-
Intermediate between serpenticones and
oxycones:
narrow and
moderately involute.
Discocone –
Intermediate between oxycones and spherocones:
involute and moderately...
- in Germany, Poland, and Israel.
Beneckeia s**** are
compressed smooth oxycones,
involute with
sharp venters.
Sutures are
multilobed with
small adventitious...
-
Lower Jur****ic
consisting of
genera characterised by
stigated discoidal oxycones—narrow
involute s**** with
narrowly rounded to
angular venters that bear...
- has been
found in Kelat, Baluchistan, in today's ****stan. Its involute,
oxycone s**** has very
small umbilicus and
umbilical wall is
smoothly rounded....
- ribbing.
While some
members are
involute and some
Oxynoticeratidae were
oxycone, most of the
species were evolute.
Psiloceratidae -
Evolute s**** with...
- large,
reaching diameters of 33 cm (13 in)or so,
forming smooth,
involute oxycones with
narrow or
sharp rims and
closed umbilici.
Forbesiceras (in French)...
- the
Oppeliidae from the
Upper Jur****ic, s**** of
which are
typically oxycones with a
tricarinate venter and
falcoid ribbing,
commonly divided by a median...
- Sinemurian.
Animals belonging to this
genus had
small s**** that had
oxycone whorl section and
sharp venter when young. In the case of
older specimens...
-
Raricostatum zone of
lower Pliensbachian. S**** of
these animals were
oxycone and
involute with
umbilicus that took
maximum of 12% of
diameter in the...
- Sinémurien inférieur de
Bourgogne (France): un rare précurseur des
morphologies oxycônes pour le Jur****ique" (PDF). Geodiversitas. 34 (3): 517–529. doi:10.5252/g2012n3a4...
