-
phylloceratids which gave rise to the
great diversity of post-Tri****ic ammonites.
Ceratitids overwhelmingly produced planospirally coiled discoidal s**** that may...
-
ammonite in the
ceratitid family Tropitidae with
spines instead of
nodes on the
umbilical shoulder, at
least in
early whorls.
Ceratitids are
mostly Tri****ic...
-
Vredenburgites is a
genus of
ceratitids in the
family Trachyceratidae. Its s**** has numerous, thin,
flexious ribs.
Related genera include Anasirenites...
- The
Hungaritidae comprises a
family of
ceratitid ammonites described in the Treatise,(Arkell et al. 1957), as
involute compressed, discoidal, with keeled...
- Zone A
ceratitid Ammotibetites A.
wheeleri Longjiang Xishan A
ceratitid Anasibirites A. kingi****
Tulong Griesbachites–Guembilites Zone A
ceratitid Anatibetites...
- M****oceras is an
extinct genus of
ceratitid ammonites with a
discoidal s**** that
lived during the
Early Tri****ic Epoch. M****oceras is
characterized by...
-
thornlike projections. The
Phylloceratina are most
likely derived from the
Ceratitid Deineroceratidae,
which is
thought to have
given rise
early in the Tri****ic...
-
Arctoptychites is a
genus of
extinct cephalopods belonging to the
ceratitid family Ptychitidae, and
related to such
genera as
Ptychites and Aristoptychites;...
-
genus of
Ceratitids in the
family arpaditida. A.
kingi A
genus of
Ceratitids in the
family arpaditida.
Atractites A.
drakei A
genus of
Ceratitids in the...
- (2007). "The
Preservation of Body Tissues, S****, and
Mandibles in the
Ceratitid Ammonoid Austrotrachyceras (Late Tri****ic), Austria". In N. H. Landman;...
