-
Bifericeras is a
Lower Jur****ic
ammonite belonging to the
family Eoderoceratidae, and
sometimes placed in the
subfamily Xipherceratinae.
Whorls are strongly...
- egg production. A good
example of this ****ual
variation is
found in
Bifericeras from the
early part of the Jur****ic
period of Europe. Only
recently has...
- the
Pliensbachian is at the
first appearances of the
ammonite species Bifericeras donovani and
genera Apoderoceras and Gleviceras. The Wine
Haven profile...
- the
Pliensbachian is
defined by the
first appearance of the
ammonite Bifericeras donovani. The
village Thouars (Latin: Toarcium), just
south of Saumur...
- the Pliensbachian) is at the
first appearances of the
ammonite species Bifericeras donovani and
ammonite genus Apoderoceras. The
Sinemurian contains six...
-
Coeloceratidae Genera that have been
attributed to the
Xiphoceratinae are
Bifericeras, Microderoceras, and Xipheroceras.
Those attributable to the Eoderoceratinae...
- has ****igned the
First Appearance Datum of
genus Apoderoceras and of
Bifericeras donovani the
defining biological marker for the
start of the Pliensbachian...
-
Robin Hood's Bay, Yorkshire, England, U.K. Biologic:
First appearance of
Bifericeras donovani and
genera Apoderoceras (Ammonite). 54°24′25″N 0°29′51″W /...
-
Beudantiella Bevahites Beyrichites Beyrichoceras Beyrichoceratoides Bhimaites Bifericeras Bigotites Bihenduloceras Bilinguites Billcobbanoceras Biloclymenia Biltnerites...
-
genus Proleptolepis.
Ammonites are also common, such as Oxynoticeras,
Bifericeras,
Cheltonia and Plesechioceras. Finally, this
section is
known for its...
