Ellesmerocerida

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==Taxonomic Position==
==Taxonomic Position==
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The Ellesmerocerida comprise an order of Nautiloid Cephalopods included in the superorder Plectronoceratoidea and are derived from the Plectronocerida in the Late Cambrian. The Ellesmerocerida are divided into two suborders, the Ellesmeroceratina and the Cyrtocerinina.  
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The Ellesmerocerida comprise an order of Nautiloid Cephalopods included in the superorder Plectronoceratoidea and are derived from the Plectronocerida in the Late Cambrian. The Ellesmerocerida are divided into two suborders, the Ellesmeroceratina and the [[Cyrtocerinina]].  

Revision as of 19:59, 20 January 2009

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