8 
MISS  OGHYXE  OX  THE  WEXGEX  AXE 
Teb.  1S93, 
and  Wetterstein  Kalk.  But  in  later  papers  (1862,  1S66,  etc.  A  he 
changed  his  opinion,  mainly  on  strati  graphical  grounds,  and  gave 
two  horizons  with  Cardita  crenata ,  Goldf.,  the  succession  being  as 
follows  :  — 
Upper  horizon  of  Cardita  crenata ,  Goldf. 
=  Cardita- strata  of  Gumbel. 
=  Kaibl  strata  of  Hauer. 
Strata  with  Chemnitzia  Bosthorni,  Hoern. 
=  Wetterstein  Kalk. 
Lower  horizon  of  Cardita  crenata,  Goldf. 
==  St.  Cassian  strata  of  Eiehthofen. 
—  Partnaeh  strata  of  Giimbel,  or  strata  with  Halobia  Lommeli  of 
Giimbel  and  other  authors. 
Wojsisovics1  2  accepted,  in  the  main,  Pichler’s  horizons  and  gave 
(in  1  869 )  the  following  succession  (in  descending  order! : — 
Seefelder  Dolomit  =  Hauptdolomith 
Wetterstein  Kalk. 
Cardita  {=  St.  Cassian'  -beds. 
Holomitic  bmestone  ^Haselgebirge  and  Keiehenhaller  Kalk  . 
Partnaeh  dolomite. 
Partnaeh  strata  with  Halobia  Lommeli ,  Wissm.,  and  St.  Cassian  fossils. 
In  1871  Mojsisovics 3  recognized  even  three  Cardita  crenata- 
horizons,  although  they  were  lithologically  and  paleontologically 
the  same.  The  third  of  these  horizons  he  introduced  above  the 
TTetterstein  Kalk  as  being  the  equivalent  of  Baibl  strata.  A  year 
later  4  he  struck  out  the  Cardita- zone  below  the  Wetterstein  Kalk. 
saving  that  the  Cardita- beds  above  the  Wetterstein  Kalk  were  the 
equivalent  of  St.  Cassian  strata.  But,  in  ls74.:  Mojsisovic-s  returned 
to  his  opinion  that  the  Cardita- beds  above  the  Wetterstein  Kalk 
were  Baibl  strata,  containing  a  fauna  which  would  probably  on 
closer  study  be  found  to  differ  from  the  St.  Cassian  fauna. 
As  may  be  seen  from  the  above  references,  the  question  of  the 
relative  ages  of  these  fossiliferous  strata  has  given  rise  to  great 
confusion  in  the  literature.  This  is  largely  owing  to  the  difficulty 
of  attaining  a  sound  knowledge  of  the  stratigraphy  of  the  Triassie 
rocks.  Like  other  formations  in  the  Alps,  they  have  been  much 
folded  and  faulted,  and  names  were  given  to  the  fossiliferous  beds 
before  any  comparison  of  the  succession  in  different  regions  could 
be  reasonablv  made.  In  eve rv  case  the  succession  must  be  deter- 
*  * 
mined  for  itself,  as  no  formation  in  Korthern  and  Southern  Tyrol 
or  in  Bavaria  presents  so  many-sided  a  development  as  the  Trias. 
A  careful  study  of  the  Cardita-  and  Baibl  strata  of  the  Korthem 
1  ‘Zur  Geognosie  Tirols,’  Jahrb.  d.  k.  k.  geol.  Beichsanstalt,  1862,  p.  53l ; 
‘  Cczr^Yff-Schichten  und  Hauptdolomit,'  ibid.  1666.  p.  73. 
2  ‘Leber  die  Gliederung  der  oberen  Triasbildungen  der  Alpen,’  Yerhandl. 
d.  k.  k.  geol.  Beichsanstalt,  1869,  p.  65. 
3  ‘  Leber  die  Stellung  der  Kord-tiroler  CV?7yfkff-Schichten.’  ibid.  1871,  p.  213. 
4  ‘  Parallelen  in  der  oberen  Trias  der  Alpen.’  ibid.  1872,  p.  7. 
0  ‘  Faunengebiete  und  Faciesgebilde  der  Xriasperiode  in  den  Ostalpen, 
Jahrb.  d.  k.  k.  geol.  Beichsanstalt,  1874,  p.  81. 
