﻿NIAGARA 
  FALLS 
  AND 
  VICINITY 
  I39 
  

  

  Genus 
  chonophyllum 
  Edwards 
  & 
  Haime 
  

  

  [Ety.-.xovo?, 
  a 
  funnel; 
  (pukXov, 
  a 
  leaf 
  (septum) 
  ] 
  

  

  (1850. 
  British 
  fossil 
  corals, 
  p. 
  69) 
  

  

  Corallum 
  simple, 
  chiefly 
  consisting 
  of 
  a 
  series 
  of 
  funnel-shaped 
  

   tabulae, 
  set 
  one 
  into 
  the 
  other. 
  On 
  the 
  surfaces 
  of 
  these, 
  equally 
  

   developed 
  septal 
  radii 
  extend 
  from 
  center 
  to 
  circumference; 
  no 
  wahs 
  

   or 
  columella. 
  

  

  Chonophyllum 
  niagarense 
  Hall 
  (Fig. 
  32) 
  

   (1852. 
  Pal.N. 
  F. 
  2:114, 
  pi. 
  32) 
  

  

  Distinguishing 
  characters. 
  Irregularly 
  

   cylindric, 
  elongated 
  or 
  subturbinate 
  form, 
  

   more 
  or 
  less 
  expanding" 
  above; 
  deep 
  and 
  

   regularly 
  concave 
  calyx; 
  thin 
  denticulate 
  

   septal 
  ridges, 
  which 
  are 
  separated 
  by 
  a 
  

   space 
  equal 
  to 
  their 
  width; 
  rough 
  external 
  

   surface 
  of 
  weathered 
  specimens. 
  „. 
  „„^. 
  , 
  „ 
  

  

  i- 
  Fig. 
  32 
  Chonophyllum 
  ruagarense 
  

  

  H-,1 
  > 
  r 
  1 
  1 
  • 
  i.1 
  1 
  J. 
  I 
  ■"'itli 
  enlargement 
  of 
  interior 
  of 
  

  

  itherto 
  found 
  only 
  m 
  the 
  lower 
  part 
  of 
  caiyx 
  

  

  the 
  Lockport 
  limestone 
  at 
  Lockport, 
  but 
  probably 
  also 
  occuring 
  at 
  

  

  Niagara. 
  

  

  Genus 
  diplophyllum 
  Hall 
  

  

  [Ety. 
  : 
  di~X6o<; 
  , 
  double; 
  (puXXov, 
  septum] 
  

  

  (1852. 
  Pal. 
  N. 
  Y. 
  2:115) 
  

  

  Corallum 
  simple 
  and 
  branching, 
  or 
  forming 
  compound 
  masses 
  of 
  

   loosely 
  aggregated 
  corallites 
  which 
  are 
  cylindric, 
  consisting 
  of 
  two 
  

   distinct 
  parts 
  separated 
  by 
  an 
  accessory 
  wall, 
  the 
  inner 
  transversely 
  

   septate, 
  the 
  outer 
  with 
  fine 
  transverse 
  dissepiments 
  uniting 
  the 
  septa 
  

   which 
  are 
  continuous 
  to 
  the 
  center. 
  Calyxes 
  deeply 
  concave 
  in 
  the 
  

   center, 
  and 
  separated 
  from 
  the 
  outer 
  portion 
  by 
  a 
  distinct 
  rim. 
  

  

  Diplophyllum 
  caespitosum 
  Hall 
  (Fig. 
  2>2)) 
  (1852. 
  Pal 
  N. 
  Y. 
  

   2:116, 
  pi. 
  33) 
  

  

  Distinguishing 
  characters. 
  Subturbinate 
  young, 
  and 
  cylindric 
  

   adult 
  corallites, 
  which 
  coalesce 
  at 
  intervals 
  and 
  increase 
  by 
  lateral 
  

   budding; 
  cespitose 
  or 
  aggregated 
  into 
  large 
  masses 
  which 
  often 
  

   grow 
  from 
  a 
  single 
  base; 
  strongly 
  costate 
  exterior; 
  numerous 
  thin 
  

   septa, 
  all 
  of 
  which 
  reach 
  the 
  center. 
  

  

  