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Perisphinctoidea,
formerly Perisphinctaceae, is a
superfamily of
Middle Jur****ic (Bajocian) to
Lower Cretaceous (Barremian) ammonites,
commonly with evolute...
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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...
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Upper Jur****ic
include the Stephanoceratoidea,
Perisphinctoidea, and Haploceratoidea; the
Perisphinctoidea and
Haploceratoidea continued well into the Cretaceous...
- Subclass:
Ammonoidea Order:
Ammonitida Suborder:
Ammonitina Superfamily:
Perisphinctoidea Family:
Perisphinctidae Genus:
Flabellisphinctes Mangold & Elmi, 1966...
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Eoderoceratoidean family, Polyorphitidae. The Stephanoceratoidea,
Perisphinctoidea, and
Haploceratoidea have
their source in the
Hammatoceratidae which...
- an
extinct ammonoid cephalopod genus belonging to the
superfamily Perisphinctoidea.
These fast-moving n****nic
carnivores lived during the
Upper Jur****ic...
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Berriasella is a
discoidal evolute perisphinctacean ammonite, and type
genus for the
neocomitid subfamily Berriasellinae. Its
ribbing is distinct, consisting...
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Tirnovella is an
extinct subgenus of
ammonoid cephalopod, from the
early Cretaceous. The
group is
often used as an
index fossil, with
Tirnovella alpillensis...
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Craspedites is an
ammonoid cephalopod included in the
Perisphinctoidea that
lived during the Late Jur****ic and
Early Cretaceous,
found in Canada, Greenland...
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Titanites is an
extinct ammonite cephalopod genus within the
family Dorsoplanitidae, that
lived during the late
Tithonian of the Late Jur****ic. Its fossils...
