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Perisphinctoidea,
formerly Perisphinctaceae, is a
superfamily of
Middle Jur****ic (Bajocian) to
Lower Cretaceous (Barremian) ammonites,
commonly with evolute...
-
Upper Jur****ic
include the Stephanoceratoidea,
Perisphinctoidea, and Haploceratoidea; the
Perisphinctoidea and
Haploceratoidea continued well into the Cretaceous...
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Acanthoceratoidea are
known only from the Cretaceous.
Still others like the
Perisphinctoidea are
found in both.
Wikispecies has
information related to Ammonitida...
- an
extinct ammonoid cephalopod family belonging to the
superfamily Perisphinctoidea.
These fast-moving n****nic
carnivores lived from the Jur****ic to the...
- at the end of the Jur****ic. This
family forms the root
stock of the
Perisphinctoidea which gave rise
directly or
indirectly to the
other perisphinctoid...
-
confined to the
Upper Jur****ic of Europe,
included in the
superfamily Perisphinctoidea.
Previously Ataxioceras was ****igned to the
Perisphinctidae but has...
- an
extinct ammonoid cephalopod family belonging to the
superfamily Perisphinctoidea.
These fast-moving n****nic
carnivores lived during the Cretaceous...
-
Craspedites is an
ammonoid cephalopod included in the
Perisphinctoidea that
lived during the Late Jur****ic and
Early Cretaceous,
found in Canada, Greenland...
- and
upper Jur****ic
ammonites that make up part of the
superfamily Perisphinctoidea,
characterized by
evolute s****,
commonly stocky, that tend to develop...
-
Himalayitidae is an
extinct family of
ammonites in the
superfamily Perisphinctoidea. The
family existed from the
Tithonian of the Jur****ic to the Berriasian...
