﻿Appendix 
  

  

  Upper 
  Devonian 
  fish-fauna 
  of 
  Delaware 
  county, 
  New 
  York 
  

  

  By 
  0. 
  R. 
  Eastman 
  

  

  The 
  following 
  notes 
  are 
  based 
  on 
  a 
  small 
  collection 
  of 
  fossil 
  

   fishes 
  from 
  the 
  base 
  of 
  the 
  Catskill 
  formation 
  in 
  Delaware 
  

   county, 
  New 
  York, 
  together 
  with 
  a 
  few 
  specimens 
  from 
  the 
  Che- 
  

   mung 
  group 
  near 
  Franklin 
  Station 
  in 
  the 
  same 
  county 
  and 
  one 
  

   or 
  two 
  other 
  localities, 
  which 
  were 
  collected 
  by 
  Prof. 
  Charles 
  S. 
  

   Prosser 
  during 
  the 
  prosecution 
  of 
  his 
  geologic 
  survey 
  of 
  this 
  

   region, 
  and 
  were 
  turned 
  over 
  by 
  him 
  to 
  the 
  writer 
  for 
  examina- 
  

   tion 
  and 
  report. 
  

  

  The 
  material 
  may 
  be 
  said 
  to 
  be 
  fairly 
  representative, 
  and 
  

   though 
  its 
  state 
  of 
  preservation 
  is 
  not 
  so 
  favorable 
  as 
  one 
  might 
  

   desire, 
  yet 
  it 
  is 
  fully 
  as 
  good 
  as 
  the 
  average 
  that 
  can 
  be 
  obtained 
  

   from 
  rocks 
  of 
  this 
  age 
  in 
  New 
  York 
  state. 
  Most 
  of 
  the 
  specimens 
  

   show 
  signs 
  of 
  having 
  been 
  drifted 
  about 
  by 
  currents 
  prior 
  to 
  de- 
  

   position. 
  The 
  plates 
  of 
  Bothriolepis, 
  for 
  instance, 
  are 
  invariably 
  

   found 
  detached, 
  and 
  their 
  ornament 
  more 
  or 
  less 
  abraded. 
  But 
  

   though 
  the 
  heavier 
  fragments 
  have 
  suffered 
  severely, 
  delicate 
  

   objects 
  like 
  the 
  scales 
  of 
  crossopterygians 
  sometimes 
  occur 
  

   almost 
  wholly 
  uninjured. 
  The 
  latter 
  probably 
  became 
  detached 
  

   and 
  covered 
  with 
  sediment 
  very 
  close 
  to 
  the 
  spot 
  where 
  the 
  dead 
  

   creature 
  finally 
  sank 
  to 
  the 
  bottom. 
  

  

  Although 
  our 
  knowledge 
  of 
  the 
  higher 
  Devonian 
  fish-fauna 
  in 
  

   the 
  eastern 
  states 
  is 
  based 
  for 
  the 
  most 
  part 
  on 
  incomplete 
  

   specimens, 
  there 
  is 
  reason 
  to 
  expect 
  it 
  will 
  become 
  greatly 
  aug- 
  

   mented 
  in 
  the 
  course 
  of 
  time, 
  since 
  the 
  variety 
  of 
  fragments 
  

   already 
  discovered 
  indicates 
  a 
  considerable 
  diversity 
  even 
  as 
  

   early 
  as 
  the 
  Lower 
  Devonian. 
  It 
  is 
  impossible 
  not 
  to 
  derive 
  some 
  

   information 
  from 
  the 
  comparison 
  of 
  large 
  numbers 
  of 
  dissociated 
  

   parts; 
  and 
  among 
  the 
  latter 
  there 
  is 
  always 
  the 
  chance 
  of 
  some 
  

  

  