﻿456 
  J. 
  Barrell 
  — 
  Upper 
  Devonian 
  Delta 
  of 
  the 
  

  

  Depth 
  

  

  below 
  

  

  Thick- 
  top 
  of 
  

  

  ness 
  Sum 
  Pocono 
  

  

  Dark 
  flaggy 
  sandstones 
  and 
  blackish 
  gray 
  siliceous 
  

   shales. 
  The 
  bottoms 
  of 
  the 
  sandstones 
  

   show 
  ripple 
  marks. 
  Fossils 
  collected 
  at 
  

  

  the 
  following 
  levels 
  : 
  555 
  

  

  D. 
  In 
  sandstone, 
  fragmentary 
  land 
  plants, 
  —9100 
  

  

  C. 
  In 
  siliceous 
  shales, 
  Spirifer 
  mesastri- 
  

   alis, 
  S. 
  sculptilis, 
  Camarotcechia 
  contracta, 
  

  

  Coleolus 
  acicula 
  — 
  9127 
  

  

  B. 
  In 
  fine 
  grained 
  sandstone, 
  large 
  Spiri- 
  

   fers 
  much 
  like 
  S. 
  granulosus. 
  Tropido- 
  

   leptus 
  carinatus 
  may 
  be 
  present. 
  In 
  sili- 
  

   ceous 
  shales, 
  small 
  fossils 
  of 
  Spirifer 
  sculp- 
  

   tilis, 
  S. 
  granulosus 
  and 
  <S. 
  mesastrialis 
  — 
  9160 
  

  

  A. 
  In 
  fine 
  grained 
  sandstone, 
  a 
  small 
  

   Spirifer, 
  probably 
  S. 
  sculptilis, 
  Camaro- 
  

   toechia 
  contracta, 
  Coleolus 
  acicula 
  — 
  9204 
  

  

  Gray 
  black, 
  ripple 
  marked 
  siliceous 
  shales. 
  

   Exposure 
  ends 
  at 
  Conner's 
  Station, 
  P. 
  & 
  

  

  R. 
  R. 
  R... 
  165 
  1042 
  -9500 
  

  

  The 
  south 
  side 
  of 
  the 
  station, 
  north 
  side 
  

   of 
  the 
  wagon 
  road, 
  is 
  at 
  —9500. 
  

  

  Fossils 
  determined 
  by 
  Professor 
  Charles 
  

   Schuchert 
  from 
  material 
  collected 
  by 
  

   Joseph 
  Barrell. 
  

  

  The 
  section, 
  which 
  will 
  be 
  discussed 
  from 
  the 
  bottom 
  up- 
  

   ward, 
  begins 
  with 
  the 
  shales 
  exposed 
  at 
  Conners 
  station 
  on 
  the 
  

   Philadelphia 
  and 
  Reading 
  Railroad, 
  one 
  mile 
  northwest 
  of 
  

   Schuylkill 
  Haven. 
  This 
  is 
  stratigraphically 
  somewhat 
  below 
  

   the 
  crest 
  of 
  the 
  ridge 
  made 
  by 
  a. 
  series 
  of 
  hard 
  dark 
  flaggy 
  

   sandstones 
  from 
  which 
  strata 
  fossils 
  were 
  collected 
  at 
  three 
  

   levels, 
  A, 
  B, 
  C, 
  within 
  75 
  feet 
  of 
  each 
  other. 
  According 
  to 
  

   Professor 
  Schuchert, 
  locality 
  A 
  indicates 
  Portage 
  ; 
  B, 
  Portage 
  

   and 
  Chemung 
  ; 
  C, 
  Chemung. 
  A 
  sharp 
  delimitation 
  is 
  diffi- 
  

   cult 
  since 
  it 
  has 
  been 
  found 
  that 
  in 
  eastern 
  New 
  York 
  certain 
  

   elements 
  of 
  the 
  Hamilton 
  fauna 
  persist 
  through 
  Portage 
  time 
  

   and 
  even 
  into 
  the 
  Chemung, 
  Spirifer 
  sculptilis 
  being 
  such 
  a 
  

   form. 
  The 
  synchronous 
  relationships 
  of 
  these 
  eastern 
  and 
  

   western 
  faunas 
  are 
  brought 
  out 
  by 
  H. 
  S. 
  Williams 
  in 
  the 
  

   WatkinsGlen-Catatonk 
  folio, 
  U. 
  S. 
  Geol. 
  Surv., 
  p. 
  6, 
  1909. 
  

   The 
  fossiliferous 
  beds 
  of 
  the 
  Schuylkill 
  River 
  section 
  cannot 
  

   be 
  above 
  lower 
  Chemung 
  since 
  Spirifer 
  disjunctus 
  is 
  absent. 
  

   Of 
  the 
  two 
  fossils 
  Camarotoechia 
  contracta 
  and 
  Coleolus 
  

   acicula, 
  found 
  together 
  at 
  horizon 
  C, 
  the 
  first 
  occurs 
  only 
  in 
  

   the 
  Chemung 
  of 
  Williams's 
  lists, 
  the 
  second 
  only 
  in 
  the 
  Port- 
  

   age. 
  From 
  the 
  lithologic 
  standpoint 
  the 
  flaggy 
  sandstones 
  and 
  

   dark 
  siliceous 
  shales 
  are 
  of 
  Portage 
  character 
  ; 
  the 
  soft 
  gray 
  

   and 
  olive 
  sandy 
  shales 
  above 
  are 
  Chemung 
  in 
  type. 
  The 
  

   division 
  plane 
  between 
  the 
  two 
  types 
  is, 
  however, 
  known 
  to 
  be 
  

  

  