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Shimanskya is a late
Carboniferous fossil tentatively interpreted as an
early spirulid. This
identification was
based on: the well-developed phragmocone...
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extinct taxa.
Oldest representative: Carboniferous,
though contested: see
Shimanskya Oldest uncontested representative: Late Jur****ic Taxa
marked with † are...
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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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Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?:
Shimanskya...
-
Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?:
Shimanskya...
-
Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?:
Shimanskya...
-
Ellesmerocerida Orthocones: Endocerida, Orthocerida,
Actinocerida Brevicones: Ascocerida,
Oncocerida Earliest coiled cephalopods:
Tarphycerida Spirulid?:
Shimanskya...
