﻿PROCEEDINGS 
  OF 
  THE 
  UNITED 
  STATES 
  NATIONAL 
  MUSEUM 
  

  

  by 
  the 
  

  

  SMITHSONIAN 
  INSTITUTION 
  

   U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  Vol. 
  % 
  W.>hington: 
  1946 
  No. 
  3199 
  

  

  THE 
  OSTEOLOGY 
  OF 
  THE 
  FOSSIL 
  TURTLE 
  TESTUDO 
  

   PKAEEXTANS 
  LAMBE, 
  WITH 
  NOTES 
  ON 
  OTHER 
  

   SPECIES 
  OF 
  TESTUDO 
  FROM 
  THE 
  OLIGOCENE 
  OF 
  

   WYOMING 
  

  

  By 
  Charles 
  W. 
  Gilmore 
  * 
  

  

  Among 
  the 
  fossil 
  vertebrate 
  materials 
  collected 
  from 
  the 
  Oligocene 
  

   of 
  the 
  Indian 
  Creek 
  Basin 
  area 
  in 
  Wyoming 
  by 
  the 
  Smithsonian 
  

   Paleontological 
  Expeditions 
  of 
  1932 
  and 
  1942 
  were 
  six 
  well-preserved 
  

   specimens 
  of 
  the 
  land 
  tortoise 
  Testudo. 
  Interest 
  in 
  these 
  specimens 
  

   centei-s 
  primarily 
  in 
  the 
  fact 
  that 
  they 
  contribute 
  the 
  first 
  information 
  

   to 
  be 
  had 
  of 
  the 
  skull 
  and 
  internal 
  skeleton 
  of 
  Testudo 
  j^raeextans 
  

   Lambe, 
  as 
  well 
  as 
  illustrating 
  tlie 
  individual 
  variation 
  found 
  in 
  the 
  

   shell 
  structure 
  of 
  that 
  species. 
  Two 
  of 
  these 
  specimens 
  pertain 
  to 
  

   Testudo 
  laticunea 
  Cope, 
  this 
  being 
  the 
  first 
  time 
  this 
  species 
  has 
  been 
  

   recognized 
  in 
  this 
  area. 
  

  

  Family 
  TESTUDINIDAE 
  

  

  Genus 
  TESTUDO 
  Linnaeus 
  

  

  TESTUDO 
  PKAEEXTANS 
  Lambe 
  

  

  Plates 
  38-41; 
  Platk 
  44, 
  Fkjckk 
  2 
  

  

  Testudo 
  praeextana 
  Immbk, 
  Ottawa 
  Nat., 
  vol. 
  27, 
  j)!). 
  '>7 
  (W, 
  |)ls. 
  4, 
  !">, 
  1913. 
  — 
  Hay, 
  

   Carnegie 
  Inst. 
  Washington 
  Pul.i. 
  390, 
  p. 
  101, 
  1930. 
  

  

  Diagnosis. 
  — 
  The 
  cliaractcrs 
  that 
  at 
  tliis 
  time 
  appear 
  to 
  (iistiii^'uisii 
  

   Testudo 
  praeextans 
  arc 
  a.s 
  follows: 
  Cara{)ace 
  depressed, 
  with 
  Jhitteiied 
  

   toj) 
  in 
  the 
  vertebral 
  region; 
  prominent 
  epiplastnd 
  lip, 
  project 
  iiig 
  

   beyond 
  the 
  borders 
  of 
  the 
  curai)ace 
  and 
  with 
  j)arallel 
  sides; 
  sulci 
  

   usually 
  shallowly 
  impressed 
  and 
  usually 
  ending, 
  on 
  free 
  borders, 
  in 
  

  

  '.Mr. 
  fJilmorc 
  died 
  on 
  8vptomh«r 
  27, 
  104fi.— 
  Ki>. 
  

  

  873370— 
  IC 
  1 
  -'03 
  

  

  