﻿II] 
  General 
  Geology 
  : 
  Vicksburg 
  Oligocene 
  93 
  

  

  north 
  of 
  this 
  landing 
  Zeuglodon 
  vertebrae 
  were 
  found 
  together 
  

   with 
  many 
  shells. 
  

  

  Bunker 
  Hill 
  bluff 
  exposes 
  about 
  eighty 
  feet 
  of 
  bluish 
  gray 
  clay 
  

   containing 
  verj^ 
  large 
  selenite 
  crystals. 
  Near 
  the 
  top 
  is 
  a 
  layer 
  

   of 
  large 
  Venericardia 
  planicosta 
  in 
  reddish 
  clay; 
  at 
  a 
  height 
  of 
  sixty 
  

   feet 
  numerous 
  casts 
  of 
  Piiina 
  are 
  in 
  a 
  yellow 
  limestone 
  concretion. 
  

  

  Some 
  of 
  these 
  casts 
  look 
  very 
  much 
  like 
  the 
  teeth 
  of 
  some 
  very 
  

   large 
  animal, 
  and 
  we 
  are 
  not 
  surprised 
  that 
  Judge 
  Bry 
  mistook 
  

   them 
  for 
  such."*^ 
  The 
  main 
  fossiliferous 
  stratum 
  is 
  at 
  the 
  very 
  

   base 
  of 
  the 
  bluff. 
  

  

  Grandview 
  bluff, 
  a 
  mile 
  above 
  Bunker 
  hill, 
  shows 
  about 
  the 
  

   same 
  section. 
  

  

  At 
  Danville 
  landing, 
  about 
  100 
  yards 
  below 
  the 
  Caldwell 
  and 
  

   Catahoule 
  parish 
  line 
  (marked 
  Enterprise 
  on 
  Lockett's 
  map) 
  is 
  a 
  

   bluff 
  about 
  forty 
  feet 
  high 
  composed 
  of 
  bluish 
  yellow 
  marl,v^ery 
  

   fossiliferous. 
  The 
  fossils 
  have 
  a 
  slightly 
  different 
  appearance 
  

   from 
  the 
  Bunker 
  hill 
  shells 
  but 
  are 
  still 
  decidedly 
  Jackson 
  in 
  

   character. 
  

  

  Wyant's 
  bluff, 
  about 
  four 
  miles 
  above 
  Danville, 
  is 
  about 
  

   twelve 
  feet 
  high 
  and 
  shows 
  blue 
  clay 
  with 
  a 
  few 
  impressions 
  and 
  

   occasional 
  pockets 
  of 
  shells. 
  They 
  are 
  the 
  same 
  as 
  found 
  at 
  

   Danville. 
  

  

  OLIGOCENE 
  

  

  Vicksburg 
  

  

  Distribution 
  

  

  Rosefield. 
  — 
  The 
  Vicksburg 
  stage 
  is 
  only 
  very 
  slightly 
  developed 
  

   in 
  Louisiana. 
  It 
  outcrops 
  south 
  of 
  Rosefield 
  and 
  probably 
  occurs 
  

   along 
  Bayou 
  Funne 
  Louis. 
  West 
  of 
  the 
  Little 
  river 
  it 
  has 
  not 
  

   been 
  seen. 
  

  

  Lerch 
  has 
  described 
  a 
  section 
  along 
  Shell 
  creek, 
  three 
  miles 
  

   south 
  of 
  Rosefield 
  in 
  Sec. 
  35, 
  11 
  S., 
  4 
  E., 
  and 
  Vaughan 
  lists 
  

   Dentaliiiyti 
  mississippiense, 
  Ostrea 
  vicksburg 
  ensis 
  , 
  Peden 
  poulsoni, 
  

   Area 
  viississippieyisis, 
  Byssoarca 
  lima, 
  Pechmcidus 
  arctaius, 
  Cras- 
  

   satella 
  niississippiensis, 
  Meretrix 
  sobrina, 
  Balanophyllia 
  caulifera, 
  

   and 
  Orbitoides 
  mantel/i, 
  from 
  this 
  locality. 
  

  

  *Am. 
  Phil. 
  Soc. 
  , 
  Trans., 
  new 
  series, 
  vol. 
  4, 
  pp. 
  400-401, 
  1832. 
  

  

  