﻿Oriiitkosaurian 
  Genus 
  Oniithoclieirus. 
  539 
  

  

  Oniiihocheirus 
  cUfti 
  (Mautell). 
  Portions 
  of 
  humerus. 
  

   'Medals 
  of 
  Creation; 
  vol. 
  15, 
  (1844) 
  p. 
  806, 
  woodcut 
  149. 
  

  

  Ornithocheirns 
  curtus 
  (Owen). 
  Distal 
  end 
  of 
  tibia. 
  

   Rep. 
  Lias 
  Form. 
  (Mou. 
  Pal. 
  Soc. 
  1870) 
  pt. 
  ii, 
  p. 
  52, 
  pi. 
  xix. 
  figs. 
  8, 
  9. 
  

  

  OrnithocJieinis 
  diomeclius 
  (Owen). 
  Distal 
  end 
  of 
  ulnar 
  

   metacarpal. 
  

   Brit. 
  Foss. 
  Mam. 
  and 
  Birds 
  (184G), 
  p. 
  545, 
  woodcut 
  230. 
  

  

  Urnithocheirus 
  nobilis 
  (Owen). 
  Portion 
  of 
  wing-plialange, 
  

  

  ? 
  ulna. 
  

  

  Rep. 
  Lias 
  Form. 
  (Mon. 
  Pal. 
  Soc. 
  1870) 
  pt. 
  ii. 
  descr. 
  to 
  pi. 
  xix. 
  fig. 
  10. 
  

  

  Tiicse 
  species, 
  founded 
  on 
  fragments 
  of 
  bones, 
  must 
  for 
  

   the 
  present 
  remain 
  in 
  the 
  genus 
  Ornithocheirus, 
  but 
  for 
  no 
  

   other 
  reason 
  than 
  that 
  they 
  have 
  been 
  placed 
  there, 
  for 
  tlie 
  

   characters 
  of 
  the 
  bones 
  belonging 
  to 
  the 
  genus 
  (JriiHhocltcirtiS 
  

   are 
  absolutely 
  unknown. 
  

  

  The 
  Vertebral 
  Column. 
  

  

  In 
  regard 
  to 
  the 
  bones 
  of 
  the 
  vertebral 
  column, 
  there 
  is 
  

   not 
  much 
  in 
  the 
  Cambridge 
  Greensand 
  specimens, 
  by 
  reason 
  

   of 
  their 
  fragmentary 
  and 
  worn 
  condition 
  and 
  their 
  non- 
  

   association 
  with 
  parts 
  known 
  to 
  belong 
  to 
  given 
  species, 
  to 
  

   help 
  one 
  in 
  classification. 
  Some 
  of 
  the 
  cervicals'are 
  fairly 
  

   perfect. 
  Seeley 
  * 
  denotes 
  two 
  groups 
  : 
  — 
  

  

  (I.) 
  Narrow 
  neural 
  arch 
  with 
  high 
  neural 
  spine, 
  pneu- 
  

   matic 
  foramen 
  oblique. 
  Ventral 
  face 
  of 
  centrum 
  

   oblong 
  and 
  flattened. 
  

  

  He 
  gives 
  as 
  example 
  that 
  figured 
  by 
  Owen 
  f 
  as 
  belonging 
  

   to 
  Pterodactylus 
  sinius. 
  

  

  (II.) 
  Wide 
  neural 
  arch, 
  pneumatic 
  foramen 
  horizontal. 
  

   Side 
  of 
  centrum 
  makes 
  a 
  right 
  angle 
  witii 
  the 
  

   base 
  (p. 
  (iS). 
  Ventral 
  surface 
  convex. 
  

  

  Example 
  given, 
  Pterodactylus 
  simus 
  (Owen) 
  J. 
  

  

  * 
  II. 
  G. 
  Seeley, 
  ' 
  Omithosauria,' 
  1870, 
  p. 
  66. 
  

  

  t 
  11. 
  Owen, 
  Rep. 
  Cret. 
  Form. 
  (Mon. 
  Pal. 
  Soc. 
  1861), 
  Suppl. 
  iii. 
  pi. 
  ii. 
  

   fig. 
  4. 
  

  

  \ 
  Id. 
  ibid. 
  (Mon. 
  l*al. 
  Sue. 
  1859), 
  Suppl. 
  i. 
  pi. 
  ii. 
  fig. 
  1. 
  

  

  