﻿144 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Distinguishing 
  characters. 
  Corallites 
  in 
  juxtaposition 
  or 
  separated 
  

   by 
  cellular 
  interspaces; 
  larg-e 
  meshes 
  of 
  the 
  network 
  irregular, 
  

   greatly 
  varying 
  in 
  size; 
  corallites 
  oval 
  in 
  cross-section, 
  united 
  by 
  

   their 
  narrower 
  sides; 
  epitheca 
  with 
  fine 
  lines 
  of 
  growth 
  and 
  occa- 
  

   sionally 
  strong 
  wrinkles. 
  

  

  Found 
  in 
  the 
  Lockport 
  limestone 
  at 
  Lockport 
  (Hall), 
  and 
  

   Niagara. 
  When 
  silicified, 
  the 
  coral 
  may 
  be 
  well 
  preserved, 
  but 
  

   otherwise 
  it 
  is 
  usually 
  almost 
  destroyed 
  or 
  replaced 
  by 
  various 
  

  

  minerals. 
  

  

  Genus 
  heliolites 
  Guettard 
  

  

  [Ety. 
  :f;A£o?, 
  the 
  sun; 
  XiOo<;, 
  a 
  stone] 
  

  

  (1770. 
  Mem. 
  3:454) 
  

  

  Corallum 
  spheroidal, 
  pyriform, 
  hemispheric, 
  or 
  rarely 
  ramose. 
  

   Corallites 
  (macrocorallites) 
  cylindric, 
  comparatively 
  few 
  in 
  number 
  

  

  \ 
  

  

  ^^%^ 
  

  

  '■I 
  ■ 
  ■' 
  ^■' 
  I- 
  

  

  Fig. 
  40 
  Heliolites 
  elegans 
  with 
  enlargement 
  of 
  calyxes 
  

   and 
  longitudinal 
  section 
  

  

  and 
  furnished 
  with 
  12 
  lamellar 
  infoldings 
  of 
  the 
  wall, 
  or 
  pseudo- 
  

   septa. 
  Smaller 
  corallites 
  (microcorallites) 
  completely 
  investing 
  the 
  

   larger 
  ones, 
  more 
  or 
  less 
  regularly 
  polygonal 
  in 
  form, 
  with 
  distinct 
  

   walls, 
  completely 
  amalgamated 
  with 
  one 
  another 
  and 
  with 
  the 
  walls 
  

   of 
  the 
  larger 
  corallites. 
  Mural 
  pores 
  absent. 
  Both 
  kinds 
  of 
  coral- 
  

   Htes 
  with 
  tabulae, 
  most 
  numerous 
  in 
  the 
  smaller 
  corallites. 
  Base 
  

   of 
  corallum 
  covered 
  by 
  a 
  peritheca 
  showing 
  lines 
  of 
  growth. 
  

  

  