Nautilitoidea

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'''Nautilitoidea''' is a superorder of [[Nautiloidea|nautiloid]] cephalopods, proposed by Mary Wade, 1988, that comprises the [[Tarphycerida]], [[Oncocerida]], and [[Nautilida]]. The Nautilitoidea has its origin in the [[Ellesmerocerida|ellesmerocerid]] Bassleroceratidae, sometimes included in the Tarphycerida instead.  
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'''Nautilitoidea''' is a superorder of [[Nautiloidea|nautiloid]] cephalopods, proposed by Mary Wade, 1988, that comprises the '''Tarphycerida''', '''Oncocerida''', and '''Nautilida'''. The Nautilitoidea has its origin in the [[Ellesmerocerida|ellesmerocerid]] Bassleroceratidae, sometimes included in the Tarphycerida instead.  
The Natilitoidea are united phylogenetically and share characters of being generally exograstric or coiled.  They include the only coiled nautiloids, unless the [[Lituitidae]] actually do belong in the [[Orthocerida]].  
The Natilitoidea are united phylogenetically and share characters of being generally exograstric or coiled.  They include the only coiled nautiloids, unless the [[Lituitidae]] actually do belong in the [[Orthocerida]].  
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=== Orders included===
=== Orders included===
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'''Tarphycerida'''. First of the coiled nautiloidea, and first coiled cephalopods. Includes the Tarphycerina, a monophyletic suborder that gave rise to the probably polyphyletic Barrandeocerina and contains the anomalous "Lituitida".   
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[[Tarphycerida]]. First of the coiled nautiloidea, and first coiled cephalopods. Includes the [[Tarphycerina]], a monophyletic suborder that gave rise to the probably polyphyletic [[Barrandeocerina]] and which gave rise to the anomalous [[Lituitida]].   
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'''Oncocerida'''. Small to medium size nautiloids that split off from the early Tarphycerida, derived from the bassleroceratid Graciloceratidae, which gave rise to the Nautilida.
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[[Oncocerida]]. Small to medium size nautiloids that split off from the early Tarphycerida, derived from the bassleroceratid [[Graciloceratidae]], which gave rise to the Nautilida.
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'''Nautilida'''. Mostly advanced coiled nautilitoidea the extend into the present with the extant genera ''[[Nautilus]]'' and ''[[Allonautilus]]''. Derived from the Oncocerida and divided into five superfamilies.
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[[Nautilida]]. Mostly advanced coiled nautilitoidea the extend into the present with the extant genera ''[[Nautilus]]'' and ''[[Allonautilus]]''. Derived from the Oncocerida and divided into five superfamilies.
The Oncocerida extend to the end of the [[Mississippian]] (L Carboniferous), the Tarphycerida included the barrandeoceratids, to the end of the Middle [[Devonian]].  
The Oncocerida extend to the end of the [[Mississippian]] (L Carboniferous), the Tarphycerida included the barrandeoceratids, to the end of the Middle [[Devonian]].  

Revision as of 12:47, 15 July 2014

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