﻿CAlSnfON 
  FERRY 
  FOSSIL 
  VERTEBRATES 
  — 
  ^WHITE 
  401 
  

  

  solidated. 
  In 
  color 
  and 
  texture 
  they 
  very 
  closely 
  resemble 
  the 
  Har- 
  

   rison 
  beds 
  of 
  western 
  Nebraska 
  and 
  eastern 
  Wyoming. 
  Also 
  like 
  the 
  

   Oligocene, 
  the 
  stream 
  gravels 
  occasionally 
  encountered 
  are 
  composed 
  

   largely 
  of 
  the 
  angular 
  fragments 
  of 
  the 
  Proterozoic 
  and 
  Paleozoic 
  

   sediments 
  from 
  the 
  adjacent 
  mountains. 
  Also, 
  basaltic, 
  volcanic 
  

   bombs 
  from 
  8 
  inches 
  to 
  1 
  foot 
  in 
  diameter 
  are 
  occasionally 
  encountered, 
  

   but 
  they 
  are 
  not 
  necessarily 
  associated 
  with 
  the 
  stream 
  gravels. 
  

   Although 
  the 
  Oligocene 
  and 
  Miocene 
  sediments 
  are 
  quite 
  different 
  

   Uthologically, 
  at 
  only 
  one 
  place, 
  in 
  a 
  recent 
  road 
  cut, 
  was 
  the 
  contact 
  

   between 
  the 
  two 
  observed. 
  It 
  was 
  not 
  possible 
  to 
  detect 
  an 
  angular 
  

   unconformity 
  either 
  at 
  this 
  place 
  or 
  by 
  measuring 
  the 
  angle 
  of 
  dip 
  of 
  

   the 
  beds. 
  

  

  The 
  following 
  section 
  was 
  measured 
  by 
  Mr. 
  Harrup 
  at 
  the 
  north 
  

   end 
  of 
  the 
  reservoir 
  area 
  near 
  the 
  present 
  construction 
  camp; 
  here, 
  

   both 
  the 
  Oligocene 
  and 
  Miocene 
  strata 
  dip 
  east 
  50° 
  north 
  at 
  an 
  angle 
  

   of 
  6° 
  from 
  the 
  horizontal: 
  

  

  Fine-grained, 
  buff 
  sandstone, 
  often 
  weathering 
  into 
  vertical 
  cliffs 
  ; 
  stream 
  gravels 
  

   common; 
  occasional 
  volcanic 
  bombs. 
  Arikareean 
  fossils. 
  — 
  150 
  feet. 
  

  

  Light 
  gray 
  to 
  buff 
  clayey 
  ash 
  grading 
  to 
  nearly 
  pure 
  ash 
  at 
  top; 
  lenses 
  of 
  stream 
  

   gravels 
  common. 
  Orellan 
  fossils 
  at 
  the 
  bottom. 
  — 
  140 
  feet. 
  

  

  Dark 
  gypsiferous 
  clays, 
  with 
  iron 
  nodules, 
  alternating 
  with 
  lighter 
  bands. 
  No 
  

   identifiable 
  fossils. 
  — 
  110 
  feet. 
  

  

  Light 
  buff 
  clayey 
  ash 
  with 
  Chadronian 
  (Pipestone 
  Springs) 
  fossils 
  at 
  the 
  top. 
  — 
  

   130 
  feet. 
  

  

  Class 
  REPTILIA 
  

  

  Order 
  SQUAMATA 
  

  

  Suborder 
  SAURIA 
  

  

  Family 
  Anguidae 
  

  

  Glyptosaurus 
  cf. 
  montxinus 
  Douglass 
  

  

  USNM 
  19081, 
  portion 
  of 
  right 
  frontal 
  with 
  scutes 
  and 
  portion 
  

   of 
  left 
  dentary 
  with 
  six 
  teeth, 
  from 
  the 
  Lower 
  Oligocene 
  of 
  locality 
  

   No. 
  24BW18. 
  

  

  The 
  limited 
  material 
  of 
  this 
  form 
  does 
  not 
  permit 
  any 
  additions 
  to 
  

   Gilmore's 
  (1928, 
  p. 
  115) 
  discussion 
  of 
  the 
  species. 
  

  

  Peltosaurus 
  sp. 
  

  

  USNM 
  19085, 
  a 
  maxillary 
  fragment; 
  and 
  USNM 
  19084, 
  a 
  dentary 
  

   fragment; 
  both 
  from 
  the 
  Middle 
  Oligocene 
  at 
  Canyon 
  Ferry. 
  These 
  

   specimens 
  appear 
  to 
  be 
  referable 
  to 
  this 
  genus 
  but 
  contribute 
  nothing 
  

   to 
  our 
  knowledge 
  of 
  the 
  group. 
  

  

  