﻿Report 
  of 
  the 
  State 
  Geologist, 
  929 
  

  

  CORONIS, 
  Fenestella 
  — 
  from 
  the 
  wide 
  carina? 
  or 
  crowns 
  of 
  the 
  cel- 
  

  

  luliferous 
  face 
  of 
  the 
  branches. 
  

   CORTICOSA, 
  Trematella 
  — 
  having 
  a 
  thick 
  bark; 
  from 
  the 
  appearance 
  

  

  of 
  the 
  surface 
  of 
  the 
  branches. 
  

  

  COSCINIFORMIS, 
  Ptilodictya 
  — 
  resembling 
  a 
  Coscinhvm. 
  

   CRASS 
  A, 
  Fistulipora 
  — 
  thick; 
  from 
  the 
  thick 
  frond. 
  

   CRATERIFORMIS, 
  Fenestella 
  — 
  from 
  the 
  form 
  of 
  the 
  frond. 
  

   CREBESCENS, 
  Polypora 
  — 
  to 
  grow 
  frequent; 
  from 
  the 
  rapid 
  increase 
  

   in 
  the 
  number 
  of 
  the 
  branches. 
  

  

  CREBRIPORA, 
  Fenestella 
  — 
  numerous 
  pores; 
  from 
  the 
  numerous 
  cell 
  

   apertures. 
  

  

  CRENULAT 
  A, 
  Stictopora 
  — 
  from 
  the 
  crenulated 
  margins 
  of 
  the 
  frond. 
  

  

  CRIBROSA, 
  Hemitrypa 
  — 
  from 
  the 
  numerous 
  circular 
  fenestrules 
  of 
  

  

  the 
  hemitrypic 
  face, 
  giving 
  to 
  that 
  face 
  of 
  the 
  frond 
  a 
  sieve-like 
  

  

  appearance. 
  

  

  CRIST 
  ATA, 
  Phractopora 
  — 
  crested; 
  from 
  the 
  sharp 
  angular 
  eleva- 
  

   tions 
  or 
  crests 
  of 
  the 
  frond. 
  

  

  CULTELLATA, 
  Lichenalia 
  — 
  edged 
  or 
  sharp, 
  like 
  a 
  knife; 
  from 
  the 
  

   sharp 
  elevations 
  extending 
  from 
  the 
  centers 
  of 
  the 
  monticulae. 
  

  

  CULTR 
  ATA, 
  Fenestella 
  — 
  from 
  the 
  knife-like 
  carina? 
  of 
  the 
  cellulif 
  - 
  

  

  erous 
  face. 
  

   CUR 
  VAT 
  A, 
  Bactropora 
  — 
  from 
  the 
  curved 
  frond. 
  

   CURVIJUNCTURA, 
  Fenestella 
  — 
  from 
  the 
  curved 
  dissepiments. 
  

   DECIPIENS, 
  Fistulipora 
  — 
  deceiving; 
  when 
  the 
  frond 
  is 
  perfectly 
  

  

  preserved, 
  it 
  would 
  easily 
  be 
  mistaken 
  for 
  some 
  form 
  of 
  Paleschara, 
  

  

  but 
  when 
  slightly 
  worn 
  or 
  macerated 
  the 
  characteristics 
  of 
  the 
  genus 
  

  

  Fistulipora 
  are 
  plainly 
  seen. 
  

   DENSA, 
  Monotrypella 
  from 
  the 
  crowded 
  cell 
  apertures. 
  

   DENTICUL 
  ATA, 
  Fenestella 
  — 
  from 
  the 
  numerous 
  radial 
  denticles. 
  

   DENTICULATA, 
  Pileotrypa 
  — 
  from 
  the 
  two 
  prominent 
  projections 
  

  

  from 
  the 
  peristome. 
  

  

  DEPRESSA, 
  Fenestella 
  — 
  from 
  the 
  decided 
  depression 
  of 
  the 
  dissepi- 
  

   ments 
  on 
  both 
  faces 
  of 
  the 
  frond. 
  

  

  DICHOTOMA, 
  Diamesopora 
  — 
  from 
  the 
  frequent 
  bifurcations. 
  

  

  DIFFERENS, 
  Fenestella 
  — 
  from 
  the 
  fact 
  that 
  the 
  frond 
  presents 
  a 
  

   varying 
  appearance 
  according 
  to 
  the 
  different 
  degrees 
  of 
  weathering. 
  

  

  DIGIT 
  ATA, 
  Fistulipora 
  — 
  from 
  the 
  digitate 
  form 
  of 
  the 
  frond. 
  

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