﻿0. 
  C. 
  Marsh 
  — 
  The 
  Stylinodontia. 
  

  

  139 
  

  

  The 
  first 
  dorsal 
  vertebra 
  has 
  a 
  very 
  high, 
  strong 
  spine, 
  as 
  

   shown 
  in 
  figures 
  3 
  and 
  4. 
  The 
  other 
  anterior 
  dorsals 
  have 
  also 
  

   elevated 
  neural 
  spines, 
  and 
  nearly 
  flat 
  articular 
  faces 
  on 
  the 
  

   centra. 
  

  

  The 
  Scapular 
  Arch. 
  

  

  The 
  scapula 
  of 
  Stylinodon 
  is 
  narrow, 
  with 
  the 
  acromion 
  

   projecting 
  but 
  slightly 
  below 
  the 
  glenoid 
  fossa, 
  as 
  shown 
  in 
  

   figure 
  5. 
  The 
  posterior 
  border 
  is 
  not 
  expanded. 
  The 
  anterior 
  

   portion 
  is 
  somewhat 
  wider 
  than 
  the 
  posterior, 
  and 
  there 
  is 
  no 
  

   coracoid 
  process. 
  There 
  is 
  a 
  well-developed 
  clavicle. 
  This 
  is 
  

   of 
  moderate 
  size, 
  with 
  the 
  shaft 
  somewhat 
  flattened. 
  It 
  articu- 
  

   lated 
  above 
  with 
  the 
  lower 
  end 
  of 
  the 
  acromion, 
  and 
  below 
  with 
  

   the 
  sternum, 
  but 
  is 
  not 
  represented 
  in 
  the 
  figures. 
  

  

  Figure 
  1. 
  — 
  Left 
  incisiform 
  tooth 
  of 
  Stylinodon 
  mirus, 
  Marsh 
  ; 
  outer 
  view. 
  

   Figure 
  2. 
  — 
  Molar 
  series 
  of 
  right 
  lower 
  jaw 
  of 
  same 
  individual; 
  inner 
  view. 
  

   I, 
  socket 
  of 
  first 
  premolar 
  ; 
  VI, 
  socket 
  of 
  penultimate 
  molar. 
  

   Both 
  figures 
  are 
  natural 
  size. 
  

  

  The 
  Fore 
  Leg. 
  

  

  The 
  fore 
  leg 
  of 
  Stylinodon 
  minis, 
  as 
  represented 
  in 
  the 
  

   second 
  specimen 
  above 
  mentioned, 
  is 
  shown 
  in 
  figure 
  5, 
  one- 
  

   fourth 
  natural 
  size, 
  with 
  the 
  scapula 
  (s), 
  the 
  whole 
  nearly 
  in 
  the 
  

   position 
  in 
  which 
  it 
  was 
  found. 
  The 
  humerus 
  (A) 
  is 
  seen 
  in 
  

   this 
  figure 
  from 
  the 
  outside, 
  and 
  its 
  connections 
  above 
  and 
  

   below 
  are 
  clearly 
  indicated. 
  As 
  this 
  bone 
  is 
  especially 
  charac- 
  

   teristic, 
  both 
  of 
  the 
  genus 
  and 
  to 
  a 
  certain 
  extent 
  of 
  the 
  

   order, 
  it 
  is 
  important 
  to 
  present 
  here 
  all 
  its 
  typical 
  features. 
  

  

  