Vol.  49.] 
ST.  CASStAX  STRATA  IX  SOLinEEX  TYROL. 
to  the  conclnsion  that  these  Eaibl  strata  were  identical  with  the 
Cardita- beds  of  Northern  Tyrol. 
Von  Giimbel 1  had  in  1857  stated  that  the  Ca  G '.‘fa-beds  overlying 
the  Wetterstein  Kalk  were  the  true  equivalent  of  the  St.  Cassian 
strata. 
In  1859  von  Bichthofen,2  who  had  been  working  in  the  87. 
Cassian  district  and  in  the  Vorariberg,  expressed  his  opinion  that 
the  Cardita  crenataJye&s  in  the  last-named  area  ought  to  be  in¬ 
cluded  with  the  Eaibl  strata  :  but  that  in  Northern  Tyrol,  and  in 
the  Northern  Alps  generally,  the  Chrcfrfa-becls  ranged  lower  than 
the  Eaibl  strata  in  Southern  Tyrol,  and  that  therefore  their  fauna 
more  closely  resembled  the  St.  Cassian  fauna. 
In  the  literature  of  this  period  the  Eaibl,  Cardita-.  and  St. 
Cassian  strata  were  understood  to  belong  generaliv  to  the  same 
horizon,  and  the  various  names  began  to  be  rather  loosely  applied  to 
fossiliferous  beds  in  the  Upper  Triassic  Series  of  Northern  and 
Southern  Tyrol. 
Before  leaving  this  subject,  it  ought  to  be  mentioned  that  the 
subdivisions  made  by  Hauer  and  Toetterle  for  the  Eaibl  strata 
near  Eaibl  were  corroborated  some  10  years  later,  and  con¬ 
siderable  clearness  attained,  by  means  of  the  detailed  examination 
of  these  beds  made  by  Suess 3 ;  this  author  also  suggested  an 
interesting  comparison  with  the  strata  in  Southern  Tyrol. 
A  further  paper  on  the  subject  was  contributed  by  Star,4  who 
published  with  it  the  first  map  of  the  Eaibl  and  Ivaltwasser  district. 
The  opinion  of  Stur  that  the  lowest  subdivision  or  Eaibl  strata 
made  by  Foetterle  corresponded  with  the  VTengen  Beds  containing 
Halohia  Lommeli  in  Southern  Tyrol  has  not  since  been  accepted, 
the  palaeontological  evidence  adduced  by  him  being  afterwards 
corrected  by  Vlojsisovics.  Comparison  is  now  made  between 
this  horizon,  the  so-called  •  Fischsehiefer.’  in  the  Eaibl  Beds  and 
4  Aonschiefer/  a  horizon  of  St.  Cassian  strata  (see  a  footnote  in 
hloisisovics*  work  4  Dolomit-Biffe/  p.  61). 
By  means  of  the  work  of  Sandberger  5  and  Ciiimbel 5  on  extra- 
Alpine  Reaper  in  Bavaria,  comparison  was  made  between  the  Eaibl 
strata  in  the  Alps  and  the  4  Gypskeuper  ?  of  Franconia. 
Pichler,’  in  several  papers  published  before  1862,  placed  the 
strata  with  Cardita  crenata,  Goldf.,  between  what  he  called  1  upper 
and  middle  Alpenkalk,"  corresponding  respectively  to  Hauptdolomit 
1  ‘  Die  Aequivalente  der  St.  Cassianer  Sehichten  im  Keuper  Frank ens, 
Jahrb.  d.  k.  k.  geoL  Reichsanstalt,  1859.  p.  22. 
-  *  Die  Baikal  oen  toil  Yorarlberg  n.  Vord- Tirol,'  ibid.  p.  101. 
3  ‘  Studien  ifoer  die  Gliederung  der  Trias-  und  Jura-Bildungen  in  den 
bs<hchen  Alpen,’  von  Eduard  Suess  und  Edmund  von  Mojsisovics,  ibid. 
1867,  p.  553. 
4  ‘Beitrage  zur  Kenntniss  der  geoL  Verhaltnisse  der  Fmgegend  von  Eaibl 
und  Kaltwasser,’  ibid.  1868,  p.  71. 
'  Die  Stellung  der  Raibier  Sehichten  in  dem  Frankisehen  und  Schwab- 
ischen  Eeuper,’  Veues  Jahrb.  1S66,  p.  31. 
b_  ;  Bavaria,’  vol.  iv.  I.  p.  53  (G-eoiogy  by  Gum  belt 
‘  2ur  Geognosie  der  Tyroler  Alpen,’  Veues  Jahrb.  1857-  p.  691, 
