Tarphycerida

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(Evolution: technical)
(Taxonomy: rewrite)
 
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==Taxonomy==
==Taxonomy==
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The Tarphycerida revised contains 11 families, five in the suborder [[Tarphycerina]] and six in the doubtful suborder [[Barrandeocerina]], 12 if the Bickmoritidae are separated from the Barranceratidae.  The [[Lituitidae]] are returned to the Tarphycerida.  
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The Tarphycerida revised contains 11 families, five in the suborder [[Tarphycerina]] and six in the [[Barrandeocerina]], 12 if the Bickmoritidae are separated from the Barranceratidae.  
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The Barrandeocerina is of doubtful validity because it appears to be polyphyletic, with at least two phylogenetic lineages derived at different times from different [[Tarphyceratidae]]
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The Barrandeocerina is of doubtful validity as it may be polyphyletic, with at least two phylogenetic lineages derived at different times from different tarphyceratids.
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The Tarphycerina contains the Tarphyceratidae, Estonioceratidae, Trocholitidae, Ophidioceratidae, and Lituitidae. The Barrandeocerina contains two lineages beginning with the Barrandeoceratidae and Plectoceratidae, which might be considered as superfamilies.  
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The Tarphycerina includes the [[Tarphyceratidae]], [[Estonioceratidae]], [[Trocholitidae]], [[Ophidioceratidae]], and [[Lituitidae]]. The Barrandeocerina contains two lineages, which might be considered as superfamilies, beginning with the [[Barrandeoceratidae]] and [[Plectoceratidae]].  
'''Credits'''
'''Credits'''
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[[User: John M|JHM]] 8/16/09; 11/29/13
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[[User:John M|John]] 8/16/09; 11/29/13; 7/25/14

Latest revision as of 01:53, 26 July 2014

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