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Troedssonellidae is a
family of
orthoceroid cephalopods from the Ordovician,
derived from rod-bearing Baltoceratidae, that have a
continuous lining within...
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Ordovician of
western North America,
belonging to the
Orthocerid family Troedssonellidae. The s**** of
Tajaroceras is
smooth and straight. The
siphuncle which...
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Dissidocerida as
understood includes the Polymeridae, Rangeroceratidae,
Troedssonellidae, and Dissidocertidae. The
Polymeridae and
Rangeroceratidae were proposed...
- Kingdom:
Animalia Phylum:
Mollusca class:
Cephalopoda Subclass:
Nautiloidea Order:
Orthocerida Family:
Troedssonellidae Genus:
Glenisteroceras Flower, 1957...
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separated from the
Orthocerida by
Zhuravleva (1964),
includes the
Troedssonellidae and two
small monogeneric orders, the
Polymeridae and Rangeroceratidae...
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reasonably derived from the
Baltoceratidae or less
likely from the
Troedssonellidae. Evencoceras, Rossoceras, and
Padunoceras have
their probable origin...
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Eleven families were included,
among which are the Orthoceratidae,
Troedssonellidae, Dawsonoceratidae, and Paraphragmitidae. With the
discovery of Zhuralevia...
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endoceroids and
suggest a
close relationship with the
Baltoceratidae or the
Troedssonellidae Flower, R.H. 1976. Some
Whiterock and
Chazy Endoceroids. Part II, Mem...
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Glenisteroceras and
Wolungoceras were
included tentatively in the
Troedssonellidae in the
Treatise (Sweet, 1964);
Cartersoceras and
Murrayoceras in the...
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Ordovician (Floian)
Valhallfonna Formation Norway A
member of the
family Troedssonellidae.
Cycloplectoceras hinlopense Sp. nov
Valid Kröger &
Pohle Ordovician...
