﻿AND 
  AVES 
  OF 
  NORTH 
  AMERICA. 
  59 
  

  

  BELODON 
  CAROLINENSIS, 
  Emmons, 
  Cope. 
  

  

  Proceed. 
  Ac. 
  Nat. 
  ScL, 
  18CG, 
  249. 
  Rutiodon 
  {Rhytidodon) 
  carolinensis 
  Emmons' 
  N. 
  Amer. 
  Geology, 
  p. 
  82. 
  

   Geol. 
  Surv. 
  North 
  Carolina. 
  Palaeosaurus 
  suleatus, 
  Emmons 
  loc. 
  cit. 
  (posterior 
  maxillary 
  teeth), 
  Fig. 
  Emmons 
  

   Manual 
  of 
  Geology, 
  p. 
  179. 
  Centemodon 
  suleatus, 
  Lea. 
  Proceed 
  Ac. 
  Nat. 
  Sci., 
  Phila, 
  1856, 
  78. 
  Cope, 
  1868, 
  221. 
  

   f 
  Omosaur 
  us 
  per 
  plexus, 
  Leidy, 
  Proceed. 
  Ac. 
  N. 
  Sci., 
  Phil., 
  1856, 
  256. 
  

  

  This 
  reptile 
  I 
  find 
  on 
  examination 
  of 
  the 
  type 
  specimen 
  to 
  helong 
  here. 
  Teeth 
  of 
  the 
  same 
  are 
  in 
  Wheatley's 
  

   collection 
  at 
  Phcenixville. 
  I 
  do 
  not 
  consider 
  that 
  any 
  ground 
  of 
  specific 
  distinction 
  between 
  this 
  animal 
  and 
  the 
  C. 
  

   stdcatus 
  has 
  been 
  pointed 
  out, 
  but 
  leave 
  the 
  discussion 
  of 
  the 
  relations 
  of 
  these 
  Triassic 
  forms 
  for 
  a 
  future 
  essay. 
  

  

  Lea 
  has 
  called 
  my 
  attention 
  to 
  the 
  fact 
  that 
  through 
  some 
  error 
  in 
  reading 
  the 
  scale, 
  the 
  measurements 
  of 
  the 
  

   type 
  tooth 
  published 
  are 
  double 
  the 
  correct 
  ones. 
  The 
  specimen 
  consist 
  of 
  the 
  distal 
  half 
  of 
  a 
  slightly 
  curved 
  conic 
  

   tooth, 
  and 
  does 
  not 
  display 
  any 
  pulp 
  cavity; 
  the 
  allusion 
  to 
  this 
  in 
  the 
  original 
  description 
  having 
  reference 
  to 
  frac- 
  

   ture. 
  The 
  tooth 
  cannot 
  be 
  called 
  sulcate, 
  but 
  is 
  rather 
  weakly 
  ridged 
  or 
  fluted. 
  The 
  original 
  description" 
  may 
  

   therefore 
  be 
  amended 
  to 
  read 
  thus: 
  

  

  Tooth 
  slightly 
  curved, 
  with 
  low 
  trenchant 
  edges, 
  rounded 
  on 
  the 
  exposed 
  face, 
  openly 
  fluted 
  on 
  the 
  lower 
  

   (median) 
  portion 
  near 
  the 
  fracture, 
  covered 
  with 
  very 
  minute 
  distinct 
  striae 
  from 
  the 
  point 
  to 
  the 
  base, 
  which 
  striae 
  

   cross 
  to 
  the 
  flutings 
  in 
  oblique 
  lines. 
  Length, 
  eight-twentieths 
  of 
  an 
  inch 
  ; 
  greatest 
  breadth, 
  two-twentieths 
  ; 
  pulp 
  

   cavity 
  minute 
  or 
  none. 
  

  

  The 
  enamel 
  of 
  the 
  teeth 
  of 
  B. 
  carolinensis 
  is 
  rarely 
  preserved; 
  when 
  this 
  is 
  the 
  case 
  its 
  stria?, 
  fluting, 
  etc., 
  are 
  

   as 
  ascribed 
  in 
  C. 
  suleatus. 
  

  

  Coal 
  Measures 
  of 
  the 
  Keuper 
  Trias. 
  Chatham 
  Co., 
  N. 
  Carolina. 
  

  

  BELODON 
  PRISCUS, 
  Leidy. 
  

  

  Palmosaurus 
  carolinensis, 
  Emmons, 
  Geological 
  Survey 
  N. 
  Ca., 
  1856, 
  p. 
  80. 
  N. 
  Amer. 
  Geology, 
  1857, 
  86, 
  figs. 
  57-8 
  

   60. 
  nee 
  Rhytidodon 
  carolinensis 
  supra. 
  ? 
  Compsosaurus 
  priscus, 
  Leidy, 
  Proc. 
  Acad. 
  Nat. 
  Sci., 
  Phila., 
  1856, 
  165. 
  

   Clepsysaurus 
  pennsylvanicus, 
  "Lea," 
  Emmons 
  in 
  parte, 
  Geol. 
  Survey 
  N. 
  Carolina, 
  1856; 
  North 
  Amer. 
  Geology, 
  1857, 
  

   pp. 
  67-71-3; 
  figs. 
  37 
  to 
  50 
  nee 
  Leaii. 
  

  

  Represented 
  by 
  numerous 
  specimens 
  from 
  the 
  Triassic 
  of 
  Chatham 
  and 
  Montgomery 
  counties, 
  N. 
  Carolina. 
  Teeth 
  

   not 
  fluted; 
  caudal 
  vertebras 
  with 
  articular 
  faces 
  broad 
  as 
  long, 
  and 
  centrum 
  little 
  compressed. 
  Size 
  medium. 
  

  

  BELODON 
  LEAII, 
  Emmons. 
  

  

  Glepsisaurus 
  leaii, 
  Emmons, 
  Geol. 
  Survey 
  N. 
  Ca., 
  1856; 
  N. 
  Amer. 
  Geology, 
  1857, 
  p. 
  79, 
  fig. 
  51, 
  PI. 
  8, 
  figs. 
  1-4. 
  

  

  Emmons 
  states 
  that 
  this 
  species 
  is 
  smaller 
  than 
  the 
  last, 
  and 
  that 
  the 
  centrum 
  is 
  longer 
  than 
  broad. 
  Cervical 
  

   vertebras 
  short, 
  compressed, 
  extremities 
  strongly 
  concave. 
  The 
  Trias 
  of 
  Dan 
  River, 
  N. 
  Carolina. 
  

  

  BELODON 
  LEPTURUS, 
  Cope. 
  

  

  Spec. 
  nov. 
  

  

  Represented 
  by 
  wholes 
  or 
  parts 
  of 
  fourteen 
  vertebras; 
  a 
  left 
  femur 
  and 
  fibula; 
  a 
  phalange; 
  imperfect 
  ilium 
  and 
  

   ischium 
  attached; 
  with 
  numerous 
  ribs 
  and 
  dermal 
  bones, 
  from 
  several 
  blocks 
  of 
  bituminous 
  shale 
  from 
  the 
  bone 
  bed 
  in 
  

   the 
  tunnel 
  at 
  Phcenixville, 
  Penna. 
  

  

  The 
  fragments 
  indicate 
  the 
  largest 
  species 
  of 
  the 
  genus, 
  one 
  of 
  the 
  vertebrae 
  with 
  spine, 
  measuring 
  eight 
  inches 
  

   in 
  total 
  elevation. 
  The 
  centra 
  of 
  the 
  dorsals 
  are 
  wider 
  at 
  the 
  articular 
  faces 
  than 
  long; 
  in 
  the 
  other 
  two 
  species 
  the 
  

   length 
  is 
  greater 
  than 
  or 
  equal 
  to 
  the 
  width. 
  The 
  caudal 
  vertebras 
  are 
  much 
  compressed, 
  not 
  subcylindric 
  as 
  in 
  B. 
  

   priscus. 
  The 
  femur 
  restored 
  measures 
  thirteen 
  inches 
  in 
  length. 
  Ischium 
  sending 
  a 
  process 
  forwards 
  bounding 
  the 
  

   acetabulum 
  below 
  in 
  part, 
  largely 
  excavated 
  by 
  the 
  obturator 
  foramen, 
  which 
  is 
  very 
  externally 
  situated. 
  

  

  The 
  bones 
  were 
  enclosed 
  in 
  five 
  slabs 
  of 
  black, 
  bituminous 
  argillaceous 
  rock 
  of 
  the 
  Phcenixville 
  section, 
  and 
  they 
  

   were 
  taken 
  out 
  from 
  the 
  same 
  immediate 
  proximity 
  by 
  the 
  workmen 
  engaged 
  in 
  the 
  work 
  in 
  the 
  tunnel. 
  One 
  slab 
  

   contained 
  three 
  dorsal 
  and 
  two 
  caudal 
  vertebras 
  with 
  chevron 
  bone. 
  The 
  second, 
  one 
  and 
  part 
  of 
  another 
  dorsal 
  ver- 
  

  

  