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  PLATE 
  IX. 
  

  

  Page. 
  

  

  DELTOU 
  I 
  W 
  lil 
  

  

  ! 
  tndlbnlar 
  posterior 
  tooth, 
  left 
  rainus, 
  from 
  above. 
  • 
  ro- 
  

  

  ute 
  from 
  antero-latern! 
  ateral 
  border. 
  91 
  

  

  Louis; 
  Pella. 
  Iowa. 
  Mr. 
  Bt 
  John. 
  

   * 
  Fig. 
  ia. 
  Same 
  form, 
  right 
  ramus, 
  eii 
  Mine 
  formation, 
  locality 
  and 
  ool 
  

  

  s 
  Fig. 
  3a. 
  Outline 
  of 
  a 
  mandibular 
  median 
  tooth, 
  left 
  ramu-, 
  tru: 
  a'ove. 
  enlarged. 
  Bt 
  

   Louis; 
  SI 
  Ho. 
  Mr. 
  St. 
  John. 
  

  

  Fig. 
  4 
  a. 
  Maxillary 
  posterior 
  tooth, 
  right 
  ramus, 
  from 
  above, 
  enlarged: 
  4 
  h. 
  do., 
  tr 
  

   verse 
  profile 
  from 
  inner 
  margin: 
  4 
  c. 
  do., 
  longitudinal 
  

   ro-lateral 
  border, 
  extremity 
  restored 
  In 
  outline. 
  - 
  va. 
  

  

  Mr. 
  Van 
  Home. 
  

   o 
  Fig- 
  Similar 
  views 
  of 
  the 
  same 
  form, 
  left 
  ramus, 
  showing 
  'example. 
  

  

  Same 
  formation 
  and 
  locality. 
  Mr. 
  Bt 
  John. 
  

  

  Deltom 
  DB, 
  Bt 
  J. 
  and 
  W 
  let 
  

  

  Fig. 
  8 
  a. 
  Mandibular 
  posterior 
  tooth, 
  left 
  ramus, 
  view 
  from 
  above, 
  extremity 
  restored 
  

   in 
  outline; 
  6 
  b, 
  do., 
  from 
  inner 
  margin, 
  transverse 
  prt 
  

  

  ro-lateral 
  border, 
  longitudinal 
  proille. 
  Warsaw 
  

   III. 
  i 
  ■ 
  ten. 
  

  

  Fig. 
  7 
  a. 
  h. 
  c. 
  Similar 
  views 
  of 
  a 
  maxillary 
  posterior 
  tooth, 
  left 
  ramus. 
  Lai 
  • 
  

  

  Hon. 
  Ho. 
  Prof. 
  Worthen. 
  

  

  DELTODUH 
  7HIL0BV8. 
  St. 
  J. 
  and 
  W 
  

  

  Pig. 
  8a. 
  Mandibular 
  median 
  tooth, 
  left 
  ramus, 
  view 
  from 
  n' 
  uner 
  

   margin: 
  9 
  o. 
  do., 
  from 
  outer 
  margin, 
  extremity 
  broken 
  an 
  I 
  '.o„ 
  

   longitudinal 
  profile 
  from 
  antero-latersl 
  border; 
  8 
  a. 
  do., 
  from 
  postero- 
  

   lateral 
  border; 
  9 
  r 
  tion, 
  showing 
  prom 
  • 
  of 
  

   the 
  anterior 
  and 
  posterior 
  lobes. 
  Warsaw 
  Um 
  'y. 
  

   III. 
  Prof. 
  Won 
  

   Deltodub 
  occidental!* 
  (Leldy, 
  »p.). 
  

  

  Fig. 
  !' 
  a. 
  Maxillary 
  posterior 
  t'>oth. 
  left 
  ramus, 
  from 
  ;. 
  re. 
  8t 
  1 
  

   Monroe 
  county. 
  111. 
  Prof. 
  Worlben. 
  

  

  Fig. 
  l"a. 
  Mandibular 
  medlaatOOtb, 
  right 
  ramus, 
  tromabove. 
  outer 
  extremity 
  broken 
  

   away; 
  to 
  b. 
  do., 
  from 
  antero-lateral 
  border; 
  U 
  rai 
  

  

  border; 
  10 
  d.do.. 
  tran-' 
  n, 
  Wanan 
  Mf, 
  III. 
  IV 
  

  

  Worthen. 
  

  

  I'll. 
  TOPI'S 
  J.ATIol. 
  ! 
  W 
  

  

  Fig. 
  ii 
  a. 
  Medlnm-slse 
  tooth 
  of 
  tbe 
  mandibular 
  posterior 
  I 
  

  

  Keokuk; 
  Hamilton. 
  III. 
  Prof, 
  w.ir:' 
  

   Fla.Ua, 
  A. 
  smaller 
  individual 
  of 
  tbe 
  same 
  form; 
  - 
  illty. 
  

   Pig. 
  18 
  a. 
  t\o. 
  Ueltodos 
  . 
  in. 
  .ri 
  > 
  i 
  w 
  

  

  III.. 
  Vol. 
  I! 
  

  

  18 
  a. 
  Maxiiiar 
  th, 
  left 
  ramus, 
  from 
  

  

  ro-lat.-rnl 
  border; 
  18 
  o. 
  outline 
  from 
  lnn<-r 
  margin. 
  •• 
  Me. 
  

  

  •••r. 
  III. 
  1 
  

  

  ■ 
  

  

  Fig. 
  14 
  a. 
  Haxlllary 
  posterior 
  tootb, 
  left 
  i 
  i 
  above; 
  14 
  :lle 
  

  

  from 
  Inner 
  margin; 
  It 
  

   lateral 
  border. 
  longitudinal 
  

  

  14 
  ' 
  8tl 
  iuIs 
  form.. 
  va. 
  

  

  'in. 
  

   • 
  . 
  /. 
  Kimllnr 
  right 
  ramu*. 
  

  

  wing 
  ibi 
  ronal 
  sui 
  Face. 
  8. 
  Is. 
  

  

  Mom 
  

  

  

  