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- The Actinocerida are an order of generally straight, medium to large cephalopods that lived during the early and middle Paleozoic, distinguished by a siphuncle composed of expanded segments that extend into the adjacent chambers, in which deposits formed within contain a system of radial canals and a narrow space along the inner side of the connecting ring known as a paraspatium. (Teichert 1964) Septal necks are generally short and cyrtochoanitic, some being recumbent, some hook shaped. Most grew to lengths of about 60 to 90 cm (2.0 to 3.0 ft) but some, like the Huroniidae of the Silurian grew significantly larger. (en)
- Actinocerida Teichert, 1933 è un ordine di molluschi cefalopodi estinti, appartenenti alla sottoclasse Nautiloidea, conosciuti dall'Ordoviciano Medio al Carbonifero Superiore. (it)
- Actinocerida - rząd wymarłych głowonogów z podgromady łodzikowców. (pl)
- Ascocerida — вимерлий ряд головоногих молюсків підкласу Orthoceratoidea, що існував в ордовицькому, силурійському та девонському періодах. Рідкісні зразки відомі до середини карбону. Викопні рештки представників ряду знайдені по всій північній півкулі. (uk)
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- 7385 (xsd:nonNegativeInteger)
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- The holotype of Actinoceras beloitense from Wisconsin.jpg (en)
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- The holotype specimen of Actinoceras beloitense in UW–Madison Geology Museum (en)
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- General form of an Actinocerid (en)
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- The Actinocerida are an order of generally straight, medium to large cephalopods that lived during the early and middle Paleozoic, distinguished by a siphuncle composed of expanded segments that extend into the adjacent chambers, in which deposits formed within contain a system of radial canals and a narrow space along the inner side of the connecting ring known as a paraspatium. (Teichert 1964) Septal necks are generally short and cyrtochoanitic, some being recumbent, some hook shaped. Most grew to lengths of about 60 to 90 cm (2.0 to 3.0 ft) but some, like the Huroniidae of the Silurian grew significantly larger. (en)
- Actinocerida Teichert, 1933 è un ordine di molluschi cefalopodi estinti, appartenenti alla sottoclasse Nautiloidea, conosciuti dall'Ordoviciano Medio al Carbonifero Superiore. (it)
- Actinocerida - rząd wymarłych głowonogów z podgromady łodzikowców. (pl)
- Ascocerida — вимерлий ряд головоногих молюсків підкласу Orthoceratoidea, що існував в ордовицькому, силурійському та девонському періодах. Рідкісні зразки відомі до середини карбону. Викопні рештки представників ряду знайдені по всій північній півкулі. (uk)
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- Actinocerida (en)
- Actinocerida (it)
- Actinocerida (pl)
- Actinocerida (uk)
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