﻿62 
  

  

  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  The 
  11 
  genera 
  and 
  30 
  species 
  of 
  Gasteropoda 
  are 
  nearly 
  all 
  con- 
  

   fined 
  to 
  the 
  Kingsthorpe 
  area 
  ; 
  only 
  7 
  of 
  the 
  30 
  occur 
  at 
  Duston 
  or 
  

   Blisworth. 
  Anabacia 
  orbalites 
  and 
  GladopliyVia 
  Babeana 
  are 
  all 
  the 
  

   corals 
  known. 
  

  

  Neither 
  the 
  fauna 
  nor 
  the 
  true 
  position 
  of 
  the 
  Northampton 
  Sand 
  

   were 
  understood 
  until 
  Mr. 
  Sharp 
  so 
  ably 
  worked 
  out 
  the 
  Northamp- 
  

   tonshire 
  beds, 
  and 
  showed 
  their 
  relation 
  to 
  those 
  of 
  Oxfordshire, 
  

   the 
  age 
  of 
  which 
  was 
  a 
  matter 
  of 
  much 
  doubt 
  stratigraphically. 
  

   The 
  fine 
  collection 
  made 
  by 
  Mr. 
  Sharp 
  settled 
  that 
  point, 
  and 
  led 
  

   to 
  the 
  reconsideration 
  and 
  reconstruction 
  of 
  that 
  part 
  of 
  the 
  Geolo- 
  

   gical 
  Survey 
  Maps 
  bearing 
  upon 
  the 
  lateral 
  extension 
  and 
  vertical 
  

   thickness 
  of 
  these 
  beds. 
  

  

  The 
  fauna 
  of 
  the 
  Northampton 
  Sands 
  of 
  Northamptonshire 
  is 
  

   larger 
  than 
  that 
  of 
  the 
  Great 
  Oolite, 
  the 
  genera 
  being 
  81 
  and 
  the 
  

   species 
  238. 
  Zoologically 
  grouped, 
  they 
  are 
  as 
  follows 
  : 
  — 
  

  

  Reptilia 
  2 
  genera 
  and 
  2 
  species. 
  

  

  

  Ammonites 
  1 
  

  

  Nautili 
  1 
  

  

  Belemnites 
  1 
  

  

  Gasteropoda 
  16 
  

  

  Dimyaria 
  24 
  

  

  Monomyaria 
  13 
  

  

  Brachiopoda 
  2 
  

  

  Annelida 
  1 
  

  

  Echinoidea 
  10 
  

  

  Crustacea 
  1 
  

  

  Actinozoa 
  6 
  

  

  Amorphozoa 
  1 
  

  

  Bryozoa 
  1 
  

  

  Plant* 
  1 
  

  

  81 
  

  

  12 
  

  

  4 
  

  

  6 
  

  

  30 
  

  

  79 
  

  

  62 
  

  

  14 
  

  

  3 
  

  

  12 
  

  

  1 
  

  

  8 
  

  

  1 
  

  

  1 
  

  

  3 
  

  

  238 
  

  

  The 
  Molluscan 
  fauna 
  prevails, 
  showing 
  its 
  moderately 
  deep- 
  

   sea 
  character. 
  37 
  genera 
  and 
  141 
  species 
  of 
  the 
  Lamellibranchiata, 
  

   and 
  16 
  genera 
  and 
  30 
  species 
  of 
  Gasteropoda, 
  12 
  species 
  of 
  Ammo- 
  

   nites 
  and 
  4 
  Nautili, 
  with 
  10 
  genera 
  and 
  12 
  species 
  of 
  Echinoidea, 
  

   nearly 
  complete 
  the 
  whole 
  fauna. 
  Mr. 
  Sharp 
  gives 
  five 
  localities 
  

   for 
  the 
  distribution 
  of 
  the 
  Northampton-sand 
  species 
  : 
  — 
  

  

  1. 
  Kingsthorpe. 
  

  

  2. 
  Northampton. 
  

  

  3. 
  Duston 
  Old 
  Pit. 
  

  

  4. 
  Duston 
  Ironstone 
  Pit. 
  

  

  5. 
  Blisworth 
  and 
  Gayton. 
  

  

  In 
  1873, 
  and 
  in 
  the 
  < 
  Quart. 
  Journal 
  of 
  the 
  Geol. 
  Soc.', 
  appeared 
  

   Mr. 
  Sharp's 
  second 
  paper 
  upon 
  the 
  Oolites 
  of 
  Northampton- 
  

   shire, 
  in 
  which 
  he 
  treats 
  of 
  the 
  extensive 
  group 
  of 
  rocks 
  of 
  

   Inferior 
  Oolite 
  age, 
  termed 
  the 
  Lincolnshire 
  Limestone, 
  or 
  " 
  Great 
  

   Limestone 
  of 
  the 
  Inferior 
  Oolite." 
  Mr. 
  Sharp 
  established 
  the 
  con- 
  

  

  