-
Berriasella is a
discoidal evolute perisphinctacean ammonite, and type
genus for the
neocomitid subfamily Berriasellinae. Its
ribbing is distinct, consisting...
-
Berriasella jacobi is an
extinct species of
ammonite from the late Jur****ic and
early Cretaceous.
Because of its
unique stratigraphic position, it is...
-
appearance of the
ammonite Strambergella jacobi,
formerly placed in the
genus Berriasella, but its use as a
stratigraphic indicator has been questioned, as its...
-
appearance of the
ammonite Strambergella jacobi,
formerly placed in the
genus Berriasella, but its use as a
stratigraphic indicator has been questioned, as its...
- been
placed at the
first appearance of
fossils of the
ammonite species Berriasella jacobi. But this is a
species that has a
stratigraphically problematic...
- Magnetic—base of
Chron M18r Base of
Calpionellid zone B FAD of
Ammonite Berriasella jacobi Lower boundary GSSP
candidate section(s) None
Upper boundary definition...
- Crimea,
south of Yalta.
Remains found there include: ammonites, such as
Berriasella, and brachiopods. V. V. Arkad’ev; A. A. Fedorova; Yu. N. Savel’eva &...
-
definition candidates Magnetic—base of
Chron M18r Base of
Calpionellid zone B FAD of
Ammonite Berriasella jacobi Upper boundary GSSP
candidate section(s) None...
-
definition candidates Magnetic—base of
Chron M18r Base of
Calpionellid zone B FAD of
Ammonite Berriasella jacobi Upper boundary GSSP
candidate section(s) None...
- as the Neocomitinae.
Berriasellinae includes the
genera Andiceras,
Berriasella, Blanfordiceras, Delphinella, Elenaella, Jabronella, Parandiceras, Raimondiceras...
