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Kazushige (2012). "Taxonomy,
morphology and
phylogeny of Late
Cretaceous spirulid coleoids (Cephalopoda) from
Greenland and Canada". Palaeontology. 55 (2):...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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coleoids such as the
cuttlebone of
cuttlefish and the "rams horn" s**** of
spirulids. The s**** are
weakly mineralized with the
presence of soft
tissues and...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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Groenlandibelidae is a
family of
coleoid cephalopods believed to
belong to the
spirulids. Morphologically, its taxa seem to have some
belemnoid characteristics...
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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?: Shimanskya...
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Phragmoteuthida and
squid from Diplobelida,
making Belemnoidea paraphyletic. The
spirulid Longibelus could be a
transitional species between belemnoids and squid...
