﻿144 
  

  

  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  Table 
  XYIII. 
  

  

  

  King's 
  

   Sutton. 
  

  

  Banbury. 
  

  

  Cherring- 
  

   ton 
  

  

  Cliarmouth. 
  

  

  © 
  go 
  

  

  3 
  'So 
  

  

  t>> 
  © 
  

  

  00 
  

  

  © 
  

  

  © 
  

  

  

  

  

  * 
  

  

  * 
  

  

  Cyclolites 
  cupnliforinis 
  ... 
  

   Lepidophyllia 
  hebridensis 
  . 
  

   Montlivaltia 
  f 
  oliacea 
  

  

  ... 
  

  

  * 
  

  

  * 
  

   * 
  

  

  ... 
  

  

  * 
  

  

  

  

  

  

  Thamnastreea 
  Etheridgii 
  . 
  . 
  . 
  

   Tricycloceris 
  Anningirc 
  ... 
  

  

  * 
  

  

  

  * 
  

  

  Total 
  

  

  2 
  

  

  2 
  

  

  3 
  a 
  

  

  2 
  1 
  

  

  

  

  

  

  

  

  

  The 
  Middle 
  Lias, 
  although 
  so 
  well 
  developed 
  in 
  England, 
  especially 
  

   in 
  Yorkshire 
  and 
  the 
  extreme 
  south 
  of 
  England 
  at 
  Lyme 
  Regis, 
  con- 
  

   tains 
  few 
  or 
  no 
  corals 
  in 
  any 
  of 
  the 
  zones, 
  of 
  which 
  5 
  are 
  readily 
  

   distinguished 
  ; 
  in 
  ascending 
  order 
  they 
  are 
  the 
  zones 
  of: 
  — 
  1st, 
  

   JEgoceras 
  Jamesoni 
  ; 
  2nd, 
  AmaltJieus 
  ibex; 
  3rd, 
  JEgoceras 
  Henleyi 
  ; 
  

   4th, 
  AmaltJieus 
  margaritatus 
  ; 
  and 
  5th, 
  AmaltJieus 
  spinatus, 
  above 
  

   which 
  conformably 
  rests 
  the 
  Upper 
  Lias. 
  This 
  is 
  not, 
  however, 
  the 
  

   place 
  to 
  fully 
  discuss 
  the 
  fauna 
  of 
  these 
  zones. 
  That 
  of 
  the 
  zone 
  of 
  

   JEgoceras 
  Jamesoni 
  is 
  large 
  and 
  remarkable, 
  including 
  no 
  less 
  than 
  

   15 
  species 
  of 
  Ammonites 
  and 
  24 
  species 
  of 
  Bclemnites, 
  12 
  genera 
  and 
  

   28 
  species 
  of 
  Gasteropoda, 
  31 
  genera 
  and 
  03 
  species 
  of 
  Lamelli- 
  

   branchiata, 
  16 
  species 
  of 
  Erachiopoda, 
  7 
  genera 
  and 
  9 
  species 
  of 
  

   Crustacea, 
  species 
  of 
  Annelida, 
  5 
  genera 
  and 
  8 
  species 
  of 
  Echino- 
  

   dermata, 
  and 
  14 
  genera 
  of 
  Eoraminifera 
  with 
  48 
  species. 
  Oxford- 
  

   shire, 
  Somersetshire, 
  Dorsetshire, 
  Yorkshire, 
  with 
  Pabba, 
  Scalpa, 
  

   Skye, 
  Eaasay, 
  and 
  the 
  Hebrides, 
  show 
  the 
  wide 
  distribution 
  of 
  the 
  

   zone 
  of 
  Am. 
  Jamesoni. 
  The 
  fossils 
  from 
  this 
  zone 
  of 
  the 
  Hebridean 
  

   Jura 
  have 
  been 
  carefully 
  studied 
  by 
  Dr. 
  Wright, 
  F.R.S.f 
  They 
  are 
  

   essentially 
  the 
  same 
  as 
  those 
  of 
  mid-England, 
  Yorkshire, 
  or 
  Dor- 
  

   setshire. 
  In 
  Somersetshire 
  all 
  three 
  zones 
  of 
  Jamesoni, 
  ibex, 
  and 
  

   Henlei/i 
  have 
  so 
  thinned 
  away 
  as 
  to 
  be 
  comprised 
  in 
  9 
  feet 
  of 
  strata 
  ; 
  

   but 
  even 
  in 
  this 
  insignificant 
  thickness 
  there 
  occur 
  12 
  species 
  of 
  

   Ammonites, 
  10 
  genera 
  and 
  18 
  species 
  of 
  Gasteropoda, 
  21 
  genera 
  

   and 
  28 
  species 
  of 
  Lamellibranchiata, 
  and 
  6 
  genera 
  and 
  14 
  species 
  of 
  

   Brachiopoda. 
  

  

  Foreign 
  Equivalents 
  or 
  correlation. 
  — 
  North 
  and 
  South 
  Germany 
  

   possess 
  this 
  extensive 
  zone 
  of 
  the 
  Middle 
  Lias; 
  it 
  is 
  the 
  equiva- 
  

   lent 
  of 
  the 
  Numismalis 
  Marl 
  of 
  Swabia. 
  The 
  ironstone 
  beds 
  worked 
  

  

  t 
  "Notes 
  on 
  the 
  Fossil 
  Collection, 
  by 
  Mr. 
  Geikie, 
  from 
  the 
  Lias 
  of 
  the 
  Isles 
  

   of 
  Pabba, 
  Scalpa, 
  and 
  Skye," 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xiv. 
  p. 
  24 
  (1858). 
  

  

  