﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL, 
  67, 
  ART. 
  21 
  PL. 
  20 
  

  

  '.WWW! 
  

  

  |iii..**P 
  | 
  <iii 
  j 
  

  

  *\:: 
  

  

  

  ■ 
  

  

  .J- 
  

  

  10 
  II 
  12 
  13 
  

  

  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  

  

  For 
  explanation 
  of 
  platf 
  see 
  page 
  113 
  

  

  