﻿REPTILE 
  rOSSIL 
  SKELETONS 
  — 
  GILMORE 
  

  

  199 
  

  

  system 
  * 
  used 
  in 
  doscribing: 
  the 
  osteology 
  of 
  the 
  extant 
  Orocodilvs 
  

   aniericanvs. 
  

  

  For 
  convenience 
  in 
  reference 
  I 
  have 
  included 
  in 
  parallel 
  columns 
  the 
  

   measurements 
  by 
  Mook 
  of 
  a 
  considerably 
  larger 
  (\ 
  amcricanvs. 
  

   In 
  view 
  of 
  the 
  antiquity 
  of 
  the 
  extinct 
  skeleton 
  these 
  measurements 
  

   show 
  a 
  remarkable 
  similarit)" 
  of 
  proportions 
  between 
  the 
  living 
  and 
  

   extinct 
  forms. 
  

  

  Tahle 
  2. 
  — 
  Comparative 
  measurements 
  {in 
  mm.) 
  of 
  cervical, 
  dorsal, 
  luvihar, 
  and 
  

  

  sacral 
  vertebrae 
  

  

  ' 
  Th*> 
  mntKurriiicnts 
  of 
  the 
  vertebrnl 
  centra 
  of 
  Ihn 
  presacral 
  st-rlr* 
  of 
  the 
  fo.ssil 
  specimen 
  do 
  not 
  Include 
  

   the 
  ball, 
  and 
  so 
  In 
  using 
  these 
  mea.surenicnts 
  allowance 
  must 
  bo 
  made 
  for 
  this 
  omission. 
  This 
  discrepancy 
  

   was 
  dui) 
  to 
  the 
  fact 
  that 
  this 
  prjrtlnn 
  of 
  the 
  backbone 
  was 
  articulated 
  in 
  nxed 
  position 
  before 
  It 
  was 
  decided 
  

   to 
  tiko 
  thi? 
  scries 
  of 
  mcfi.<iuremonts. 
  

  

  •Ibid., 
  pp. 
  71-100. 
  

  

  