-
Berriasella is a
discoidal evolute perisphinctacean ammonite, and type
genus for the
neocomitid subfamily Berriasellinae. Its
ribbing is distinct, consisting...
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Berriasella jacobi is an
extinct species of
ammonite from the late Jur****ic and
early Cretaceous.
Because of its
unique stratigraphic position, it is...
- been
placed at the
first appearance of
fossils of the
ammonite species Berriasella jacobi. But this is a
species that has a
stratigraphically problematic...
-
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...
- 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...
- Endemoceratoidea.
Acanthodiscus Uhlig, 1905
Argentiniceras Spath, 1924
Berriasella Uhlig, 1905
Decliveites Aguirre-Urreta and Rawson, 2010
Delphinella Le...
