﻿PLATE 
  XIII. 
  

   Knoxville 
  (Cretaceous) 
  and 
  Tejon 
  (Eocene) 
  Fossils. 
  

  

  i 
  I'nless 
  otherwise 
  indicated 
  all 
  figures 
  are 
  natural 
  size, 
  i 
  

  

  Fk 
  ;. 
  1. 
  Aucella 
  piochii 
  Gabb. 
  U.S.N.M. 
  30831. 
  Right 
  valve; 
  altitude 
  25 
  mm. 
  View 
  

   of 
  exterior. 
  Knoxville 
  (lower 
  Cretaceous) 
  formation, 
  East 
  Fork 
  Tepus- 
  

   quet 
  Creek 
  (4173). 
  Characteristic 
  of 
  the 
  lower 
  Cretaceous 
  throughout 
  

   the 
  Coast 
  Ranges. 
  

  

  Fig. 
  2. 
  Aucella 
  piochii 
  Gabb. 
  U.S.N.M. 
  30831. 
  Left 
  valve; 
  altitude 
  15 
  mm. 
  View 
  

   of 
  exterior, 
  X 
  2. 
  Same 
  locality 
  and 
  horizon 
  as 
  fig. 
  1. 
  

  

  Fk;. 
  3a. 
  Aucella 
  piochii 
  Gabb. 
  Left 
  valve; 
  altitude 
  27 
  mm. 
  View 
  of 
  exterior. 
  Bull. 
  

   U. 
  S. 
  Geol. 
  Survey 
  No. 
  133, 
  1895, 
  pi. 
  4, 
  fig. 
  6. 
  

  

  Fig. 
  36. 
  Exterior 
  of 
  right 
  valve 
  of 
  same 
  specimen. 
  Op. 
  cit., 
  pi. 
  4, 
  fig. 
  7. 
  

  

  Fig. 
  4. 
  Vcnericardia 
  planicosta 
  Lamarck, 
  U.S.N.M. 
  164973. 
  Left 
  valve: 
  longitude 
  84 
  

   mm. 
  Eocene, 
  Little 
  Falls, 
  Wash. 
  This 
  is 
  the 
  most 
  widespread 
  and 
  

   characteristic 
  Eocene 
  species 
  in 
  the 
  world. 
  

  

  Fig. 
  5a. 
  Turritella 
  (martinezensis 
  Gabb) 
  var. 
  f 
  lompocensis 
  Arnold. 
  Paratype. 
  Alti- 
  

   tude 
  of 
  fragment, 
  30 
  mm. 
  Back 
  view. 
  Same 
  locality 
  as 
  fig. 
  8. 
  

  

  Fio. 
  56. 
  Basal 
  view 
  of 
  same 
  specimen. 
  

  

  Fig. 
  6a. 
  Pecten 
  (Chlamys) 
  yneziana 
  Arnold. 
  U.S.N.M. 
  165313. 
  Type. 
  Right 
  valve; 
  

   altitude 
  64 
  mm. 
  View 
  of 
  exterior. 
  San 
  Julian 
  ranch 
  (4507). 
  Charac- 
  

   teristic 
  of 
  this 
  horizon. 
  

  

  Fk;. 
  66. 
  Same 
  species. 
  Length 
  of 
  hinge 
  of 
  right 
  valve 
  25 
  mm. 
  

  

  Fk;. 
  7. 
  Turritella 
  uvasana 
  Conrad. 
  L 
  T 
  .S.N.M. 
  165326. 
  Altitude 
  of 
  imperfect 
  specimen 
  

   68 
  mm. 
  Aperture 
  view. 
  San 
  Julian 
  ranch 
  (4507). 
  Characteristic 
  of 
  

   the 
  Eocene 
  throughout 
  the 
  Coast 
  Ranges. 
  

  

  Fio. 
  8. 
  Turritella 
  (martinezensis 
  Gabb) 
  var. 
  ? 
  lompocensis 
  Arnold. 
  L'.S.X.M. 
  165316. 
  

   Type. 
  Longitude 
  68 
  mm. 
  View 
  of 
  back. 
  Southwest 
  of 
  Lompoc 
  (4509). 
  

  

  128 
  

  

  