﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  21 
  PL. 
  6 
  

  

  w: 
  

  

  • 
  »- 
  

  

  

  -$rjKS 
  Hi 
  \W^V 
  ; 
  . 
  

  

  

  "T-^v 
  

  

  Lower 
  Cretaceous 
  Cyclostomatous 
  Bryozoa 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  99 
  

  

  