﻿NIAGARA 
  FALLS 
  AND 
  VICINITY 
  26/ 
  

  

  escutcheon 
  — 
  depression 
  behind 
  the 
  beak 
  of 
  the 
  pelecypod 
  shell 
  

  

  exfoliate 
  — 
  peeling 
  off 
  

  

  exothecal 
  — 
  outside 
  of 
  the 
  theca 
  of 
  corals 
  

  

  explanate 
  — 
  spread 
  out 
  in 
  a 
  fiat 
  surface 
  

  

  extrathecal 
  — 
  outside 
  of 
  the 
  theca 
  of 
  corals 
  

  

  extroverted 
  — 
  turned 
  base 
  to 
  base; 
  applied 
  to 
  spirals 
  of 
  brachiopods 
  

  

  facetted 
  — 
  having 
  facets 
  or 
  numerous 
  faces 
  as 
  the 
  eye 
  of 
  an 
  insect, 
  etc. 
  

  

  facial 
  sutures 
  — 
  sutures 
  in 
  the 
  cephalon 
  of 
  trilobites 
  which 
  separate 
  the 
  free 
  

  

  from 
  the 
  fixed 
  cheeks 
  

   facies 
  — 
  local 
  characteristics 
  

   falcate 
  — 
  curved 
  like 
  a 
  scythe 
  or 
  sickle 
  

   fasciculate 
  — 
  clustered 
  

   fathom 
  — 
  a 
  measure 
  of 
  length 
  equaling 
  6 
  feet 
  used 
  chiefly 
  for 
  depths 
  of 
  the 
  

  

  sea 
  

   fenestrule 
  — 
  open 
  spaces 
  between 
  the 
  branches 
  and 
  dissepiments 
  of 
  a 
  fene- 
  

  

  stella 
  frond 
  

   filament 
  — 
  a 
  fine 
  thread 
  or 
  fiber 
  

   fimbriae 
  — 
  a 
  fringe 
  

   fixed 
  cheek 
  — 
  that 
  part 
  of 
  the 
  cephalon 
  of 
  a 
  trilobite 
  which 
  lies 
  between 
  the 
  

  

  glabella 
  and 
  the 
  facial 
  suture 
  

   fission 
  — 
  the 
  act 
  of 
  splitting 
  or 
  cleaving 
  into 
  parts 
  

   flabellate 
  — 
  fan-shaped 
  

   flange 
  — 
  a 
  projecting 
  rim 
  

   flexibilia 
  — 
  an 
  order 
  of 
  crinoids 
  characterized 
  by 
  the 
  loose 
  jointing 
  of 
  the 
  

  

  plates 
  of 
  the 
  calyx 
  

   fold 
  — 
  the 
  central 
  elevation 
  of 
  the 
  valve, 
  usually 
  the 
  brachial 
  of 
  a 
  

  

  brachiopod 
  

   foliate 
  — 
  leaf-like; 
  in 
  the 
  form 
  of 
  a 
  thin 
  leaf-like 
  expansion 
  

   foramen 
  — 
  an 
  opening 
  or 
  pore; 
  specifically 
  the 
  opening 
  for 
  the 
  pedicle 
  in 
  the 
  

  

  pedicle 
  valve 
  of 
  the 
  brachiopoda 
  

   fossula 
  — 
  groove 
  in 
  the 
  calyx 
  of 
  a 
  coral, 
  usually 
  due 
  to 
  the 
  abortion 
  of 
  a 
  

  

  septum 
  

   free 
  cheeks 
  — 
  lateral 
  portions 
  of 
  the 
  cephalon 
  of 
  trilobites 
  separated 
  off 
  by 
  

  

  the- 
  facial 
  sutures 
  

   frond 
  — 
  foliaceous 
  or 
  leaf-like 
  expansion 
  of 
  the 
  skeleton 
  of 
  bryozoa 
  and 
  

  

  other 
  organisms 
  

   fruticulose 
  — 
  resembling 
  a 
  small 
  shrub 
  

   fucoid 
  — 
  a 
  seaweed, 
  particularly 
  of 
  the 
  type 
  similar 
  to 
  the 
  modern 
  Fucus, 
  or 
  

  

  rockweed 
  

   galeate 
  — 
  with 
  a 
  helmet-like 
  covering 
  

   gastric 
  — 
  pertaining 
  to 
  the 
  stomach 
  

  

  genal 
  angles 
  — 
  posterior 
  .lateral 
  angles 
  of 
  the 
  free 
  cheeks 
  of 
  trilobites 
  

   genal 
  spines 
  — 
  posterior 
  prolongations, 
  or 
  spines, 
  of 
  the 
  free 
  cheeks 
  of 
  

  

  trilobites 
  

   geode 
  — 
  a 
  hollow 
  concretion 
  usually 
  lined 
  with 
  crystals, 
  but 
  also 
  filled 
  com- 
  

   pletely 
  with 
  foreign 
  mineral 
  matter 
  

  

  