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Desmoceratoidea,
formerly Desmocerataceae, is a
superfamily of
Cretaceous ammonites,
generally with
round or oval-whorled s**** that are
mostly smooth...
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Psiloceratoidea from the
Lower Jur****ic
stands alone. The
Cretaceous Desmoceratoidea are
derived from the
Phylloceratina separately from Jur****ic forms...
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Fournierella is a
member of the Muniericeratidae, a
family of
Upper Cretaceous ammonites characterized by
moderately evolute s**** with
strong sinuous...
- to the
Psiloceratoidea at the
beginning of the Jur****ic and to the
Desmoceratoidea in the
Early Cretaceous, both of
which are
considered Ammonitina. The...
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Karapadites is an
extinct ammonoid genus belonging to the
desmoceratacean family Kossmaticeratidae and
considered by some to be a
subgenus of Kossmaticeras...
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Kossmaticeras is an
extinct ammonoid genus belonging to the
desmoceratacean family Kossmaticeratidae.
Species in this
genus were fast-moving n****nic carnivores...
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Desmoceratidae is a
family belonging to the
ammonite superfamily Desmoceratoidea. They are an
extinct group of ammonoids, s****ed
cephalopods related...
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Holcodiscidae (indirect, from Olcostaphanidae)(now
placed in the
suberfamily Desmoceratoidea) (Lower
Cretaceous Perisphinctoidea (Berriasan - Hauterivien) Berriasellidae...
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Urakawites is an
extinct ammonite from the
Upper Cretaceous (Campanian) of ****an, Sakhalin, Russia,
British Columbia,
Canada and
possibly Germany and Angola...
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Astieridiscus is an
extinct lower Cretaceous ammonite. Its s**** evolute,
covered by dense,
simple or branching,
slightly flexuous ribs. The
sides are...
