﻿74 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  14 
  Orthonota 
  undulata 
  Con. 
  

  

  15 
  Tellvnopsis 
  subemarginata 
  (Con.) 
  Hall 
  (rr) 
  

   i6 
  Modiomorplia 
  mytiloides 
  (Con.) 
  Hall 
  (rr) 
  

  

  17 
  Mr 
  concentrioa 
  (Con.) 
  Hall 
  

  

  18 
  Leptodesma 
  rogersi 
  Hall 
  (r) 
  

  

  19 
  Liopteria 
  dekayi 
  Hall 
  (rr) 
  

  

  20 
  Glyptodesma 
  erectum 
  (Con.) 
  Hall 
  (rr) 
  

  

  21 
  Coleolus 
  tenuicinctum 
  Hall 
  (c) 
  

  

  22 
  Tentaoulites 
  attenuatus 
  Hall 
  (?) 
  (r) 
  

  

  23 
  Pleurotomaria 
  sulcomarginata 
  Con. 
  (c) 
  

  

  24 
  Microdon 
  (^Cypricar 
  delta) 
  bellistriata 
  (Con.) 
  Hall 
  

  

  25 
  M. 
  (Cypricardella) 
  gregarius 
  Hail 
  

  

  26 
  Grammysia 
  magna 
  Hall 
  

  

  27 
  G. 
  nodocostata 
  Hall 
  

  

  28 
  Cimitaria 
  recurva 
  (Con.) 
  Hall 
  (?) 
  

  

  29 
  Goniophora 
  carinata 
  (Con.) 
  Hall 
  

  

  30 
  Homalonotus 
  dekayi 
  (Green) 
  Emm. 
  

  

  31 
  'Nuculites 
  triqueter 
  Con. 
  

  

  32 
  Rhodea 
  pinna 
  ta 
  Dn. 
  (?) 
  

  

  The 
  majority 
  of 
  the 
  32 
  species 
  in 
  the 
  above 
  list 
  occur 
  in 
  the 
  

   Hamilton 
  formation, 
  but 
  the 
  presence 
  of 
  Spirifer 
  mesastrialis 
  

   Hall 
  and 
  a 
  few 
  other 
  species 
  shows 
  that 
  this 
  fauna 
  belongs 
  in 
  the 
  

   Ithaca 
  formation 
  of 
  eastern 
  New 
  York. 
  The 
  geological 
  range 
  of 
  

   20 
  of 
  these 
  species 
  was 
  discussed 
  by 
  the 
  writer 
  a 
  few 
  years 
  ago° 
  

   and 
  it 
  hardly 
  seems 
  necessary 
  to 
  go 
  over 
  that 
  argument 
  again. 
  

  

  The 
  rocks 
  of 
  this 
  zone 
  with 
  some 
  of 
  their 
  fossils 
  were 
  briefly 
  

   described 
  by 
  Conrad 
  in 
  1841, 
  who 
  proposed 
  the 
  name 
  Oneonta 
  

   group 
  for 
  the 
  formation. 
  6 
  In 
  his 
  report 
  Conrad 
  named 
  and 
  de- 
  

   scribed 
  the 
  following 
  species: 
  Nuculites 
  cuneiformis, 
  N. 
  mamma 
  

   (now 
  Palaeoneilo 
  maxima 
  (Con.) 
  Hall), 
  and 
  CyprieardiUs 
  carinata 
  

   (now 
  Goni&pliora 
  carinata 
  (Con.) 
  Hall), 
  from 
  this 
  formation 
  at 
  

   Oneonta. 
  This 
  name 
  was 
  proposed 
  two 
  years 
  later 
  than 
  that 
  of 
  

   the 
  Ithaca 
  group 
  by 
  Prof. 
  Hall 
  and 
  apparently 
  was 
  not 
  con- 
  

   sidered 
  in 
  the 
  final 
  reports 
  of 
  the 
  New 
  York 
  survey. 
  Vanuxem 
  

  

  a 
  Am. 
  jour, 
  science. 
  1893, 
  46:227. 
  

  

  b 
  5th 
  an. 
  rep't 
  paleontology 
  of 
  N. 
  Y. 
  (Assembly 
  doc. 
  no. 
  150, 
  1841) 
  p. 
  81. 
  

  

  