Ptychopariina
Ptychopariina is an extinct suborder of trilobites of the order Ptychopariida.[1] Also known as the primitive Ptychopariida, they are a notably wide and varied taxon.[2] Some of the representative genera include Elrathia, Densonella, Norwoodia, Tricrepicephalus, Conocoryphe, and Modocia.[2]
Ptychopariina Temporal range: | |
---|---|
Conocoryphe sulzeri | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | †Trilobita |
Order: | †Ptychopariida |
Suborder: | †Ptychopariina Swinnerton, 1915 |
Suborders | |
Description
Specialization is common in the Ptychopariina, which has made it difficult for authors to develop a single type that can distinguish Ptychopariina from other clades. The thorax tends to be relatively long, with the pygidium generally smaller in size than the thorax.[2]
References
- Swinnerton HH, 1915. Suggestions for a Revised Classification of trilobites. Geological Magazine.
- III, Samuel M. Gon. "Pictorial Guide to the Trilobite Order Ptychopariida". trilobites.info. Retrieved 26 October 2020.
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