﻿NEW 
  STORE 
  i. 
  MUSEUM 
  

  

  nu> 
  QOdOSU0, 
  Hall 
  

   liydictxa 
  acuta. 
  Hull 
  Bp. 
  

  

  cf. 
  Eteoharopora 
  annularis, 
  E7ZrtcA 
  

   Prasopora 
  %p. 
  

  

  DaJmanella 
  teatudinaria, 
  Dolman 
  sp. 
  

   Plectorthis 
  plicatella, 
  Hall 
  

  

  lMatvsiropliia 
  biforaia. 
  Schlothem 
  sp. 
  

  

  Plectambonites 
  sericea, 
  Howerby 
  sp. 
  

  

  Bafinseaqnina 
  alternata, 
  Emmons 
  Bp. 
  

  

  Ethynchotrema 
  increbescens, 
  JlaH 
  sp. 
  (= 
  inaequivalvis, 
  Castd- 
  

   nou 
  Bp.) 
  

  

  Proetus 
  parviusculus, 
  7/</// 
  

  

  Oi 
  these 
  species 
  Schizocrinus 
  nod 
  as 
  us 
  indicates 
  the 
  

   aton 
  age 
  in 
  general, 
  while 
  P 
  a 
  c 
  h 
  y 
  d 
  i 
  c 
  ty 
  a 
  acuta 
  is 
  re- 
  

   ported 
  by 
  Ball 
  (7: 
  75) 
  as 
  "of 
  frequent 
  occurrence 
  in 
  both 
  the 
  

   lower 
  and 
  central 
  portions 
  of 
  the 
  Trenton 
  limestone", 
  a 
  state- 
  

   ment 
  with 
  which 
  Winchell 
  and 
  Ulrich 
  concur 
  in 
  reporting 
  the 
  

   fossil 
  from 
  the 
  Clitambonites, 
  Fusispira 
  and 
  Nematopora 
  beds 
  of 
  

   Minnesota 
  <4!>: 
  111). 
  Escharopora 
  is, 
  according 
  to 
  the 
  

   same 
  authors, 
  restricted 
  to 
  the 
  Stones 
  river, 
  Black 
  river, 
  lower 
  

   and 
  central 
  Trenton 
  beds. 
  Rhynchotrema 
  increbes- 
  

  

  M 
  Bj 
  in 
  the 
  restricted 
  meaning 
  (i. 
  e. 
  with 
  the 
  exclusion 
  of 
  the 
  

   distinct 
  Lorraine 
  form. 
  R. 
  cap 
  a 
  x, 
  originally 
  included 
  by 
  Hall 
  in 
  

  

  - 
  species) 
  i> 
  a 
  Trenton 
  form. 
  In 
  the 
  west 
  it 
  occurs 
  in 
  the 
  upper 
  

  

  Black 
  iiv<-i- 
  group, 
  lower 
  and 
  middle 
  Trenton 
  (49: 
  cxv) 
  and 
  in 
  

  

  Canada 
  ii 
  is 
  found 
  in 
  Black 
  river 
  and 
  lower 
  Trenton. 
  It 
  is, 
  

  

  hence, 
  indicative 
  of 
  the 
  lower 
  or 
  middle 
  Trenton 
  age 
  of 
  the 
  Troy 
  

  

  beds. 
  Proetue 
  parviusculus 
  was 
  originally 
  described 
  

  

  by 
  Hall 
  Ml: 
  223) 
  as 
  occurring 
  "in 
  shales 
  of 
  ill.- 
  Eudson 
  river 
  

  

  |. 
  Cincinnati, 
  Ohio". 
  The 
  correlation 
  of 
  these 
  sidles 
  has, 
  

  

  however, 
  changed 
  Bince 
  thai 
  time; 
  for 
  Winchell 
  and 
  Ulrich 
  

  

  the 
  form 
  from 
  the 
  Trenton 
  of 
  the 
  Cincinnati 
  region. 
  Dr 
  

  

  I: 
  754) 
  reports 
  it 
  from 
  th< 
  base 
  of 
  iin- 
  Galena 
  shales 
  

  

  ;ii 
  >i 
  Paul 
  (Clitambonites 
  bed, 
  Winchell 
  and 
  Ulrich, 
  which 
  is 
  

  

  low. 
  aton). 
  [n 
  Canada 
  it 
  has 
  also 
  been 
  found 
  in 
  the 
  Trenton. 
  

  

  