﻿SALTER 
  BUDLEIGn 
  SALTEliTON 
  FOSSILS. 
  2^7 
  

  

  lines 
  along 
  the 
  whole 
  northern 
  zone 
  from 
  Siberia 
  to 
  Canada. 
  The 
  

   apparition, 
  therefore, 
  of 
  the 
  true 
  French 
  type 
  in 
  Devonshire 
  was 
  as 
  

   unexpected 
  as 
  welcome 
  ; 
  and 
  the 
  inference 
  to 
  be 
  drawn 
  from 
  this 
  

   extension 
  of 
  it 
  into 
  our 
  southern 
  provinces 
  is 
  an 
  obvious 
  one. 
  It 
  

   implies 
  that 
  the 
  barrier 
  indicated 
  by 
  Barrande, 
  and 
  adopted 
  by 
  

   Mr. 
  Godwin-Austen, 
  divided 
  the 
  Scandinavian 
  and 
  mid-European 
  

   areas 
  all 
  but 
  completely 
  along 
  a 
  line 
  which 
  ranged 
  to 
  the 
  north 
  of 
  

   the 
  Cornish 
  and 
  Devonian 
  areas. 
  This 
  view 
  has 
  long 
  been 
  held 
  by 
  

   myself 
  and, 
  I 
  believe, 
  by 
  others 
  ; 
  and 
  it 
  is 
  lately 
  illustrated 
  in 
  the 
  

   Geological 
  Magazine 
  for 
  July 
  of 
  the 
  present 
  year, 
  No. 
  1. 
  

  

  For 
  some 
  unexplained 
  reason, 
  while 
  the 
  northern 
  zone 
  has 
  been 
  

   well 
  explored 
  and 
  its 
  contents 
  duly 
  published, 
  the 
  Mid-European 
  

   group 
  of 
  slate 
  rocks, 
  though 
  rich 
  in 
  fossils, 
  has 
  had 
  but 
  very 
  few 
  

   illustrators. 
  There 
  are 
  scarcely 
  any 
  reliable 
  figures 
  extant, 
  if 
  we 
  

   except 
  those 
  of 
  the 
  great 
  Trilobites 
  of 
  Angers, 
  by 
  Marie 
  Rouault, 
  

   the 
  Spanish 
  fossils 
  published 
  by 
  De 
  Yerneuil 
  and 
  M. 
  Prado 
  from 
  

   the 
  Sierra 
  Morena 
  and 
  Almaden*, 
  and 
  the 
  species 
  from 
  Busaco 
  

   illustrated 
  by 
  the 
  late 
  Daniel 
  Sharpef. 
  The 
  splendid 
  work 
  of 
  

   Barrande 
  is, 
  of 
  course, 
  excepted; 
  but 
  though 
  his 
  plates, 
  now 
  in 
  

   preparation, 
  will 
  doubtless 
  give 
  us 
  as 
  good 
  an 
  insight 
  into 
  the 
  

   Mollusca 
  as 
  we 
  have 
  already 
  of 
  the 
  Crustacea, 
  so 
  far 
  we 
  are 
  without 
  

   any 
  precise 
  indications 
  what 
  the 
  Lower 
  Silurian 
  fauna 
  of 
  Central 
  

   Europe 
  has 
  in 
  store 
  for 
  us 
  ; 
  and 
  we 
  want 
  figures 
  very 
  much. 
  

  

  The 
  Normandy 
  fossils, 
  however, 
  have 
  been 
  by 
  no 
  means 
  neglected, 
  

   though 
  illustrations 
  of 
  them 
  are 
  rare. 
  No 
  one 
  can 
  have 
  read 
  the 
  

   results 
  of 
  Rouault's 
  labours 
  in 
  the 
  district 
  of 
  Rennesij: 
  without 
  seeing 
  

   that 
  there 
  is 
  abundance 
  of 
  material 
  for 
  the 
  engraver, 
  while 
  Rouault's 
  

   description 
  will 
  enable 
  us 
  to 
  recognize 
  many 
  of 
  the 
  more 
  prominent 
  

   species. 
  That 
  enthusiastic 
  worker 
  has 
  described 
  the 
  giant 
  Linguhe 
  

   and 
  Fucoids 
  of 
  the 
  Armorican 
  sandstone, 
  and 
  his 
  labours 
  and 
  those 
  of 
  

   MM. 
  Triger 
  and 
  De 
  Yerneuil 
  have 
  ascertained 
  the 
  exact 
  horizon 
  of 
  

   those 
  Trilobites 
  long 
  ago 
  roughly 
  catalogued 
  and 
  figured 
  by 
  Deslong- 
  

   champs. 
  The 
  quartzites 
  of 
  May 
  and 
  Gahard 
  have 
  many 
  species 
  

   identical 
  § 
  with 
  those 
  here 
  described, 
  and 
  some 
  of 
  those 
  which 
  I 
  could 
  

   not 
  otherwise 
  recognize 
  have 
  been 
  kindly 
  identified 
  from 
  our 
  figures 
  

   by 
  M. 
  de 
  Yerneuil. 
  There 
  is 
  a 
  small 
  collection 
  of 
  Norman 
  fossils 
  in 
  

   the 
  cabinets 
  of 
  the 
  Geological 
  Society, 
  and 
  it 
  was 
  the 
  perfect 
  identity 
  

   of 
  these, 
  even 
  as 
  to 
  accidents 
  of 
  mineral 
  composition, 
  which 
  first 
  

   attracted 
  attention. 
  In 
  brief, 
  then, 
  the 
  mass 
  of 
  the 
  Budleigh 
  Sal- 
  

   terton 
  fossils 
  are 
  Norman 
  types 
  of 
  the 
  May 
  Sandstone, 
  and 
  some 
  

   belong 
  to 
  the 
  "Gres 
  Armoricain;" 
  several 
  of 
  the 
  species 
  have 
  been 
  

   already 
  named 
  in 
  France, 
  and 
  some 
  of 
  the 
  more 
  conspicuous 
  shells, 
  

   though 
  apparently 
  undescribed, 
  are 
  characteristic 
  of 
  the 
  rocks 
  on 
  

   both 
  sides 
  the 
  Channel. 
  

  

  * 
  Bull. 
  Soc. 
  Geol. 
  France, 
  2 
  e 
  ser. 
  vol. 
  xii. 
  

  

  t 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  1853, 
  vol. 
  ix. 
  

  

  J 
  Bull. 
  Soc. 
  Geol. 
  France, 
  2 
  e 
  ser. 
  vol. 
  vii. 
  p. 
  725, 
  vol. 
  viii. 
  p. 
  358. 
  

  

  § 
  According 
  to 
  M. 
  Rouault's 
  latest 
  opinion, 
  and 
  the 
  sections 
  given 
  by 
  M. 
  

   Triger 
  {Joe. 
  cit. 
  vol. 
  vii. 
  p. 
  794), 
  the 
  May 
  sandstone 
  lies 
  quite 
  above 
  the 
  Armorican 
  

   sandstone 
  with 
  the 
  Lingulce, 
  a 
  formation 
  which 
  seems 
  to 
  be 
  part 
  of 
  the 
  great 
  

   slaty 
  series 
  of 
  Angers, 
  and 
  which 
  therefore 
  far 
  underlies 
  the 
  May 
  sandstone. 
  

  

  