﻿Finmarken 
  in 
  Northern 
  Norway. 
  

  

  89 
  

  

  fjord, 
  by 
  J. 
  Braastad, 
  mining 
  engineer, 
  and 
  by 
  the 
  writer. 
  

   This 
  fossil 
  occurs 
  about 
  120 
  meters 
  above 
  the 
  pre-Cam- 
  

   brian 
  rocks. 
  The 
  exact 
  zoologic 
  position 
  of 
  Platyso- 
  

   lenites 
  is, 
  however, 
  not 
  yet 
  determined, 
  as 
  nothing 
  other 
  

   than 
  the 
  slender 
  crinoid-stem-like 
  cylinders 
  have 
  been 
  

   found. 
  On 
  the 
  other 
  hand, 
  it 
  seems 
  fairly 
  certain 
  that 
  

   it 
  represents 
  the 
  stem, 
  or 
  possibly 
  the 
  arms, 
  of 
  a 
  cystid. 
  

   At 
  any 
  rate, 
  in 
  the 
  whole 
  of 
  the 
  Scandinavian 
  Baltic 
  

  

  Fig. 
  2. 
  

  

  Fig. 
  2. 
  — 
  Canyon 
  of 
  the 
  Alten 
  Kiver, 
  30 
  km. 
  from 
  the 
  sea. 
  

   river 
  to 
  plain, 
  400 
  m. 
  Photograph 
  by 
  Kr. 
  Nissen. 
  

  

  Altitude 
  from 
  

  

  region 
  it 
  is 
  an 
  excellent 
  guide 
  fossil 
  to 
  the 
  oldest 
  known 
  

   fossiliferous 
  zone, 
  or 
  the 
  Lower 
  Cambrian. 
  

  

  To 
  the 
  southwest 
  of 
  Finmarken, 
  in 
  the 
  district 
  of 
  

   Tromso 
  Th. 
  Vogt 
  found 
  in 
  1915 
  in 
  the 
  "Hyolithus 
  zone," 
  

   besides 
  Platys 
  olenites, 
  other 
  Lower 
  Cambrian 
  fossils, 
  

   chiefly 
  trilobites. 
  

  

  The 
  Lower 
  Cambrian 
  series, 
  except 
  in 
  its 
  uppermost 
  

   part, 
  is 
  almost 
  undef 
  ormed 
  and 
  rests 
  on 
  the 
  even 
  or 
  pene- 
  

   plained 
  surface 
  of 
  the 
  pre- 
  Cambrian, 
  a 
  surface 
  that 
  now 
  

  

  