Tarphycerida

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(Taxonomy: revised and upgraded)
m (Taxonomy)
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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]]
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 Tarphycerina contains the Tarphyceratidae, Estonioceratidae, Trocholitidae, Ophidioceratidae, and Lituitidae. The Barrandeocerina contains two lineages beginning with the Barrandeoceratidae and Plectoceratidae, which might be considered at superfamilies.  
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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.  

Revision as of 22:45, 29 November 2013

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