- extinct, (typically) coiled-s****ed
cephalopods comprising the
subclass Ammonoidea. They are more
closely related to
living octopuses, squid, and cuttlefish...
-
cephalopods have been identified. Two
important extinct taxa are the
Ammonoidea (ammonites) and
Belemnoidea (belemnites).
Extant cephalopods range in...
- the Anarcestida, is the
ancestral order within the
cephalopod subclass Ammonoidea originating from
bactritoid nautiloids, that
lived in what
would become...
-
Acanthoceras is an
extinct cephalopod genus belonging to the
subclass Ammonoidea and
family Acanthoceratidae that
lived from the
Albian to
early Coniacian...
-
primarily orthoconic orders (including the
ancestors for
Bacritida and
Ammonoidea); and Nautilitoidea,
which includes the
first coiled cephalopods, Tarphycerida...
- dictionary.
Ammonites are an
extinct group of
marine animals, including:
Ammonoidea, a
subclass Ammonitida, an
order Ammonitina, a
suborder Ammonite may also...
-
Eleniceras is an
extinct genus of
cephalopods belonging to the
Ammonoidea subclass. The
genus was
named after the
Bulgarian town of Elena. The holotype...
-
Calycoceras is an
extinct genus of
cephalopods belonging to the
subclass Ammonoidea and
family Acanthoceratidae that
lived during the
Cenomanian stage of...
- a
comprehensive listing of
genera that are
included in the
subclass †
Ammonoidea,
excluding purely vernacular terms. The list
includes genera that are...
-
extinct genus of
ammonite from the
later Cretaceous belonging to the
Ammonoidea family Gaudryceratidae.
Anagaudryceras has a
moderately involute s****...
