40 
MISS  OGILYIE  ON  THE  WENGEN  AND 
[Feb.  1893, 
The  whole  series  is  not  more  than  200  feet  thick  and  rests  upon 
the  Schlern  Dolomite.  The  same  series  is  again  favourably  exposed 
in  the  neighbourhood  of  Valparola  Alphiitten,  north  of  Sett  Sass. 
There  I  found  more  fossils,  among  them  a  small  Megalodon  (species 
not  easily  identified),  Corbis  Mellingi,  and  several  specimens  of 
Myophoria  Kefersteini.1 
Some  beds,  apparently  at  the  base  of  the  Baibl  strata,  were  ex¬ 
posed  in  the  course  of  the  Eisenofen  Bach  some  little  distance  above 
the  huts — hard,  yellow-weathering  limestone,  with  spines  of  various 
species  of  Cidaris  and  fragments  of  Pentacrinus  tirolensis ,  Laube  ; 
also  a  light-coloured  dolomite  aud  dolomitic  limestone  full  of  a 
lithodendroid  coral. 
II.  Heiligkreuz.  ( Compare  fig.  4,  p.  26.) 
The  Baibl  strata  exposed  below  the  Dachstein  Dolomite  of  Kreuz 
Kofi  consist  essentially  of  three  series.  The  uppermost  horizons  are 
thicker  here  than  at  Sett  Sass.  The  succession  is,  in  descending 
order : — 
Variegated  marls,  interstratified  with  dolomitic  shales  and  limestones. 
Thick  banks  of  limestone  and  dolomitic  limestone,  interstratified  with 
dolomitic  marls.  Occasional  beds  of  a  reddish  breccia  and  of  a  hard 
siliceous  limestone,  with  a  few  cidarid  spines  and  encrinite-remains. 
Sandstones  and  breccias  with  plant-remains  and  lignite,  Ostrcea- limestone 
and  Lumachellen-limestone,  very  fossiliferous  :  Fimbria  ( Corbis )  Mellingi, 
Hauer,  sp. ;  Ostrcea  montis-caprilis,  Klipst.,  etc. 
(See  Part  VIII.  of  this  paper,  p.  64.) 
III.  Falzarego,2  Cortina.  ( Compare  figs.  6,  7,  8,  pp.  29,30.) 
The  Baibl  strata  throughout  this  part  of  Ampezzo  have  much 
the  same  development  as  at  Heiligkreuz.  The  higher  beds  form  a 
series  of  terraces  on  Col  dei  Bos  by  the  alternation  of  the  variegated 
dolomitic  marls  with  hard  beds  of  dolomite  corresponding  to  the  two 
lower  beds  in  the  Heiligkreuz  section  (thickness  about  360  feet). 
The  fossiliferous  lower  horizon,  with  a  thickness  of  50-70  feet, 
rests  conformably  on  Schlern  Dolomite,  here  apparently  not  more 
than  300  feet  thick.  Below  the  escarpment  of  Schlern  Dolomite, 
in  the  neighbourhood  of  the  Boces  Alphiitten,  is  a  wooded  hill 
entirely  made  up  of  dolomite-blocks. 
On  the  opposite  side  of  the  Costeana  stream,  the  Baibl  strata 
are  again  exposed.  The  beds  of  the  lower  fossiliferous  horizon 
are  seen  striking  towards  Ospizio  and  dipping  at  a  high  angle. 
In  these  strata  I  collected  a  number  of  typical  Baibl  species, 
viz. : — Trigonodus  rablensis ,  Gredl.,  sp. ;  Ostrcea  montis-caprilis , 
Klipst.;  Fimbria  ( Corbis )  Mellingi ,  Hauer;  Megalodon ,  cf.  com- 
planatus ,  Wohrm.  ;  Megalodon ,  sp.  indet. ;  Placunopsis ,  sp.  indet. ; 
Cidaris  Braunii,  Desor. 
1  See  Loretz,  Zeitschr.  d.  Deutsch.  geol.  Gesellsch.  vol.  xxvi.  (1874)  p.  378. 
2  Ibid.  p.  448,  etc. ;  and  Mojsisovics,  4  Dolomit-Riffe,’  p.  260. 
