﻿AND 
  AYES 
  OF 
  NORTH 
  AMERICA. 
  

  

  119 
  

  

  Fig. 
  32. 
  

  

  Fie. 
  33. 
  

  

  Fig. 
  34. 
  

  

  Fig. 
  32a. 
  

  

  These 
  indicate 
  a 
  more 
  or 
  less 
  elongate 
  metatarsal 
  region 
  and 
  elevation 
  of 
  the 
  heel 
  

   above 
  the 
  ground. 
  

  

  Upper 
  cretaceous, 
  upper 
  green 
  sand 
  bed 
  Monmouth 
  Co., 
  N. 
  J. 
  

  

  COELOSAURUS, 
  Leidy. 
  

  

  Another 
  bird-like 
  t)-pe 
  of 
  dinosaur, 
  like 
  Laelaps. 
  The 
  only 
  species 
  known 
  is 
  of 
  more 
  

   slender 
  build 
  and 
  smaller 
  size 
  than 
  the 
  latter. 
  The 
  hollowness 
  of 
  its 
  bones, 
  etc., 
  indicate 
  

   its 
  powers 
  as 
  a 
  runner 
  or 
  leaper. 
  But 
  few 
  remains 
  of 
  the 
  genus 
  have 
  been 
  procured. 
  It 
  

   is 
  known 
  only 
  from 
  one 
  tibia. 
  From 
  this 
  slight 
  indication 
  the 
  degree 
  of 
  difference 
  in 
  

   general 
  structure 
  is 
  not 
  readily 
  attainable. 
  The 
  tibia 
  is 
  in 
  all 
  its 
  proportions 
  more 
  slen- 
  

   der, 
  and 
  presents 
  a 
  higher 
  crest 
  ; 
  its 
  distal 
  articular 
  surface 
  is 
  more 
  transverse 
  to 
  its 
  longi- 
  

   tudinal 
  axis. 
  The 
  species 
  C. 
  antiquus 
  has 
  been 
  much 
  smaller, 
  and 
  more 
  lightly 
  built 
  ; 
  the 
  

   tibia 
  is 
  about 
  one-fifth 
  the 
  size 
  of 
  that 
  of 
  L. 
  aquilunguis. 
  

  

  COELOSAURUS 
  ANTIQUUS, 
  Leidy. 
  

   Cret. 
  Rept. 
  p. 
  119 
  (name) 
  & 
  100. 
  Tab. 
  Ill, 
  f. 
  1, 
  18G5. 
  

  

  Cretaceous 
  green 
  sand 
  of 
  New 
  Jersey. 
  

  

  BATHYGNATHUS, 
  Leidy. 
  

   BATHYGNATHUS 
  BOREALIS, 
  Leidy. 
  

   Leidy, 
  Journ. 
  Ac. 
  Nat. 
  Sci., 
  Phila., 
  1854, 
  p. 
  327, 
  Tab. 
  xxxiii. 
  

  

  Known 
  only 
  from 
  a 
  portion 
  ol 
  mandibular 
  ramus 
  with 
  teeth. 
  Probably 
  one 
  of 
  the 
  

   types 
  whose 
  tracks 
  are 
  preserved 
  in 
  the 
  red 
  sandstones 
  of 
  the 
  Connecticut 
  Valley. 
  

   Though 
  placed 
  among 
  the 
  Thecodonts 
  by 
  Owen, 
  I 
  greatly 
  suspect 
  that 
  its 
  true 
  place 
  is 
  

   here. 
  Triassic 
  red 
  sandstone 
  of 
  Prince 
  Edward's 
  Island, 
  New 
  Brunswick. 
  

  

  