﻿

  Fourth 
  report 
  of 
  the 
  director 
  1907 
  55 
  

  

  same 
  author 
  had 
  previously 
  described 
  the 
  beds 
  at 
  Campbelltou, 
  N. 
  B., 
  

   before 
  they 
  were 
  found 
  to 
  contain 
  fish 
  remains, 
  and 
  had 
  pronounced 
  

   upon 
  their 
  equivalence 
  with 
  the 
  lower 
  part 
  of 
  the 
  Gaspe 
  sandstones. 
  

   This 
  opinion 
  was 
  based 
  upon 
  evidence 
  of 
  paleobotany, 
  and, 
  having 
  

   been 
  confirmed 
  a 
  few 
  years 
  afterward 
  by 
  J. 
  W. 
  Dawson, 
  is 
  now 
  

   generally 
  accepted. 
  Indeed, 
  Logan 
  seems 
  to 
  have 
  entertained 
  simi- 
  

   lar 
  views 
  as 
  early 
  as 
  1863 
  [Geol. 
  Can. 
  p. 
  450]. 
  As 
  for 
  the 
  plant 
  

   and 
  fish-bearing 
  beds 
  at 
  Scaumenac 
  bay, 
  on 
  the 
  Quebec 
  side 
  of 
  the 
  

   Restigouche, 
  these 
  are 
  asserted 
  by 
  Dawson 
  to 
  be 
  " 
  no 
  doubt 
  the 
  

   equivalents 
  and 
  continuation 
  of 
  the 
  upper 
  part 
  of 
  the 
  Gaspe 
  sand- 
  

   stones." 
  In 
  the 
  absence 
  of 
  a 
  more 
  precise 
  indication 
  of 
  their 
  age, 
  

   these 
  beds 
  are 
  commonly 
  referred 
  to 
  as 
  Upper 
  Devonic, 
  and 
  their 
  

   vertebrate 
  content 
  favors 
  that 
  conclusion. 
  

  

  In 
  the 
  light 
  of 
  Dr 
  Clarke's 
  coordination 
  of 
  the 
  Gaspe 
  sandstone 
  

   series 
  with 
  rocks 
  of 
  Postoriskanian 
  age, 
  we 
  are 
  no 
  longer 
  required 
  

   to 
  look 
  in 
  that 
  direction, 
  nor 
  to 
  the 
  probably 
  contemporaneous 
  Camp- 
  

   belltou 
  fauna 
  for 
  the 
  origin 
  of 
  the 
  Onondaga 
  fish 
  fauna 
  found 
  in 
  

   New 
  York 
  State. 
  On 
  the 
  other 
  hand 
  it 
  may 
  be 
  conceded 
  as 
  rather 
  

   more 
  likely 
  that 
  there 
  was 
  some 
  movement 
  among 
  vertebrate 
  organ- 
  

   isms 
  in 
  the 
  reverse 
  direction, 
  for 
  such 
  an 
  hypothesis 
  would 
  account 
  

   for 
  the 
  presence 
  of 
  a 
  typical 
  Onondaga 
  species, 
  Machaeracan- 
  

   t 
  h 
  u 
  s 
  s 
  u 
  1 
  c 
  a 
  t 
  u 
  s 
  , 
  at 
  different 
  levels 
  in 
  the 
  Gaspe 
  series 
  (Logan's 
  

   Divisions 
  1 
  and 
  6). 
  The 
  genus 
  Cephalaspis 
  is 
  common 
  to 
  both 
  the 
  

   Gaspe 
  series 
  and 
  Campbellton 
  beds, 
  and 
  together 
  with 
  the 
  majority 
  

   of 
  forms 
  from 
  the 
  latter 
  horizon 
  is 
  indicative 
  of 
  Old 
  Red 
  sandstone 
  

   conditions. 
  

  

  Reverting 
  now 
  to 
  the 
  Hudson 
  Bay 
  Middle 
  Devonic 
  fauna, 
  we 
  find 
  

   that, 
  as 
  listed 
  by 
  Whiteaves, 
  it 
  is 
  unmistakably 
  of 
  about 
  the 
  same 
  

   age 
  as 
  the 
  Onondaga. 
  According 
  to 
  Schuchert, 
  its 
  faunal 
  facies 
  

   " 
  is 
  more 
  that 
  of 
  the 
  Mississippian 
  type 
  than 
  any 
  other 
  known 
  in 
  

   America." 
  This 
  similarity 
  is 
  therefore 
  held 
  to 
  indicate 
  that 
  there 
  

   was 
  at 
  least 
  intermittent 
  connection 
  between 
  the 
  two 
  basins 
  during 
  

   Onondaga 
  time, 
  and 
  persisting 
  well 
  into 
  the 
  Hamilton. 
  It 
  is 
  ad- 
  

   mitted, 
  however, 
  that 
  the 
  question 
  as 
  to 
  how 
  the 
  stream 
  of 
  migration 
  

   entered 
  the 
  Hudson 
  Bay 
  area 
  during 
  the 
  Middle 
  Devonic 
  is 
  not 
  so 
  

   easy 
  to 
  answer. 
  Precisely 
  at 
  this 
  point 
  some 
  light 
  is 
  thrown 
  on 
  the 
  

   nroblem 
  by 
  vertebrate 
  paleontology. 
  A 
  number 
  of 
  specimens 
  of 
  

   Macropetalichthys 
  sullivanti 
  (== 
  M 
  . 
  .r 
  a 
  p 
  h 
  e 
  i 
  d 
  o 
  - 
  

   lab 
  is) 
  are 
  recorded 
  by 
  Bell 
  and 
  Whiteaves 
  from 
  the 
  country 
  

   immediately 
  west 
  and 
  south 
  of 
  Hudson 
  and 
  James 
  bays. 
  This 
  

   exclusively 
  Onondaga 
  species 
  (Mr 
  Schuchert 
  inadvertently 
  calls 
  it 
  

   a 
  Hamilton 
  fossil) 
  is 
  most 
  abundant 
  in 
  Ohio 
  and 
  Indiana, 
  and 
  

   decidedly 
  less 
  common 
  in 
  New 
  York 
  State. 
  The 
  same 
  genus, 
  repre- 
  

   sented 
  bv 
  some 
  two 
  or 
  three 
  species, 
  occurs 
  also 
  in 
  the 
  Eifelian 
  

   Devonic, 
  which 
  is 
  equivalent 
  practically 
  to 
  the 
  Onondaga, 
  and 
  in 
  the 
  

   slightly 
  earlier 
  horizon 
  in 
  Bohemia 
  designated 
  as 
  eta^e 
  G 
  1 
  . 
  No 
  

   trace 
  of 
  it 
  occurs, 
  however, 
  in 
  the 
  Mesodevonic 
  of 
  the 
  maritime 
  

   provinces 
  of 
  eastern 
  North 
  America. 
  One 
  may 
  readily 
  infer 
  that 
  

   this 
  genus 
  and 
  its 
  various 
  associates 
  are 
  indigene 
  in 
  Bohemia, 
  a 
  part 
  

   of 
  the 
  vertebrate 
  fauna 
  from 
  etage 
  G 
  1 
  being 
  inceptive 
  in 
  etage 
  F. 
  

  

  