Ptychopariina

 ( Cambrian Trilobites ) 

Ptychopariina is an extinct suborder of of the order Ptychopariida.Swinnerton HH, 1915. Suggestions for a Revised Classification of trilobites. Geological Magazine. Also known as the primitive Ptychopariida, they are a notably wide and varied taxon. Some of the representative Genus include Elrathia, Densonella, Norwoodia, Tricrepicephalus, Conocoryphe, and Modocia.

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Description Specialization is common in the Ptychopariina, which has made it difficult for authors to develop a single phenotype that can distinguish Ptychopariina from other . The thorax tends to be relatively long, with the pygidium generally smaller in size than the thorax.

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External links

• Ptychopariida fact sheet (trilobites.info)
• Ptychopariina
• Ptychopariina

Categories: Cambrian Trilobites, Ptychopariida, Arthropod Suborders

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