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Ammonoids are extinct, (typically) coiled-s****ed
cephalopods comprising the
subclass Ammonoidea. They are more
closely related to
living octopuses, squid...
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Coilopoceras is a compressed, involute,
lenticular ammonitid from the
Cretaceous (Albian to Turonian), with a
narrow venter and
raggedy ammonitic suture;...
- Hyatt, is
included in the
arietitid family of the Psiloceratoidea, an
ammonitid superfamily. Its
distribution is
fairly worldwide,
having been
found in...
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Riasanites is an
Upper Jur****ic
ammonite belonging to the
ammonitid. Poland, USSR and
Yemen Notes Sepkoski, Jack (2002). "Sepkoski's
Online Genus Database"...
- goniatitic. The
Ammonitina are
derived from the Phylloceratina,
another ammonitid suborder which has its
origin in the
Ceratitida of the Tri****ic. As with...
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Hyperlioceras is an
extinct genus of
cephalopod included in the
ammonitid family Graphoceratidae that
lived during the
Bajocian stage of the
Middle Jur****ic...
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chamber is
smooth with a
rounded venter.
Callihoplites is a
member of the
ammonitid family Hoplitidae and
superfamily Hoplitoidea, now also
known as the Hoplitoidea...
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Promicroceras is
included in the
family Eoderoceratidae,
which is part of the
ammonitid superfamily Eoderoceratoidea. S**** are
evolute with an open umbilicus;...
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Rollerites is a Jur****ic
ammonite belonging to the
ammonitid. France,
Saudi Arabia and
Switzerland Notes Sepkoski, Jack (2002). "Sepkoski's
Online Genus...
-
ammonite from the
Turonian of the
western U.S. and
Europe belonging to the
ammonitid family Collignoniceratidae. The
genus is
named after the
French paleontologist...
