﻿REPTILE 
  FOSSIL 
  SKELETONS 
  — 
  GILMORK 
  201 
  

  

  pi. 
  IG). 
  It 
  entirely 
  encircles 
  the 
  centra 
  and 
  has 
  involved 
  two- 
  

   thirds 
  of 
  the 
  two 
  bones. 
  All 
  evidence 
  of 
  separate 
  structure 
  is 
  prac- 
  

   tically 
  obliterated. 
  The 
  growth 
  is 
  cjuite 
  symmetrical 
  on 
  the 
  two 
  

   sides. 
  

  

  Moodie 
  in 
  the 
  case 
  of 
  the 
  lesion 
  on 
  tiie 
  dinosaur 
  caudals 
  says: 
  

   "The 
  enlargement 
  is 
  somewhat 
  suggestive 
  of 
  the 
  lesion 
  of 
  chronic 
  

   osteomyelitis. 
  It 
  may 
  be 
  a 
  callous 
  growth 
  due 
  possibly 
  to 
  a 
  fracture 
  

   of 
  the 
  caudal 
  vertebrae; 
  or 
  it 
  may 
  be 
  a 
  bone 
  tumor." 
  Its 
  true 
  

   nature 
  is, 
  of 
  course, 
  uncertain, 
  but 
  mention 
  is 
  made 
  of 
  this 
  specimen 
  

   here 
  in 
  order 
  to 
  call 
  it 
  to 
  the 
  attention 
  of 
  students 
  of 
  modern 
  pa- 
  

   thology 
  who 
  may 
  be 
  interested 
  in 
  the 
  study 
  of 
  the 
  nature 
  and 
  origin 
  

   of 
  disease. 
  

  

  RufTer' 
  has 
  reported 
  typical 
  lesions 
  indicating 
  spondylitis 
  dejor- 
  

   mans 
  in 
  the 
  vertebrae 
  of 
  the 
  Miocene 
  crocodile 
  Tomistoma 
  dowsoni, 
  

   from 
  Egypt. 
  In 
  this 
  specunen 
  the 
  extraneous 
  osseous 
  tissue, 
  obvi- 
  

   ously 
  pathologic, 
  binds 
  the 
  vertebrae 
  together. 
  The 
  new 
  bone, 
  

   however, 
  is 
  thicker 
  on 
  one 
  side 
  than 
  on 
  the 
  other, 
  and 
  Moodie 
  ^ 
  

   observes 
  that 
  "in 
  the 
  crocodile 
  as 
  in 
  man 
  the 
  disease 
  is 
  more 
  marked 
  

   on 
  one 
  side." 
  The 
  symmetrical 
  nature 
  of 
  the 
  lesion 
  in 
  the 
  National 
  

   Museum 
  crocodile 
  shown 
  in 
  plate 
  16 
  would 
  therefore 
  rule 
  out 
  spon- 
  

   dylitis 
  dejormans 
  as 
  being 
  responsible 
  for 
  the 
  development 
  of 
  this 
  

   altuormality. 
  

  

  ON 
  A 
  SPECIMEN 
  OF 
  CORYTHOSAURUS 
  

  

  Plates 
  17-19 
  

  

  A 
  partial 
  skeleton 
  of 
  Corythosaurus 
  recently 
  added 
  to 
  the 
  exhibition 
  

   scries 
  in 
  the 
  United 
  States 
  National 
  Museum 
  consists 
  of 
  the 
  complete 
  

   articulated 
  tail, 
  pelvis, 
  hind 
  limbs, 
  and 
  feet, 
  with 
  several 
  small 
  patches 
  

   of 
  skin 
  impressions 
  and 
  o-ssified 
  tendons. 
  This 
  specimen 
  is 
  mounted 
  

   in 
  rehef 
  so 
  as 
  to 
  display 
  the 
  right 
  side; 
  the 
  sandstone 
  blocks 
  containing 
  

   the 
  bones 
  have 
  been 
  assembled 
  in 
  the 
  same 
  relationships 
  the}' 
  occu- 
  

   pied 
  in 
  the 
  ground. 
  The 
  preparation 
  ant! 
  mounting 
  were 
  done 
  by 
  

   Norman 
  H. 
  Boss, 
  and 
  it 
  was 
  due 
  to 
  liis 
  skillful 
  manipulation 
  that 
  so 
  

   much 
  of 
  the 
  epidermal 
  impressions 
  were 
  preserved. 
  

  

  The 
  specimen 
  (L'.S.X.M. 
  No. 
  1549:^) 
  was 
  acquired 
  by 
  purchase 
  

   from 
  the 
  Royal 
  Paleontological 
  Museum 
  of 
  the 
  University 
  of 
  Toronto 
  

   for 
  use 
  in 
  connection 
  with 
  the 
  Smithsonian 
  exhibit 
  at 
  the 
  Texas 
  

   Centennial 
  Exposition 
  at 
  Dallas 
  in 
  \\)'M 
  . 
  It 
  was 
  collected 
  l)y 
  Levi 
  

   Sternberg 
  from 
  the 
  Belly 
  River 
  formation, 
  rpjjer 
  Cretaceous, 
  2 
  miles 
  

   south 
  of 
  St(!veville, 
  on 
  the 
  Red 
  Deer 
  River, 
  Alberta, 
  Canada, 
  in 
  VX.V.\. 
  

  

  From 
  an 
  exhibition 
  standpoint 
  this 
  si)eeimen 
  is 
  of 
  interest 
  in 
  having 
  

   several 
  patches 
  of 
  skin 
  impressions 
  preserved. 
  When 
  found 
  the 
  

  

  • 
  HufT( 
  r, 
  i^\t 
  Marc 
  Arnian<l, 
  A 
  pftlhoIoRlcnl 
  sih-cIiiu'ii 
  diillriK 
  from 
  tho 
  Lower 
  Mio«'iio 
  imtIik!. 
  ]n 
  Appon- 
  

   (llx 
  to 
  Foiirtati's 
  "C"onlrl»>iillon 
  k 
  \'t,i\ii\n 
  Vfrt6br*s 
  .Mloc^kmit 
  do 
  rfegypto," 
  pp. 
  101-109, 
  illiis. 
  Survey 
  

   Dopartnient, 
  MInhtry 
  of 
  FInanro, 
  ralro, 
  1030. 
  

  

  ' 
  Moo'llo, 
  U. 
  L., 
  ralropatliolo?) 
  , 
  p. 
  17.^, 
  1OT3. 
  

  

  