﻿STRATIGRAPIIIC 
  DISTRIBUTION 
  OF 
  THE 
  SPECIES 
  

  

  47 
  

  

  as 
  given 
  by 
  the 
  7iJ 
  authors 
  from 
  whose 
  works 
  the 
  hst 
  is 
  compiled. 
  The 
  Hsts 
  are 
  

   given 
  for 
  reference 
  to 
  papers 
  which 
  report 
  occurrence 
  of 
  the 
  species 
  other 
  than 
  

   Recent. 
  Unless 
  otherwise 
  stated 
  the 
  mark 
  of 
  occurrence 
  refers 
  to 
  California. 
  

   Grant 
  and 
  Gale 
  (1931) 
  included 
  the 
  compilation 
  of 
  range; 
  in 
  many 
  cases 
  a 
  note 
  

   refers 
  to 
  their 
  monograph. 
  The 
  definite 
  localities 
  will 
  be 
  found 
  in 
  each 
  author's 
  

   paper. 
  In 
  addition 
  to 
  the 
  list 
  of 
  authors 
  given 
  workers 
  should 
  consult 
  Burch 
  

   ( 
  1947, 
  p. 
  1-18) 
  which 
  is 
  a 
  discussion 
  with 
  charts 
  of 
  comparison 
  between 
  the 
  

   moUusks 
  of 
  Pleistocene 
  beds 
  (Los 
  Angeles 
  County, 
  California) 
  with 
  the 
  Recent 
  

   fauna. 
  

  

  The 
  value 
  of 
  the 
  stratigraphic 
  column 
  depends 
  on 
  the 
  correct 
  identification 
  

   of 
  the 
  species. 
  The 
  writer 
  cannot 
  verify 
  the 
  identification 
  made 
  in 
  these 
  lists. 
  As 
  

   stated 
  herein, 
  it 
  is 
  hoped 
  that 
  the 
  illustration 
  of 
  the 
  type 
  specimens 
  will 
  be 
  a 
  

   means 
  of 
  checking 
  the 
  identifications 
  made 
  in 
  these 
  lists. 
  Many 
  may 
  be 
  modified 
  

   thereby. 
  The 
  list 
  is 
  not 
  intended 
  to 
  be 
  complete. 
  

  

  The 
  following 
  is 
  the 
  key 
  to 
  the 
  numbers 
  used 
  in 
  the 
  stratigraphic 
  distribution 
  

   of 
  species 
  ( 
  Table 
  2 
  ) 
  . 
  

  

  1. 
  Woodring, 
  Bramlette, 
  and 
  Kew 
  (1946) 
  

  

  2. 
  Grant 
  and 
  Gale 
  (1931) 
  

  

  3. 
  Oldroyd 
  (1925) 
  

  

  4. 
  Stephens 
  (1929) 
  

  

  5. 
  Waterfall 
  (1929) 
  

  

  6. 
  Arnold 
  (1903) 
  

  

  7. 
  Carpenter 
  in 
  Cooper 
  (1888) 
  

  

  8. 
  Cooper 
  (1888) 
  

  

  9. 
  Chace 
  and 
  Chace 
  (1919) 
  

  

  10. 
  Berry 
  (1908) 
  

  

  11. 
  Jordan 
  (1926) 
  

  

  12. 
  Strong 
  (1928) 
  

  

  13. 
  Willett 
  (1937) 
  

  

  14. 
  Woodring 
  and 
  Bramlette 
  (1950) 
  

  

  15. 
  Clark 
  (1931) 
  

  

  16. 
  Merriam 
  (1941) 
  

  

  17. 
  Dall 
  (1892) 
  

  

  18. 
  Bartsch 
  (1911) 
  

  

  19. 
  Durham 
  (1937) 
  

  

  20. 
  Moody 
  (1916) 
  

  

  21. 
  Berry 
  (1954) 
  

  

  22. 
  Bartsch 
  (1917) 
  

  

  23. 
  Howe 
  (1922) 
  

  

  24. 
  Baily 
  (1935) 
  

  

  25. 
  Dall 
  in 
  Grant 
  and 
  Gale 
  (1931) 
  

  

  26. 
  Oldroyd 
  (1924) 
  

   21. 
  Howard 
  (1935) 
  

  

  28. 
  Jordan 
  and 
  Hertlein 
  (1926) 
  

  

  29. 
  Nomland 
  (1917) 
  

  

  30. 
  Keen 
  (1954) 
  

  

  31. 
  Woodring 
  (1938) 
  

  

  32. 
  Clark 
  (1915) 
  

   ZZ. 
  Hertlein 
  (1934) 
  

  

  34. 
  Emerson 
  and 
  Addicott 
  (1953) 
  

  

  35. 
  Durham 
  (1950) 
  

  

  36. 
  Berry 
  (1922) 
  

   2>1. 
  Chace 
  (1917) 
  

  

  