﻿Report 
  of 
  the 
  State 
  Geologist. 
  937 
  

  

  PR^EGRACILIS, 
  Fenestella 
  — 
  very 
  slender 
  or 
  narrow, 
  i. 
  e., 
  the 
  branches. 
  

   PROCERITAS, 
  Fenestella 
  — 
  should 
  have 
  beenprocera, 
  long; 
  referring 
  

   to 
  the 
  elongate 
  dissepiments. 
  

  

  PROLIFERA, 
  Acrogenia 
  — 
  bearing 
  offspring; 
  referring 
  to 
  the 
  peculiar 
  

   manner 
  of 
  growth, 
  each 
  branch 
  having 
  two 
  others 
  proceeding 
  from 
  

   its 
  summit. 
  

  

  PROMINEISrS, 
  Fenestella 
  — 
  prominent; 
  from 
  the 
  prominent 
  peristomes. 
  

   PROPRIA, 
  Fenestella 
  — 
  peculiar, 
  not 
  common 
  ; 
  the 
  appearance 
  of 
  the 
  

  

  frond 
  is 
  strikingly 
  different 
  from 
  that 
  of 
  any 
  other 
  species. 
  

   PULVERATA, 
  Fenestella 
  — 
  covered 
  with 
  dust 
  ; 
  the 
  numerous 
  granules 
  

  

  of 
  the 
  non-celluliferous 
  face 
  gives 
  a 
  sanded 
  or 
  dusty 
  appearance 
  to 
  the 
  

  

  branch. 
  

  

  PUMICOSA, 
  Fenestella 
  — 
  full 
  of 
  holes, 
  like 
  a 
  pumice-stone; 
  from 
  the 
  

   cell 
  apertures 
  and 
  numerous 
  pores 
  of 
  the 
  non-celluliferous 
  face. 
  

  

  PYRIFORMIs, 
  Pileotrypa 
  — 
  pear-shaped; 
  the 
  elongate 
  swelling 
  per- 
  

   istomes 
  are 
  usually 
  pear-shaped. 
  

  

  QUADRANGULARIS, 
  Polypora 
  — 
  quadrangular; 
  on 
  the 
  non-cellu- 
  

   liferous 
  face 
  the 
  carina 
  of 
  the 
  dissepiments 
  and 
  the 
  connecting 
  

   branches 
  give 
  to 
  the 
  fenestrules 
  the 
  appearance 
  of 
  being 
  surrounded 
  

   by 
  a 
  quadrangular 
  elevation. 
  

  

  QUADRULA, 
  Fenestella 
  — 
  a 
  little 
  square; 
  from 
  the 
  square 
  fenestrules. 
  

  

  RADIATA, 
  Paleschara 
  — 
  radiating; 
  the 
  cell 
  apertures 
  radiate 
  from 
  

   the 
  maculae. 
  

  

  RAMOSA, 
  Lichenalia 
  — 
  ramose; 
  from 
  the 
  form 
  of 
  the 
  frond. 
  

  

  RECTA, 
  Stictopora 
  — 
  straight; 
  from 
  the 
  form 
  of 
  the 
  species. 
  

  

  RECTALINEA, 
  Stictopora 
  — 
  straight 
  lines; 
  from 
  the 
  disposition 
  of 
  

   the 
  cell 
  apertures 
  in 
  straight 
  parallel 
  lines. 
  

  

  RECUBANS, 
  Stictopora 
  — 
  reclining; 
  from 
  the 
  almost 
  horizontal 
  posi- 
  

   tion 
  of 
  the 
  cell 
  tubes. 
  

  

  REGULARIS, 
  Orthopora 
  — 
  regular; 
  from 
  the 
  regular 
  disposition 
  of 
  

   the 
  cell 
  apertures 
  in 
  parallel 
  longitudinal 
  rows. 
  

  

  RETICULATA, 
  Orthopora 
  — 
  reticulate, 
  netted; 
  from 
  the 
  reticulate 
  

   appearance 
  of 
  the 
  surface. 
  

  

  RETIFORMIS, 
  Ptilodictya 
  — 
  like 
  a 
  net; 
  from 
  the 
  appearance 
  of 
  the 
  

   surface. 
  

  

  RECTIFORMIS, 
  Reteporina 
  — 
  from 
  the 
  appearance 
  of 
  the 
  frond. 
  

  

  RHOMBIFERA, 
  Reteporina 
  — 
  from 
  the 
  rhomboidal 
  form 
  of 
  the 
  

   fenestrules. 
  

  

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