﻿38 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  (Lingulepis) 
  acuminata, 
  Agraulos 
  sp. 
  nov. 
  1 
  and 
  

   Ptychoparia 
  matheri 
  Walcott. 
  

  

  HOYT 
  LIMESTONE 
  MEMBER 
  

  

  In 
  1879 
  Dr 
  C. 
  D. 
  Walcott 
  first 
  described 
  an 
  Upper 
  Cambric 
  

   fauna 
  from 
  limestones 
  of 
  that 
  age 
  in 
  the 
  vicinity 
  of 
  Saratoga, 
  and 
  

   made 
  frequent 
  reference 
  to 
  the 
  same 
  fauna 
  and 
  beds 
  in 
  subsequent 
  

   publications. 
  2 
  In 
  1899 
  Clarke 
  and 
  Schuchert 
  first 
  assigned 
  a 
  name 
  

   to 
  this 
  formation, 
  calling 
  it 
  the 
  Greenfield 
  limestone. 
  3 
  This 
  name, 
  

   however, 
  was 
  preoccupied 
  having 
  been 
  previously 
  assigned 
  to 
  a 
  

   limestone 
  of 
  Siluric 
  (Monroe) 
  age, 
  in 
  central 
  Ohio. 
  A 
  new 
  name 
  

   had 
  therefore 
  to 
  be 
  assigned, 
  and 
  yet 
  no 
  suitable 
  one 
  seemed 
  forth- 
  

   coming. 
  The 
  known 
  exposures 
  of 
  the 
  formation 
  are 
  all 
  in 
  Green- 
  

   field 
  township, 
  and 
  the 
  villages 
  in 
  the 
  township 
  all 
  bear 
  the 
  name 
  

   of 
  Greenfield, 
  in 
  so 
  far 
  as 
  they 
  are 
  located 
  on 
  the 
  formation. 
  There 
  

   are 
  no 
  good 
  exposures 
  of 
  the 
  formation 
  along 
  any 
  watercourse 
  

   whose 
  name 
  could 
  be 
  utilized. 
  The 
  name 
  Saratogan 
  was 
  preoc- 
  

   cupied. 
  Under 
  the 
  circumstances 
  there 
  seemed 
  no 
  alternative 
  but 
  

   to 
  apply 
  to 
  the 
  formation 
  the 
  name 
  of 
  the 
  quarry 
  at 
  which 
  it 
  is 
  

   best 
  and 
  most 
  fully 
  shown 
  (plate 
  2). 
  The 
  name 
  of 
  the 
  quarry 
  has 
  

   already 
  appeared 
  in 
  geologic 
  literature, 
  in 
  papers 
  by 
  Hall, 
  Walcott 
  

   and 
  Prosser. 
  4 
  Unfortunately 
  the 
  farm 
  has 
  changed 
  hands 
  and 
  the 
  

   quarry 
  is 
  no 
  longer 
  locally 
  known 
  as 
  the 
  Hoyt 
  quarry. 
  But 
  no 
  

   other 
  name 
  suggests 
  itself 
  as 
  suitable, 
  and 
  we 
  are 
  therefore 
  pro- 
  

   posing 
  the 
  name 
  Hoyt 
  limestone 
  for 
  the 
  formation, 
  at 
  the 
  same 
  time 
  

   indicating 
  the 
  location 
  of 
  the 
  quarry 
  upon 
  the 
  geologic 
  map. 
  

  

  In 
  an 
  earlier 
  paper 
  by 
  Ulrich 
  and 
  Cushing 
  this 
  Hoyt 
  limestone 
  

   was 
  made 
  a 
  basal 
  member 
  of 
  the 
  Little 
  Falls 
  dolomite, 
  the 
  next 
  

   formation 
  above. 
  5 
  More 
  strictly, 
  however, 
  it 
  seems 
  a 
  phase 
  of 
  the 
  

   upper 
  portion 
  of 
  the 
  Theresa 
  formation, 
  the 
  thickness 
  of 
  the 
  

   Theresa 
  and 
  Hoyt 
  together, 
  in 
  the 
  vicinity 
  of 
  Saratoga, 
  about 
  equal- 
  

   ing 
  the 
  thickness 
  of 
  the 
  Theresa 
  alone 
  north 
  and 
  west 
  of 
  Saratoga 
  ; 
  

  

  1 
  Regarding 
  this 
  Dr 
  C. 
  D. 
  Walcott 
  writes 
  Doctor 
  Ruedemann 
  this 
  form 
  is 
  

   " 
  very 
  closely 
  related, 
  if 
  not 
  identical 
  with 
  a 
  species 
  of 
  Agraulos 
  which 
  I 
  

   have 
  marked 
  as 
  a 
  new 
  species 
  from 
  the 
  upper 
  beds 
  of 
  the 
  St 
  Croix 
  sand- 
  

   stone 
  of 
  Wisconsin." 
  

  

  2 
  N. 
  Y. 
  State 
  Mus. 
  Nat. 
  Hist. 
  326. 
  Ann. 
  Rep't, 
  p. 
  129-31 
  ; 
  U. 
  S. 
  Geol. 
  Surv. 
  

   Bui. 
  81, 
  p. 
  346-47- 
  

  

  3 
  Science, 
  December 
  15, 
  1899. 
  

  

  4 
  N. 
  Y. 
  State 
  Mus. 
  Nat. 
  Hist. 
  36th 
  Ann. 
  Rep't, 
  pi. 
  6, 
  description 
  ; 
  Science, 
  

   1884, 
  3:i37; 
  N. 
  Y. 
  State 
  Mus. 
  Bui. 
  34, 
  p. 
  478-79- 
  

  

  5 
  N. 
  Y. 
  State 
  Mus. 
  Bui. 
  140, 
  p. 
  129. 
  

  

  