﻿PLATE 
  XV 
  

  

  ,a*' 
  

  

  PSAJI 
  tODUB 
  OEANDI8, 
  St. 
  J. 
  and 
  \V 
  .Ml 
  

  

  Fig 
  1 
  n. 
  Mandibular 
  tooth, 
  from 
  above, 
  showing 
  a 
  fragment 
  of 
  a 
  very 
  largo 
  example, 
  

   the 
  trituatlng 
  surface 
  but 
  si 
  islitly 
  worn, 
  restored 
  in 
  ou: 
  . 
  .. 
  

  

  from 
  the 
  posterior 
  margin; 
  1 
  o. 
  do., 
  anterior 
  margin; 
  1 
  </. 
  do.. 
  profile 
  sec- 
  

   tion. 
  Keokuk; 
  Keokuk, 
  Iowa. 
  Prof. 
  Worthen. 
  

   la, 
  Maxillary 
  tooth, 
  view 
  from 
  above, 
  ootUi 
  «orn 
  

  

  during 
  i 
  - 
  ., 
  tram 
  t 
  la 
  • 
  ainrgin: 
  . 
  

  

  i.' 
  kak; 
  K< 
  • 
  : 
  -uk. 
  Iowa, 
  Mr. 
  I 
  

  

  J 
  Ig. 
  :i 
  a. 
  A 
  small 
  worn 
  example 
  of 
  the 
  sani" 
  form, 
  view 
  from 
  abo'. 
  

  

  restored: 
  S&. 
  do., 
  from 
  tl 
  'he 
  inner 
  ar- 
  

  

  ticular 
  borili-r. 
  Keokuk; 
  Mr. 
  Spri- 
  . 
  

   i 
  lhm 
  odds 
  tubo] 
  - 
  J. 
  and 
  W 
  *as 
  

  

  Fig. 
  i 
  a. 
  Maxillary 
  tooth, 
  vlei 
  'rom 
  

  

  the 
  p. 
  sterlor 
  margin: 
  I 
  c. 
  do., 
  anterior 
  ma:, 
  lo.. 
  Inner 
  articular 
  

  

  border; 
  4 
  e. 
  do,, 
  from 
  tb 
  I 
  r. 
  C 
  B 
  fee 
  

  

  Moines 
  count 
  v. 
  [own. 
  

  

  