﻿3o8 
  Geological 
  Survey 
  of 
  Louisiana 
  [Sect, 
  

  

  Turritella 
  mortoni, 
  Plate 
  55, 
  fig. 
  4. 
  

  

  Syn. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  74, 
  pi. 
  10, 
  figs. 
  3 
  and 
  4. 
  

  

  This 
  is 
  one 
  of 
  the 
  most 
  common 
  and 
  widely 
  distributed 
  species 
  

   in 
  the 
  Lower 
  Eocene 
  of 
  the 
  east 
  and 
  southern 
  States. 
  

  

  Many 
  of 
  the 
  Louisiana 
  specimens 
  are 
  rather 
  diminutive 
  in 
  size. 
  

  

  Localities. 
  — 
  Pendleton, 
  Tex.; 
  well 
  on 
  S. 
  W. 
  %, 
  S. 
  W. 
  %, 
  Sect. 
  

   18, 
  7 
  N., 
  10 
  W., 
  near 
  Ft. 
  Jessup 
  ; 
  Marthaville 
  ; 
  La 
  Nana 
  bayou 
  

   near 
  Many, 
  

  

  Turritella 
  humerosa, 
  Plate 
  55, 
  fig. 
  5. 
  

  

  Syn, 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  75, 
  pi. 
  10, 
  figs. 
  5-7, 
  1899. 
  

  

  Also 
  a 
  widely 
  distributed 
  lower 
  Eocene 
  species 
  ; 
  but 
  very 
  dif- 
  

   ficult 
  to 
  obtain 
  in 
  perfect 
  form. 
  

  

  Localities. 
  — 
  La 
  Nana 
  bayou 
  ; 
  Williams 
  place, 
  i 
  mi. 
  E. 
  of 
  Ft. 
  

   Jessup, 
  La. 
  

  

  Turritella 
  prsecincta, 
  Plate 
  55, 
  fig. 
  6. 
  

  

  Syn. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  76, 
  pi. 
  10, 
  fig. 
  8, 
  1899. 
  

  

  This 
  is 
  a 
  rare 
  companion 
  of 
  the 
  two 
  preceding 
  species 
  in 
  the 
  

   Lower 
  Lignitic 
  beds. 
  

  

  Locality. 
  — 
  Pendleton, 
  Texas. 
  

  

  Natica 
  eminula, 
  . 
  Plate 
  55, 
  fig. 
  7. 
  

  

  S)^. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  88, 
  pi. 
  11, 
  fig. 
  22, 
  1899. 
  

  

  This 
  is 
  a 
  very 
  common 
  Eocene 
  form 
  and 
  may 
  be 
  found 
  from 
  

   the 
  Jackson 
  to 
  the 
  Midway 
  beds. 
  

  

  Localities. 
  — 
  Pendleton 
  and 
  Sabinetown, 
  Texas. 
  

  

  Natica 
  aperta, 
  Plate 
  55, 
  fig. 
  8. 
  

  

  Syn. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  90, 
  pi. 
  11, 
  fig. 
  27, 
  1899. 
  

   This 
  is 
  a 
  common 
  and 
  characteristic 
  Lower 
  Lignitic 
  species. 
  

   Locality. 
  — 
  Pendleton, 
  Texas. 
  

  

  Natica 
  alabamiensis, 
  Plate 
  55, 
  fig. 
  9. 
  

  

  Syn. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol, 
  3, 
  p, 
  91, 
  etc. 
  

  

  This 
  is 
  found 
  in 
  the 
  Low^er 
  Lignitic 
  and 
  Upper 
  Midway 
  beds 
  

   of 
  Alabama, 
  

  

  Locality. 
  — 
  Pendleton, 
  Texas. 
  

  

  Sigaretus 
  declivus, 
  Plate 
  55, 
  fig, 
  10, 
  

  

  Syn, 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  3, 
  p. 
  93, 
  pi. 
  11, 
  fig. 
  30, 
  1899. 
  

  

  