﻿TABLE 
  OF 
  CLASSIFICATION. 
  

  

  Class 
  BRACHIOPODA. 
  

  

  Paterina,* 
  Beecher, 
  1891. 
  

  

  Sub-class 
  ISTARTICULATA, 
  Huxley; 
  LYOPOMATA, 
  

  

  Owen. 
  

  

  Order 
  MESOCAULIA 
  or 
  LINGULACEA, 
  Waagen. 
  

  

  Family 
  O 
  bolide, 
  King. 
  

  

  Obolus, 
  von 
  Eichwald, 
  1829. 
  

  

  Ungula, 
  Pander, 
  1830. 
  

  

  Ungulites, 
  Bronn, 
  1848. 
  

   Aulonotreta, 
  Kutorga, 
  1848. 
  

  

  Acritis, 
  Volbortk, 
  1869. 
  

   Schmidtia, 
  Volborth, 
  1869. 
  

   Mickwitzia, 
  Schmidt, 
  1888. 
  

   Spondylobolus, 
  McCoy, 
  1852. 
  

  

  OboleUa, 
  Billings, 
  1861 
  . 
  

  

  Dicellomus, 
  Hall, 
  1871. 
  

   Elkania, 
  Ford, 
  1886. 
  

  

  Billingsia, 
  Ford, 
  1886. 
  

   Botsfordia, 
  Matthew, 
  1893. 
  

   Neobolus, 
  Waagen, 
  1885. 
  

   Monobolina, 
  Salter, 
  1865. 
  

  

  Family 
  Lingulid^e, 
  Gray. 
  

  

  Lingula, 
  Bruguiere, 
  1792. 
  

  

  Pharetra, 
  Bolton, 
  1798. 
  

  

  Lingularius, 
  Dumeril, 
  1806. 
  

   Lingulella, 
  Salter, 
  1866. 
  

   Lingulepis, 
  Hall, 
  1863. 
  

  

  Leptobolus, 
  Hall, 
  1871 
  . 
  

   Glossina, 
  Phillips, 
  1848. 
  

   Dignomia, 
  Hall, 
  1871. 
  

   BarroiseUa, 
  Hall, 
  1892. 
  

   Tomasina, 
  Hall, 
  1892. 
  

  

  Family 
  Trimerellid^e, 
  Davidson 
  and 
  King. 
  

  

  Lakhmina, 
  CEhlert, 
  1887. 
  

  

  Davidsonella, 
  "Waagen, 
  1885. 
  

   Lingulops, 
  Hall, 
  1871. 
  

   Lingulasma, 
  Ulrich, 
  1889. 
  

   Dinobolus, 
  HaU, 
  1871 
  . 
  

  

  Conradia, 
  Hall, 
  1862. 
  

  

  Obolellina, 
  Billings, 
  1871. 
  

   Monomerella, 
  Billings, 
  1871. 
  

   Trimerella, 
  Billings, 
  1862. 
  

   Rhinobolus, 
  HaU, 
  1874. 
  

  

  * 
  The 
  genus 
  Paterina, 
  representing, 
  according 
  to 
  our 
  present 
  knowledge, 
  the 
  fundamental- 
  

   stock 
  or 
  radicle 
  of 
  all 
  the 
  Brachiopods, 
  might 
  be 
  embraced 
  by 
  some 
  of 
  the 
  primitive 
  families, 
  

   both 
  of 
  the 
  Inarticulata 
  and 
  the 
  Articulata. 
  By 
  placing 
  it 
  in 
  tbis 
  arrangement, 
  outside 
  both 
  of 
  

   the 
  great 
  sub-classes, 
  it 
  is 
  the 
  purpose 
  to 
  express 
  the 
  fact 
  that 
  the 
  genus 
  belongs 
  as 
  much 
  to 
  

   one 
  as 
  to 
  the 
  other, 
  and 
  that 
  it 
  is 
  actually 
  beyond 
  the 
  pale 
  of 
  both 
  as 
  it 
  has 
  not 
  assumed 
  the 
  

   differential 
  characters 
  of 
  either. 
  

  

  