﻿Report 
  of 
  the 
  State 
  Geologist. 
  

  

  839 
  

  

  Rensselaeria, 
  Hall, 
  1859. 
  

   Beachia, 
  Hall, 
  1893. 
  

   Newberria, 
  Hall, 
  1891 
  . 
  

   Centronella, 
  Billings, 
  1859. 
  

   Oriskania, 
  Hall, 
  1893. 
  

  

  Sub-order 
  ANCYLOBKACHIA, 
  Gray. 
  

   Family 
  Centronellim:, 
  Waagen. 
  

  

  Selenella, 
  Hall, 
  1893. 
  

   Roiningerina, 
  Hall, 
  1893. 
  

   Trigeria, 
  Bayle, 
  1875. 
  

   (?) 
  Notothyris, 
  Waagen, 
  1882. 
  

   Scaphiocoelia, 
  Whitfield, 
  1891. 
  

  

  Family 
  Stringocephalid^e, 
  Dall. 
  

   Stringocephalus, 
  Defrance, 
  1827. 
  

  

  CryptoneUa, 
  Hall, 
  1861. 
  

   EuneUa, 
  HaU, 
  1893. 
  

   Harttina, 
  HaU, 
  1893. 
  

   Dielasma, 
  King, 
  1859. 
  

  

  Epithyris, 
  King, 
  1850. 
  

   Cranaena, 
  Hall, 
  1893. 
  

   Megalanteris, 
  Suess, 
  1855. 
  

  

  Family 
  Terebratulidje, 
  Gray. 
  

  

  Dielasmina, 
  Waagen, 
  1882. 
  

   Hemiptycbina, 
  Waagen, 
  1882 
  . 
  

   Beecheria, 
  Hall, 
  1893. 
  

   (?) 
  Cryptacanthia, 
  White 
  and 
  St. 
  John 
  

  

  1857. 
  

   (?) 
  Enantiosphen, 
  Whidborne, 
  1893. 
  

  

  Family 
  Terebratellhle, 
  King. 
  

   Tropidoleptus, 
  Hall, 
  1857. 
  

  

  Sub-order 
  HELICOPEGMATA 
  or 
  SPIKIFEKACEA, 
  Waagen 
  

   Family 
  Atrypid^e, 
  Dall. 
  

  

  Hallina, 
  N. 
  H. 
  Winchell 
  and 
  Schu- 
  

  

  chert, 
  1893. 
  

   Protozyga, 
  Hall, 
  1893. 
  

   (?) 
  Cyclospira, 
  HaU, 
  1893. 
  

   Zygospira, 
  HaU, 
  1862. 
  

  

  Anazyga, 
  Davidson, 
  1882. 
  

   Orthonomasa, 
  HaU, 
  1858. 
  

  

  Catazyga, 
  HaU, 
  1893. 
  

  

  Glassia, 
  Davidson, 
  1882. 
  

  

  Atrypina, 
  HaU, 
  1893. 
  

  

  (?) 
  CUntoneUa, 
  HaU, 
  1893. 
  

  

  Atrypa, 
  Dalman, 
  1828. 
  

  

  Karpinskia, 
  Tschernyschew, 
  1885. 
  

  

  Gruenewaldtia, 
  Tschernyschew, 
  1885, 
  

  

  Family 
  Spiriferinid^:, 
  Davidson. 
  

   Cyrtina, 
  Davidson, 
  1858. 
  I 
  Spiriferina, 
  d'Orbigny, 
  1847. 
  

  

  Family 
  Spiriferid^e, 
  King. 
  

  

  Spirifer, 
  Sowerby, 
  1815. 
  

  

  Choristites, 
  Fischer 
  de 
  Waldheim 
  1825. 
  

  

  Trigonotreta, 
  Koenig, 
  1825. 
  

  

  Brachythyris, 
  McCoy, 
  1844. 
  

  

  Fusella, 
  McCoy, 
  1844. 
  

   Delthyris, 
  Dalman, 
  1828. 
  

   Reticularia, 
  McCoy, 
  1844. 
  

  

  Martinia, 
  McCoy, 
  1844. 
  

   Martiniopsis, 
  Waagen, 
  1883. 
  

   Cyrtia, 
  Dalman, 
  1828. 
  

   Syringothyris, 
  A. 
  WincheU, 
  1863. 
  

   AmbocceUa, 
  HaU, 
  1860. 
  

   Metaplasia, 
  HaU, 
  1893. 
  

   VerneuiUa, 
  Hall, 
  1893. 
  

  

  