a 
  matter 
  of 
  

   regret 
  for 
  it 
  is 
  apparently 
  an 
  excellent 
  locality 
  at 
  which 
  to 
  obtain 
  

   a 
  characteristic 
  fauna 
  of 
  the 
  upper 
  part 
  of 
  this 
  formation. 
  The 
  

   general 
  outline 
  of 
  the 
  section 
  may 
  be 
  represented 
  by 
  the 
  follow- 
  

   ing 
  diagram: 
  

  

  