﻿STRATIGRAPHIC 
  GEOLOGY 
  OF 
  THE 
  EASTERN 
  HELDERBERGS 
  35 
  L 
  

  

  24 
  a 
  Stenochisma 
  formosa 
  (Hall) 
  H. 
  & 
  G.-Rhynchonella 
  for- 
  

   mosa 
  H. 
  (it) 
  

  

  2o 
  a 
  Stenochisma 
  altiplicata 
  (Hall) 
  H. 
  & 
  C. 
  (it) 
  

  

  2G 
  a 
  Orthot]ietcs 
  woolicorthana 
  (Hall) 
  H. 
  & 
  C-Strophomena 
  

  

  woolicorthana 
  H. 
  (r) 
  

  

  27° 
  Coelospira 
  conccwa 
  (Hall) 
  H. 
  & 
  0. 
  (r) 
  

  

  28 
  O'rbiculoidea 
  discus 
  (Hall) 
  H. 
  & 
  C. 
  (?) 
  (rr) 
  

  

  29 
  Trematospira 
  sp. 
  (rr) 
  

  

  30 
  Avicula 
  communis 
  H. 
  (r) 
  

   31° 
  Conocardium 
  sp. 
  (rr) 
  

   32 
  Dalmanitcs 
  pleuroptyx 
  (Green) 
  H. 
  (c) 
  

   3S 
  a 
  Phacops 
  logani 
  Hall 
  (?) 
  (rr) 
  

   34 
  Platyceras 
  cf. 
  gebhardi 
  Con. 
  (rr) 
  

   35° 
  P. 
  ventricosum 
  Con. 
  (rr) 
  

   36 
  a 
  Streptelasma 
  strictum 
  H. 
  ; 
  (a) 
  

   37 
  a 
  Favosites 
  sphericus 
  H. 
  (rr) 
  

   3S 
  a 
  Chaetetes 
  (MonotrypcUa) 
  arbusculus 
  H. 
  (rr) 
  

   39 
  a 
  C 
  colliculatus 
  H. 
  (rr) 
  

   40 
  a 
  Tentaculites 
  elongatus 
  H. 
  (rr) 
  

   4:l 
  a 
  Ptilodictya 
  nebulosa 
  H. 
  (rr) 
  

   42° 
  Fenestella 
  sp. 
  , 
  (r) 
  

   4o 
  a 
  Lichcnalia 
  sp. 
  (rr) 
  

  

  A 
  6 
  Becraft 
  limestone 
  . 
  < 
  ; 
  

  

  1 
  Aspidocrinus 
  scutelliformis 
  H. 
  (aa) 
  

  

  2 
  Stroplieodonta 
  becki 
  H. 
  ■ 
  (rr) 
  

  

  3 
  Leptaena 
  rhomboidalis 
  (Wilck.) 
  H. 
  & 
  C. 
  (rr) 
  

  

  4 
  Spirifer 
  concinnus 
  H. 
  (rr) 
  

  

  5 
  Strophonclla 
  punctulifera 
  (Con.) 
  H. 
  & 
  C. 
  (a) 
  

  

  6 
  Atrypa 
  reticularis 
  (Lin.) 
  Dal. 
  (c) 
  

  

  7 
  Orthis 
  (Rhipidomella) 
  discus 
  H. 
  - 
  (rr) 
  

   8 
  6 
  0. 
  (#. 
  ) 
  o&fato 
  H. 
  (r) 
  

   9 
  6 
  0. 
  (Dalmanella) 
  planoconvexa 
  H. 
  (?) 
  (rr) 
  

  

  lO* 
  Or 
  thothetes 
  icooltcorthana 
  (Hall) 
  H. 
  & 
  G.=Strophomena 
  

  

  tcoolworthana 
  H. 
  (rr) 
  

  

  o 
  Collected 
  from 
  Oniskethau 
  creek 
  two 
  miles 
  east 
  of 
  Clarksville. 
  

  

  b 
  Collected 
  in 
  the 
  bed 
  of 
  the 
  Oniskethau 
  creek 
  one 
  mile 
  east 
  of 
  Clarksville. 
  

  

  