﻿Report 
  of 
  the 
  State 
  Geologist 
  

  

  1137 
  

  

  Thecospira, 
  II, 
  73(821). 
  

   Tomasina, 
  I, 
  99(231). 
  

   Torynifer, 
  IE, 
  195 
  (943). 
  

   Trematis, 
  I, 
  126 
  (258). 
  

   Trematobolus, 
  I, 
  119 
  (251). 
  

   Trematospira, 
  II, 
  50 
  (798) 
  . 
  

   Trigeria, 
  II, 
  108(856). 
  

   Trigonosemus, 
  II, 
  140 
  (888). 
  

   Triganotreta, 
  II, 
  3 
  (751). 
  

   Trimerella, 
  I, 
  104(236). 
  

   Triplecia, 
  1, 
  157(289). 
  

   Tropidoleptus, 
  II, 
  122 
  (870). 
  

  

  UncineUa, 
  11,46 
  (794). 
  

   Uneinulina, 
  II, 
  80 
  (828) 
  . 
  

   Uncinulus, 
  II, 
  80 
  (828) 
  . 
  

   Uncites, 
  H, 
  43 
  (793). 
  

  

  Ungula, 
  I, 
  110 
  (242) 
  . 
  

   Ungulites,!, 
  110(242). 
  

  

  Verneuilia, 
  H, 
  14(762). 
  

   Yitulina, 
  II, 
  56(804). 
  

   Volborthia, 
  I, 
  117 
  (249). 
  

  

  Waldheimia, 
  II, 
  131 
  (879). 
  

   Waltonia, 
  II, 
  141 
  (889). 
  

   Whitfieldella, 
  II, 
  18 
  (766) 
  . 
  

   Whitfeldia, 
  II, 
  22 
  (770) 
  . 
  

   Wilsonia, 
  II, 
  79(827). 
  

  

  Zeilleria, 
  II, 
  135 
  (883) 
  . 
  

   Zellania, 
  II, 
  149 
  (897) 
  . 
  

   Zdimir, 
  II, 
  94(842). 
  

   Zugmaveria, 
  II, 
  130 
  (878). 
  

   Zygospira, 
  II, 
  64(812). 
  

  

  ADDENDA. 
  

  

  « 
  

  

  Orthotropia, 
  Hall, 
  1894. 
  

  

  (For 
  illustration 
  see 
  Palaeontology 
  of 
  New 
  York, 
  Vol. 
  VIII, 
  part 
  2, 
  pi. 
  84, 
  

   figs. 
  3-7.) 
  

  

  Elongate 
  biconvex 
  shells 
  with 
  short 
  hinge, 
  erect 
  cardinal 
  area, 
  

   open 
  delthyrium, 
  deep 
  muscular 
  scar 
  in 
  the 
  pedicle- 
  valve 
  forming 
  

   a 
  sessile 
  spondylium 
  from 
  the 
  anterior 
  extremity 
  of 
  which 
  

   extends 
  a 
  short 
  median 
  septum. 
  There 
  is 
  also 
  a 
  median 
  septum 
  

   in 
  the 
  brachial 
  valve. 
  

  

  Type, 
  Orthotropia 
  dolomitica, 
  Hall. 
  Niagara 
  group. 
  

  

  Torynifer, 
  Hall, 
  1894. 
  

  

  (For 
  illustration 
  see 
  Palaeontology 
  of 
  New 
  York, 
  Vol. 
  VIII, 
  part 
  2, 
  pi. 
  84, 
  

   figs. 
  34, 
  35.) 
  

  

  Shells 
  athyroid 
  in 
  external 
  aspect, 
  but 
  with 
  a 
  well-defined 
  

   cardinal 
  area 
  and 
  a 
  distinct 
  spondylium 
  in 
  the 
  pedicle- 
  valve 
  

   supported 
  by 
  a 
  median 
  septum. 
  

  

  Type, 
  Torynif&r 
  critieus, 
  Hall. 
  Lower 
  Carboniferous 
  (St. 
  

   Louis 
  group). 
  

  

  143 
  195 
  

  

  