﻿PLATE 
  XVII. 
  

  

  Vaquekos 
  (Lower 
  Miocene) 
  Pelecypoda 
  and 
  Brachiopoda. 
  

  

  (Unless 
  otherwise 
  indicated 
  all 
  figures 
  are 
  natural 
  size.) 
  

  

  Fig. 
  1. 
  Pecten 
  (Pecten) 
  vanvlecki 
  Arnold. 
  U.S.N.M. 
  165305. 
  Type. 
  Right 
  valve; 
  

   altitude 
  64 
  mm. 
  View 
  of 
  exterior. 
  Mouth 
  of 
  Ballard 
  Canyon, 
  2 
  miles 
  

   south 
  of 
  Santa 
  Ynez 
  (4478). 
  Characteristic 
  of 
  this 
  horizon. 
  

  

  Fig. 
  2. 
  Pecten 
  (Pecten) 
  vanvlecki 
  Arnold. 
  U.S.N.M. 
  165306. 
  Paratype. 
  Left 
  valve: 
  

   altitude 
  72 
  mm. 
  View 
  of 
  exterior. 
  Mouth 
  of 
  Ballard 
  Canyon, 
  2 
  miles 
  

   south 
  of 
  Santa 
  Ynez 
  (4478). 
  Characteristic 
  of 
  this 
  horizon. 
  

  

  Fig. 
  3. 
  Pecten 
  (Chlamys) 
  sespeensis 
  var. 
  hydei 
  Arnold. 
  U.S.N.M. 
  165308. 
  Left 
  valve; 
  

   altitude 
  60 
  mm. 
  View 
  of 
  exterior. 
  Mouth 
  of 
  Ballard 
  Canyon, 
  2 
  miles 
  

   south 
  of 
  Santa 
  Ynez 
  (4478). 
  Characteristic 
  of 
  this 
  horizon. 
  

  

  Fig. 
  4a. 
  Terebratalia 
  kennedyi 
  Dall. 
  U.S.N.M. 
  165325. 
  Type. 
  Ventral 
  valve; 
  alti- 
  

   tude 
  26 
  mm. 
  View 
  of 
  exterior. 
  Lime 
  quarry 
  5 
  miles 
  southwest 
  of 
  

   Lompoc 
  (4521). 
  Characteristic 
  of 
  this 
  horizon. 
  

  

  Fig. 
  46. 
  Dorsal 
  valve 
  of 
  same 
  species; 
  altitude 
  of 
  fragment 
  18 
  mm. 
  View 
  of 
  exte- 
  

   rior. 
  

  

  Fig. 
  4c. 
  Dorsal 
  valve 
  of 
  same 
  species; 
  altitude 
  19 
  mm. 
  View 
  of 
  exterior. 
  

  

  Fig. 
  4d. 
  Ventral 
  valve 
  of 
  same 
  species; 
  altitude 
  28 
  mm. 
  View 
  of 
  exterior. 
  

  

  136 
  

  

  