Nautilitoidea

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(Revised appearance)
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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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<u> Systematic Paleontology </u><br/>
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Class: [[Cephalopoda]] <br/>
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Subclass: [[Nautiloidea]] <br/>
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Superorder: '''Natuilitoidea''' <br/>
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Orders: See text.  
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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===
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The '''Nautilitoidea''' is a superorder of [[Nautiloidea|nautiloid]] cephalopods, (Wade, 1988), that comprises coiled and related nautiloids distributed in three orders (see below). Origin of the Nautilitoidea lies in the [[Ellesmerocerida|ellesmerocerid]] [[Bassleroceratidae]], sometimes included in the Tarphycerida instead.
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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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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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===<small> Included Orders </small>===
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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]].   
[[Oncocerida]]. Small to medium size nautiloids that split off from the early Tarphycerida, derived from the bassleroceratid [[Graciloceratidae]], which gave rise to the Nautilida.
[[Oncocerida]]. Small to medium size nautiloids that split off from the early Tarphycerida, derived from the bassleroceratid [[Graciloceratidae]], which gave rise to the Nautilida.

Latest revision as of 13:35, 15 July 2014

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