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  PALAEONTOLOGY 
  OF 
  ELLINOK 
  

  

  .Mandibular 
  median 
  teeth 
  Bab-triangolv 
  in 
  outline. 
  Postcro- 
  

   lateral 
  border 
  slightly 
  curved 
  sigmoidally 
  in 
  conformity 
  with 
  the 
  

   anterior 
  articular 
  border 
  of 
  the 
  posterior 
  terminal 
  tootb, 
  basal 
  

   portion 
  rather 
  deeply 
  channeled 
  and 
  coarsely 
  pitted, 
  forming 
  the 
  

   greater 
  part 
  of 
  the 
  height 
  of 
  the 
  border, 
  well-defined 
  from 
  the 
  

   enamel-fold 
  and 
  terminating 
  below 
  in 
  a 
  thin 
  outward 
  produced 
  

   rim; 
  antero-lateral 
  border 
  converging 
  toward 
  outer 
  extremity 
  at 
  an 
  

   angle 
  of 
  about 
  30 
  with 
  the 
  opposite 
  border, 
  relatively 
  short, 
  simi- 
  

   larly 
  channeled 
  and 
  pitted 
  as 
  mentioned 
  in 
  connection 
  with 
  the 
  

   posterior 
  border; 
  inner 
  margin 
  making 
  a 
  marked 
  sigmoidal 
  curva- 
  

   ture, 
  broadly 
  rounded 
  in 
  passing 
  the 
  base 
  of 
  the 
  coronal 
  promi- 
  

   nence, 
  and 
  thence 
  curved 
  outward 
  on 
  approaching 
  the 
  obtuse 
  

   anterior 
  angle, 
  joining 
  the 
  posterior 
  border 
  nearly 
  at 
  a 
  right 
  angle. 
  

   Coronal 
  contour 
  presenting 
  a 
  simple 
  median 
  ridge, 
  the 
  posterior 
  

   slope 
  slightly 
  arched 
  transversely 
  and 
  gently 
  descending 
  to 
  the 
  

   postero-lateral 
  border, 
  which 
  is 
  occupied 
  by 
  an 
  abruptly 
  beveled 
  

   slightly 
  depressed 
  belt 
  margined 
  by 
  a 
  narrow, 
  minutely 
  crenolated 
  

   fold 
  distinctly 
  defining 
  the 
  coronal 
  and 
  basal 
  portions,— 
  worn 
  indi- 
  

   viduals 
  showing 
  a 
  more 
  or 
  less 
  rounded 
  edge; 
  the 
  opposite 
  slope 
  

   declines 
  more 
  abruptly 
  into 
  a 
  shallow 
  depressed 
  belt 
  occupying 
  the 
  

   anterior 
  surface, 
  bordered 
  by 
  the 
  narrow 
  alation, 
  over 
  the 
  edge 
  of 
  

   which 
  the 
  enamel 
  makes 
  a 
  regularly 
  rounded 
  fold 
  sharply 
  denned 
  

   along 
  the 
  strongly 
  inbeveled 
  margin 
  from 
  the 
  basal 
  portion; 
  along 
  

   the 
  inner 
  margin 
  the 
  coronal 
  region 
  is 
  defined 
  by 
  a 
  narrow 
  rounded 
  

   fold 
  inbeveled 
  to 
  the 
  deep 
  basal 
  belt, 
  which 
  extends 
  downward 
  int< 
  

   a 
  thin 
  edge 
  corresponding 
  with 
  that 
  of 
  the 
  posterior 
  tooth. 
  Super- 
  

   licial 
  enamel 
  and 
  punctate 
  structure 
  the 
  same 
  as 
  described 
  in 
  

   connection 
  with 
  the 
  preceding 
  form. 
  Length 
  along 
  postero-lateral 
  

   border 
  10 
  mm,; 
  greatest 
  breadth 
  between 
  the 
  inner 
  angles 
  9 
  mm.; 
  

  

  length 
  of 
  antero-lateral 
  bonier 
  to 
  point 
  of 
  inrolluient 
  ('. 
  mm. 
  

  

  Ultimate 
  teeth 
  oocupying 
  the 
  dentigeroua 
  extremity 
  of 
  the 
  lower 
  

  

  jaw 
  unknown. 
  

  

  Maxillary 
  posterior 
  teeth 
  [Streblodut, 
  \ 
  rabspatulate 
  in 
  

  

  eral 
  outliih 
  nlarly 
  arohed 
  from 
  within 
  outward. 
  

  

  Ant.ro 
  lateral 
  border 
  with 
  Blight 
  forward 
  obliquity 
  to 
  the 
  long 
  B 
  

   of 
  the 
  tooth 
  and 
  gently 
  curved 
  Bigmoidally, 
  basal 
  portion 
  channeled 
  

   and 
  extending 
  downward 
  and 
  outward 
  into 
  a 
  thin 
  rim, 
  i 
  

   pitted; 
  postero-lateral 
  border 
  broadly 
  arohed 
  in 
  a 
  slight 
  sigmoida! 
  

   curvature, 
  converging 
  toward 
  inrolled 
  outer 
  margin 
  at 
  the 
  angl< 
  

  

  to 
  66 
  with 
  the 
  opposite 
  ide, 
  basal 
  portion 
  apparently 
  relatively 
  

   low, 
  channeled, 
  and 
  posteriorly 
  expanding 
  beyond 
  the 
  coronal 
  limit 
  

  

  