﻿PYCNODONTIDJS. 
  247 
  

  

  Gyrodus 
  platurus, 
  L. 
  Agassiz, 
  op. 
  cit. 
  Feuill. 
  (1834), 
  p. 
  16 
  (name 
  

   only) 
  ; 
  A. 
  Wagner, 
  Abh. 
  k. 
  bay. 
  Akad. 
  Wiss., 
  math.-phys. 
  

   CI. 
  vol. 
  ix. 
  (1862), 
  p. 
  336. 
  Microdon 
  platurus, 
  L. 
  Agassiz, 
  

   op. 
  cit. 
  vol. 
  ii. 
  pt. 
  i. 
  (1833), 
  p. 
  16. 
  Gyrodus 
  truncatus, 
  

   A. 
  Wagner, 
  loc. 
  cit. 
  vol. 
  vi. 
  (1851), 
  p. 
  46.— 
  Lower 
  

   Kimmeridgian 
  (Lithographic 
  Stone) 
  ; 
  Bavaria. 
  [Nearly 
  

   complete 
  fish 
  ; 
  Palaeontological 
  Museum, 
  Munich.] 
  

  

  Gyrodus 
  punctatus, 
  L. 
  Agassiz, 
  op. 
  cit. 
  vol. 
  ii. 
  pt. 
  ii. 
  (1844), 
  p. 
  231, 
  

   pi. 
  lxix. 
  a. 
  fig. 
  24 
  ; 
  A. 
  S. 
  Woodward, 
  Ann. 
  Mag. 
  Nat. 
  Hist. 
  

   [6] 
  vol. 
  xii. 
  (1893), 
  p. 
  400, 
  pi. 
  xviii. 
  figs. 
  2-4. 
  (?) 
  JPyc- 
  

   nodus 
  umbonatus, 
  L. 
  Agassiz, 
  loc. 
  cit. 
  pt. 
  i. 
  (1833), 
  p. 
  16, 
  

   pt. 
  ii. 
  (1844), 
  p. 
  194, 
  pi. 
  lxxii. 
  a. 
  figs. 
  1, 
  3, 
  4 
  (non 
  fig. 
  2).— 
  

   Corallian 
  ; 
  Malton, 
  Yorkshire. 
  [Yomer 
  ; 
  York 
  Museum.] 
  

  

  Gyrodus 
  sculptus 
  : 
  Pycnodus 
  sculptus, 
  J. 
  Cornuel, 
  Bull. 
  Soc. 
  Geol. 
  

   Prance, 
  [3] 
  vol. 
  v. 
  (1877), 
  p. 
  611, 
  pi. 
  xi. 
  figs. 
  8-10, 
  and 
  

   ibid. 
  vol. 
  viii. 
  (1880), 
  p. 
  157, 
  pi. 
  iii. 
  figs. 
  20, 
  21. 
  Cos- 
  

   modus 
  sculptus, 
  H. 
  E. 
  Sauvage, 
  Bull. 
  iSoc. 
  Sci. 
  Nat. 
  Yonne, 
  

   vol. 
  xxxiii. 
  pt. 
  ii. 
  (1879), 
  p. 
  49. 
  — 
  Neocomian 
  ; 
  Wassy, 
  

   Haute 
  Marne, 
  and 
  Soulaines, 
  Aube, 
  France. 
  [Imperfect 
  

   splenials.] 
  

  

  Gyrodus 
  (?) 
  schusteri, 
  F. 
  A. 
  Eoemer, 
  Yerstein. 
  Norddeutsch. 
  

   Oolithengeb., 
  Nachtr. 
  (1839), 
  p. 
  54. 
  — 
  Purbeckian 
  ; 
  Salz- 
  

   burg, 
  Osterwald. 
  

  

  An 
  imperfect 
  vomer, 
  with 
  widely-spaced 
  smooth 
  teeth, 
  appa- 
  

   rently 
  referable 
  to 
  a 
  large 
  species 
  of 
  Gyrodus, 
  is 
  described 
  by 
  

   Egerton 
  from 
  the 
  Kimmeridge 
  Clay 
  of 
  Kimmeridge, 
  Dorsetshire, 
  

   and 
  wrongly 
  named 
  Sphcerodus 
  gigas 
  (Quart. 
  Journ. 
  Geol. 
  Soc. 
  

   vol. 
  xxv. 
  1869, 
  p. 
  385, 
  woodc. 
  fig. 
  5). 
  

  

  Some 
  prehensile 
  front 
  teeth 
  from 
  the 
  Kimmeridgian 
  of 
  Berne, 
  

   Switzerland, 
  apparently 
  also 
  of 
  Gyrodus, 
  are 
  erroneously 
  referred 
  

   to 
  Capitodus 
  under 
  the 
  name 
  of 
  C. 
  gresslyi 
  by 
  J. 
  Thurmann, 
  Nouv. 
  

   Mem. 
  Soc. 
  Helv. 
  Sci. 
  Nat. 
  vol. 
  xviii. 
  (1864), 
  p. 
  431, 
  pi. 
  Ixi. 
  fig. 
  21. 
  

  

  The 
  following 
  names 
  have 
  also 
  been 
  given 
  to 
  indeterminable 
  

   detached 
  teeth 
  : 
  — 
  

  

  Gyrodus 
  dixoni, 
  W. 
  A. 
  Ooster, 
  Protozoe 
  Helvetica, 
  vol. 
  ii. 
  (1870), 
  

   p. 
  46, 
  pi. 
  ix. 
  fig. 
  7. 
  Figure 
  by 
  P. 
  Dixon, 
  Geol. 
  Sussex 
  

   (1850), 
  pi. 
  xxxii.* 
  fig. 
  6. 
  — 
  Chalk; 
  Sussex 
  and 
  Bernese 
  Alps. 
  

  

  Gyrodus 
  ellipticus, 
  E. 
  von 
  Eichwald, 
  Leth. 
  Eossica, 
  vol. 
  ii. 
  (1868), 
  

   p. 
  3 
  211, 
  pi. 
  xxxviii. 
  fig. 
  11. 
  — 
  Neocomian 
  ; 
  Biassala, 
  Crimea. 
  

  

  Gyrodus 
  muensteri, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  (1844), 
  

   p. 
  235, 
  pi. 
  lxix. 
  a. 
  fig. 
  17 
  ; 
  A. 
  E. 
  Reuss, 
  Yerstein. 
  bohm. 
  

   Kreideform. 
  pt. 
  i. 
  (1845), 
  p. 
  9, 
  pi. 
  iv. 
  figs. 
  57-60.— 
  Ceno- 
  

   manian 
  ; 
  Bavaria 
  and 
  Bohemia. 
  

  

  