﻿Report 
  of 
  the 
  State 
  Geologist, 
  935 
  

  

  OBLIQUAPORA, 
  Fenestella 
  — 
  from 
  the 
  oblique 
  cell 
  apertures. 
  

  

  OBSOLETA, 
  Stictopora-— 
  obsolete; 
  from 
  the 
  fact 
  that 
  the 
  greater 
  

   portion 
  of 
  the 
  specimens 
  at 
  first 
  observed 
  were 
  much 
  worn 
  or 
  mac- 
  

   erated, 
  and 
  the 
  cell 
  apertures 
  were 
  nearly 
  or 
  quite 
  obsolete. 
  

  

  OCCUL 
  TA, 
  Fenestella 
  - 
  hidden; 
  from 
  the 
  fact 
  that 
  the 
  cell 
  apertures 
  

   are 
  concealed 
  or 
  hidden 
  by 
  the 
  prominent 
  carina. 
  

  

  OCULIFERA, 
  Callotrypa 
  — 
  bearing 
  lips; 
  from 
  the 
  prominent 
  

   peristomes. 
  

  

  OMNTPORATA, 
  Fenestella 
  — 
  all 
  pores; 
  from 
  the 
  fact 
  that 
  in 
  addition 
  

   to 
  the 
  pores 
  or 
  cell 
  apertures 
  of 
  the 
  celluliferous 
  face, 
  there 
  are 
  

   numerous 
  pores 
  on 
  the 
  non-celluliferous 
  face. 
  

  

  OPERCULATA, 
  Fenestella 
  — 
  from 
  the 
  conspicuous 
  opercula 
  of 
  the 
  

   cell 
  apertures. 
  

  

  OPPLETA, 
  Fenestella 
  — 
  [filled 
  completely, 
  i. 
  e., 
  the 
  surface 
  hj 
  the 
  

   ceU 
  apertures. 
  

  

  ORBIPORA, 
  Orthopora 
  — 
  from 
  the 
  circular 
  form 
  of 
  the 
  cell 
  apertures. 
  

  

  ORNATA, 
  Orthopora 
  — 
  from 
  the 
  ornamentation 
  of 
  the 
  surface. 
  

  

  OVATA, 
  Stictopora 
  — 
  from 
  the 
  ovate 
  cell 
  apertures. 
  

  

  OVATIPORA, 
  Stictopora 
  — 
  from 
  the 
  ovate 
  cell 
  apertures. 
  

  

  P 
  ALANS, 
  Fenestella 
  — 
  straggling; 
  from 
  the 
  manner 
  of 
  growth 
  of 
  

   the 
  frond. 
  

  

  PALIFORMIS, 
  Glossotrypa 
  — 
  spade-shaped; 
  from 
  the 
  form 
  of 
  the 
  

   cell 
  apertures. 
  

  

  PALMIPES, 
  Stictopora 
  — 
  web-footed; 
  from 
  the 
  appearance 
  of 
  the 
  

   frond. 
  

  

  PAPILLOS 
  A, 
  Stictopora 
  — 
  from 
  the 
  papillose 
  appearance 
  of 
  the 
  cell 
  

   apertures. 
  

  

  PARALLELA, 
  Fenestella 
  — 
  the 
  branches 
  of 
  the 
  fronds 
  are 
  essentially 
  

   parallel. 
  

  

  PARALLELA, 
  Orthopora 
  — 
  the 
  cell 
  apertures 
  are 
  disposed 
  in 
  par- 
  

   allel 
  rows 
  both 
  transversely 
  and 
  longitudinally. 
  

  

  PARALLELA, 
  Ptilodictya 
  — 
  from 
  the 
  parallel 
  ridges 
  between 
  the 
  

   ranges 
  of 
  cell 
  apertures. 
  

  

  PARASITICA, 
  Fistulipora 
  — 
  from 
  the 
  very 
  thin 
  frond 
  growing 
  on 
  

   other 
  objects. 
  

  

  PARVICELLA, 
  Ceramopora 
  — 
  from 
  the 
  small 
  cells. 
  

  

  