﻿I 
  

  

  PLATE 
  V. 
  

  

  PAGE. 
  

  

  Fig. 
  i. 
  roPTxczxua 
  WiOBawmo; 
  Bt. 
  J. 
  and 
  w 
  

  

  1 
  a. 
  Posterior 
  tooth 
  of 
  the 
  left 
  ramus 
  of 
  the 
  mandible, 
  viewed 
  from 
  above. 
  

  

  t 
  restored 
  In 
  outline: 
  1 
  b 
  do., 
  seen 
  from 
  the 
  anterolateral 
  

   border: 
  l 
  ' 
  do., 
  showing 
  Inner 
  margin. 
  Keokuk 
  limestone. 
  Warsaw 
  I 
  

   toll. 
  Prof. 
  Worthen. 
  

   J 
  Fig. 
  2 
  a. 
  A 
  similar 
  nn>l 
  more 
  perfect 
  tooth 
  of 
  the 
  right 
  ramus 
  of 
  the 
  mand. 
  

  

  from 
  above; 
  2 
  '< 
  do., 
  antero- 
  lateral 
  border; 
  2 
  do., 
  postero-lateral 
  border. 
  

   Same 
  formation, 
  locality 
  and 
  collection. 
  

   Fig. 
  :t 
  'i. 
  Posterior 
  tooth 
  of 
  the 
  left 
  ramus 
  of 
  the 
  upper 
  jaw, 
  from 
  above; 
  3 
  >•, 
  do. 
  

   file 
  from 
  the 
  inner 
  margin. 
  Same 
  formation, 
  locality 
  and 
  collection. 
  

   i 
  a. 
  Maxillary 
  posterior 
  tooth, 
  right 
  ramus, 
  view 
  from 
  do., 
  outer 
  in- 
  

  

  rolled 
  margin. 
  Same 
  formation, 
  locality 
  and 
  collection. 
  

   Pig. 
  5 
  a. 
  Maxillary 
  posterior 
  tooth 
  and 
  median 
  series 
  of 
  teeth; 
  5'. 
  do., 
  right 
  ramus, 
  

   seen 
  from 
  above, 
  outlli. 
  1. 
  Keokuk 
  limestone. 
  Danville. 
  Iowa. 
  

  

  Co 
  hsmuth. 
  

  

  Deltoptychius 
  peimus, 
  St. 
  J. 
  and 
  W 
  

  

  1 
  8 
  (i. 
  Mandibular 
  posterior 
  tooth, 
  left 
  ramus, 
  seen 
  from 
  above, 
  outline 
  n 
  - 
  

   r 
  Burlington 
  fl.-i 
  I 
  I 
  [OWa. 
  Mr. 
  - 
  

  

  i3»T^' 
  Fig. 
  la. 
  bfaxillary 
  posterior 
  tooth, 
  right 
  ramus, 
  riewed 
  from 
  al 
  sd. 
  

  

  Same 
  horizon 
  and 
  locality. 
  O. 
  St, 
  John. 
  

   Fig. 
  B 
  n. 
  Maxillary 
  posterior 
  tooth, 
  left 
  ramus, 
  from 
  above. 
  Same 
  formation 
  and 
  

  

  locality. 
  Mr. 
  BpringW 
  

  

  DEI.Tol 
  TVinil-S 
  EXPAJJSl 
  -• 
  ' 
  .ud 
  \V 
  W 
  

  

  Fig. 
  9 
  a. 
  An 
  Imperfect 
  posterior 
  tooth 
  of 
  left 
  ramus 
  of 
  mandible, 
  showing 
  coronal 
  

  

  contour, 
  seen 
  from 
  above, 
  outline 
  rest' 
  Louis 
  Urn 
  - 
  

  

  III. 
  Coll. 
  Mr. 
  Van 
  Home. 
  

   Fig. 
  1" 
  "■ 
  Mandibular 
  posterior 
  tooth, 
  right 
  ramus, 
  seen 
  from 
  above. 
  8t. 
  Louis 
  lime- 
  

   stone; 
  St. 
  Louts, 
  U 
  A'ortlien. 
  

   11 
  n. 
  A 
  large 
  niandlbulnr 
  ; 
  fro:., 
  nl 
  .ronal 
  contour 
  ob- 
  

  

  senrad 
  >>■ 
  i 
  Lonls 
  Un 
  01. 
  Coll. 
  Prof. 
  

  

  Worl 
  

  

  . 
  lUry 
  posterior 
  tooth, 
  right 
  ramus 
  Fx 
  

  

  I 
  Hr. 
  Vai. 
  H 
  

  

  I 
  M 
  n. 
  Similar 
  t 
  : 
  per 
  mw. 
  I 
  Same 
  forma 
  

  

  locality 
  ai 
  

  

  DEI.Toi 
  T\< 
  lilt 
  - 
  TtHOTIDIII, 
  S'. 
  J. 
  ai. 
  ' 
  V. 
  ... 
  J6 
  

  

  ••ft 
  ramus 
  

   border 
  restored 
  in 
  oatlli 
  slatted; 
  u- 
  do., 
  showing 
  

  

  I 
  the 
  outer 
  lnroll<»d 
  mark- 
  

  

  ■ 
  

  

  -ma- 
  

   Ill. 
  

  

  *• 
  

  

  i 
  as, 
  s 
  i 
  ■ 
  •d: 
  

  

  ••- 
  

   .,er 
  

  

  

  