﻿CYCLOSTOMATOUS 
  BEYOZOA 
  CANU 
  AND 
  BASSLER 
  

  

  59 
  

  

  understand 
  the 
  mode 
  of 
  attachment 
  and 
  how 
  the 
  colony 
  is 
  able 
  to 
  

   retain 
  its 
  equilibrium. 
  The 
  tubes 
  are 
  cylindrical, 
  with 
  dorsal 
  gem- 
  

   mation. 
  The 
  fascicles 
  are 
  bi-or 
  triserial. 
  The 
  ovicell 
  is 
  always 
  

   placed 
  on 
  an 
  exterior 
  flabelliform 
  subcolony 
  in 
  the 
  neighborhood 
  of 
  

   the 
  margin 
  of 
  growth. 
  The 
  zoarial 
  pentagons 
  figured 
  by 
  D'Orbigny 
  

   are 
  exaggerated; 
  in 
  reality 
  the 
  central 
  subcolonies 
  are 
  irregularly 
  

   orbicular. 
  

  

  Occurrence. 
  — 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix 
  (Vaud), 
  

   Switzerland. 
  

  

  Plesioty 
  pes. 
  —Cat. 
  No. 
  69907, 
  U.S.N.M. 
  

  

  Fio. 
  VS.— 
  Radiofascigera 
  ramosa 
  D'Orbigny, 
  1853. 
  A. 
  Longitudinal 
  section, 
  X 
  16. 
  The 
  tubes 
  are 
  thick- 
  

   ened 
  at 
  their 
  extremity. 
  B. 
  Transverse 
  section, 
  X 
  16. 
  Lower 
  Cretaceous 
  (Valangian): 
  Sainte-Croix, 
  

   Switzerland 
  

  

  Genus 
  RADIOFASCIGERA 
  D'Orbigny, 
  1853 
  

  

  1853. 
  Radiofascigera 
  D'Orbigny, 
  Paleontologie 
  francaise, 
  Terrain 
  CrStace, 
  vol 
  

   5, 
  p. 
  691. 
  

  

  Theonoidae 
  of 
  subcylindrical 
  branches 
  formed 
  of 
  numerous 
  con- 
  

   fluent 
  colonies 
  of 
  Actinopora. 
  

  

  Genotype. 
  — 
  Radiofascigera 
  ramosa 
  D'Orbigny, 
  1853. 
  Cretaceous. 
  

  

  