﻿PLATE 
  XXVI. 
  

  

  ACONDYI.ACANTHrs? 
  XIPHI 
  AS. 
  St. 
  J. 
  Bod 
  W 
  M 
  

  

  Fig. 
  1 
  a. 
  View 
  of 
  right 
  side 
  of 
  spine, 
  the 
  extremities 
  ami 
  posterior 
  border 
  r> 
  - 
  

  

  outline; 
  1 
  '•, 
  ■ 
  !".. 
  transverse 
  section 
  near 
  middle 
  posterior 
  face 
  restored 
  In 
  

   outline. 
  Keokuk: 
  Keokuk. 
  Iowa. 
  Mr. 
  Cox. 
  

  

  AcoNDTi.ACAXTni'S 
  KEiTis, 
  St. 
  J. 
  anil 
  W 
  j<i 
  

  

  Fig. 
  2, 
  a. 
  View 
  of 
  spine 
  from 
  right 
  siile; 
  8 
  b, 
  do., 
  seotlon 
  Of 
  pi 
  

  

  do., 
  enlargement 
  from 
  middle 
  of 
  spine. 
  Upper 
  Coal 
  Measures: 
  LaSalle. 
  III. 
  

   Prof. 
  Worthen.. 
  

  

  ACONDTLACASTHUS 
  nvpervs, 
  St. 
  J. 
  and 
  \V 
  

  

  Fig. 
  3, 
  a. 
  View 
  of 
  ■pine 
  from 
  left 
  side; 
  8 
  b, 
  do.. 
  enlargement 
  above 
  middle 
  of 
  spine: 
  3 
  o, 
  

   do., 
  transverse 
  section. 
  Upper 
  Coal 
  Measures; 
  Pent, 
  III. 
  Mr. 
  Tiffany. 
  

  

  GYR 
  ACANTHUS? 
  CORDATUS. 
  St. 
  J. 
  and 
  \V 
  .1 
  

  

  J 
  Fig. 
  4 
  n. 
  View 
  of 
  spine 
  from 
  the 
  anterior 
  edge, 
  outline 
  n 
  . 
  the 
  pos- 
  

  

  terior 
  face; 
  4 
  <\ 
  do., 
  from 
  the 
  right 
  - 
  '.■■ 
  . 
  transi 
  

  

  Beotlona 
  at 
  different 
  parti 
  Ine, 
  the 
  posterior 
  wall 
  deal 
  ; 
  ■* 
  ■ 
  t 
  ti 
  

  

  extremities, 
  as 
  shown 
  in 
  figure 
  4 
  b. 
  Keokuk; 
  Ksokuk, 
  Iowa 
  Mr 
  I 
  

  

  