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Oncoceratidae is a
family of
nauatiloid cephalopods in the
order Oncocerida established by Hyatt, 1884, that
range from the
Middle Ordovician to the Upper...
- the
order consists of some 16 families, a few of which, such as the
Oncoceratidae, Brevicoceratidae, and
Acleistoceratidae contain a fair
number of genera...
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Slender Oncoceratidae are
those in the
family Oncoceratidae, (Nautiloidea, Oncocerida)
which have slender,
commonly curved, s****. Some like Oocerina...
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transverse sections. The
Brevicoceratidae are
derived from
Oonoceras (
Oncoceratidae) and
range from the mid-Silurian to the
Upper Devonian. Brevicoceratidae...
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Ordovician (Katian)
Adila Formation Estonia A
member of the
family Oncoceratidae.
Columenoceras kyushuense Sp. nov
Valid Niko
Silurian (Ludlow) Gionyama...
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Europe and
which is
similar in
external form the
Oonoceras from the
Oncoceratidae.
Blakeoceras Bolloceras Conostichoceras Cyrthoceratites Lorieroceras...
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Oncoceras is a
genus of oncocerids,
family Oncoceratidae from the
middle and
upper Ordovician of
North America and Europe. The s****, or conch, of Oncoceras...
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family Oncoceratidae from the
Middle Ordovician to
Middle Silurian of
North America and Europe,
arbitrarily included in the
Slender Oncoceratidae. S****...
- a
handful of species. Zittleoceras,
which is
included in the
family Oncoceratidae, is
characterized by
subcircular or
slightly depressed cyrtoconic s****...
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thick connecting rings. They are also the most
likely source for the
Oncoceratidae, Tripteroceratidae, and
Valcouroceratidae (Flower 1950). The Graciloceratidae...
