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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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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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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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Frogdenites is
included in the Otoitidae, a
family which makes up part of the
ammonitid superfamily, Stephanoceratoidea.
Frogdenites has an
evolute globular s****...
- 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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Neocomitidae is a
family of
Lower Cretaceous ammonitids comprising genera with
strongly ribbed evolute (all
whorls exposed) to smooth,
fairly involute...
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Pleurohoplites is a
genus in the
ammonitid family Hoplitidae,
found in
middle Cretaceous (Upper
Albian - Cenomanian) of Europe, and
included in the subfamily...
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Upper Cretaceous, and type for the Schloenbachiidae, a
family within the
ammonitid Hoplitoidea.
Schloenbachia was
named by Newmayer, 1875, the type species...
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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;...
-
Riasanites is an
Upper Jur****ic
ammonite belonging to the
ammonitid. Poland, USSR and
Yemen Notes Sepkoski, Jack (2002). "Sepkoski's
Online Genus Database"...
