﻿Report 
  of 
  ihe 
  State 
  Geologist.. 
  3^9 
  

  

  560 
  

  

  Light 
  grey 
  subcrystalline 
  limestone 
  (Eticrinal 
  limestone). 
  

  

  Prevailing 
  species, 
  Actinopteria 
  decussata, 
  Lyriopecten 
  suborbi- 
  

   cularis, 
  Terebratula 
  sp. 
  (large), 
  Chonetes 
  eoronata, 
  Athyris 
  spirt" 
  

   feroides, 
  Meristella 
  Haskinsi, 
  Orthis 
  Vanuxemi, 
  Productella 
  spinu- 
  

   licosta. 
  Species 
  of 
  less 
  frequent 
  occurrence, 
  Phacops 
  rana, 
  Stro- 
  

   pheodonta 
  demissa, 
  S. 
  nacrea, 
  S. 
  coneava, 
  S. 
  incequistriata, 
  Spirifer 
  

   audaculus, 
  Rhynchonella 
  Sappho. 
  

  

  562 
  

  

  Soft, 
  dark 
  shales, 
  heavy-bedded, 
  considerably 
  bituminous, 
  

   with 
  fossils 
  in 
  thin 
  layers, 
  the 
  intervening 
  rocks 
  being 
  barren. 
  

  

  At 
  578 
  a 
  thin 
  bed 
  composed 
  of 
  Ambocoelia 
  umbonata. 
  

  

  The 
  most 
  abundant 
  species 
  in 
  all 
  the 
  fossil 
  bands 
  is 
  Lio- 
  

   rhynchus 
  multicosta, 
  which 
  frequently 
  prevails 
  almost 
  to 
  the 
  

   exclusion 
  of 
  other 
  species. 
  The 
  composition 
  of 
  the 
  fauna 
  in 
  

   other 
  respects, 
  and 
  taken 
  as 
  a 
  whole, 
  is 
  as 
  follows: 
  

  

  Trllobites: 
  None. 
  

  

  Ostracodes 
  of 
  various 
  species 
  common. 
  

  

  Cephalopods: 
  Gonatites 
  uniangularis 
  and 
  G. 
  sp., 
  both 
  

   rarely. 
  

  

  Gastropods: 
  None. 
  

  

  Pteropods: 
  Pharetrella 
  tenebrosa 
  rare. 
  Styliolina 
  Jissur- 
  

   ella 
  very 
  common. 
  

  

  Lamellibranchs 
  : 
  Jjunulicardium 
  fragile 
  Modiomorpha 
  

   subalata, 
  Nuculites 
  Nyssa, 
  common; 
  Paracyclas 
  lineatus, 
  

   Aviculopecten 
  princeps, 
  Nuculites 
  triqueter, 
  Modiella 
  pygmcea, 
  

   JPaloeoneilo 
  fecunaa, 
  Jjunulicardium 
  JLivonice, 
  sp. 
  no 
  v. 
  

   Panenha 
  wquilatera, 
  P. 
  retusa, 
  Liopteria 
  Icevis, 
  Phthonia 
  

   nodocostata 
  less 
  abundant. 
  

  

  Brachiopods: 
  Chonetes 
  scitula, 
  Spirifer 
  mucronatus 
  

   (small 
  variety), 
  Productella 
  spinulicosta, 
  Orbiculoidea 
  media 
  

   common; 
  Stropheodonta 
  perplana 
  rarely. 
  

  

  Plant 
  remains, 
  stipes 
  and 
  twigs, 
  unidentifiable, 
  common. 
  

  

  