Vol.  49.] 
OF  THE  SHEEBOEXE  DISTEICT. 
501 
Note  oh  Feogdeh. — The  ironshot  oolite,  Beds  3-8,  quarried  for 
road-metal,  has  yielded  a  large  series  of  Ammonites ;  but,  as  it  was 
thought  sufficiently  precise  to  label  them  4  Humphriesianum- zone,’ 
simply,  exact  information  as  to  their  position  is  wanting.  Mr. 
Hudleston  first  pointed  out  the  necessity  of  distinguishing  the  upper 
part  by  name  when  he  called  it  4  caclomemis- beds/  1 
*  Bed  5,  with  the  numerous  large  specimens  of  Stephanoceras 
Banksi ,  is  an  easily-noted  horizon.  It  seems  to  be  a  separable,  third 
portion  of  the  Ironshot.  The  two  or  three  beds  below  are  those  from 
which  have  come  numerous  Stephanocerata  of  th q  Humphriesianum- 
type,  and  also,  subject  to  correction,  Poecilornorphus  cycloides,  Dor- 
setensia  Edouardicina,  D.  pulchra,D.  liostraca,  D.  complanata ,  D.  tecta , 
D.  subtecta,  Sphceroceras  Wrighti,  Sph.  Gervillii  (Sow.),  Lissoceras 
oolithicum  (d’Orb.).  At  this  horizon  is  the  acme  of  Stephanoceras , 
and  apparently  the  last  stage  of  the  paracme  of  the  Sonninince. 
Beds  1,  2  are  the  base  of  the  4  Buildihg-stohe,’  or  equivalent 
thereto.  Beds  3,  4,  and  perhaps  5,  may  illustrate  a  thicker  deposit 
laid  down  contemporaneously  with  that  at  Clatcombe  (p.  497)  marked 
niortensis  hemera ;  beds  3  and  4  are  certainly  equivalent  thereto. 
Bed  7  must  be  correlated  with  the  top  bed  of  Section  XIV.,  whereby 
this  Section  (XV.)  proves  that  there  can  be  little  wanting  between 
the  top  of  Section  XIY.  and  the  bottom  of  Section  XIII.  I  think  it 
very  probable  that  part  of  8  is  equivalent  to  part  of  3,  Section  XIY,, 
and  Bed  9  is  equivalent  to  all  or  part  of  the  Sandford  Lane  4  Fossil 
Bee.’  I  say  4  part,’  because  I  have  never  been  able  to  record  from 
this  quarry  any  of  the  Jissilohata-tyge  of  Ammonite,  nor  any  of 
the  species  allied  to  iSonninia  ’  Stephani ,  which  are  so  characteristic 
of  the  bottom  part  of  the  Sandford  Lane  4  Fossil  Bed.’  The  com¬ 
monest  and  most  characteristic  Ammonites  belong  to  -the  genus 
Witchellia ,  of  which  there  are  many  unnamed  species ;  and  this 
genus  is  far  more  numerously  represented  at  Frogden  than  at 
Sandford  Lane.  Species  of  the  propinquans- type  and  4  Stephano- 
ceras  ’  Sauzei  indicate  the  correlation  of  part  of  this  bed  with  the 
upper  part  of  the  Sandford  Lane  4  Fossil  Bed.’  I  seem  to  have  been 
far  more  fortunate  than  Mr.  Hudleston  in  finding  Sauzei  in  this 
bed ;  though  it  cannot  be  called  the  dominant  fossil,  it  is  the  one 
most  easily  identified.2  Little  of  the  strata  below  this  bed  was 
exposed,  which  is  to  be  regretted.  About  12  feet  below  it  strata 
of  the  concam  hemera  were  found,  and  some  belonging  perhaps  to 
that  of  cliscites:  at  any  rate  there  is  no  difficulty  in  correlating 
the  2  feet  shown  with  the  Beds  9-11  of  Sandford  Lane.  In  that 
case  there  is  a  great  thickness  of  strata  between  concavum  and 
Witchellia  which  certainly  wants  investigation. 
Some  twelve  years  ago,  when  I  had  the  opportunity  of  working 
in  this  quarry  frequently,  I  found  EhynchoneUa  ringens  in  the  bank 
below  and  recorded  it.3  I  could  not  do  so  on  this  occasion. 
About  |  mile  east  from  here,  on  the  other  side  of  the  village, 
1  ‘British  Jurassic  Gasteropoda,’  p.  47,  Palagont.  Soc.  1887.  2  Ibid.  p.  48. 
3  Quart.  Journ.  Geol.  Soc.  vol.  xxxvii.  (1881)  p.  589.  The  Specimens  are  in 
my  cabinet  now. 
