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Ptychopariina

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Suborder of trilobites (fossil)

Ptychopariina
Temporal range: Lower Cambrian–Middle Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Conocoryphe sulzeri
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita
Order: †Ptychopariida
Suborder: †Ptychopariina
Swinnerton, 1915
Superfamilies

Ptychopariina is an extinct suborder of trilobites of the order Ptychopariida. Also known as the primitive Ptychopariida, they are a notably wide and varied taxon. Some of the representative genera include Elrathia, Densonella, Norwoodia, Tricrepicephalus, Conocoryphe, and Modocia.

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.

References

  1. Swinnerton HH, 1915. Suggestions for a Revised Classification of trilobites. Geological Magazine.
  2. ^ III, Samuel M. Gon. "Pictorial Guide to the Trilobite Order Ptychopariida". trilobites.info. Retrieved 26 October 2020.

External links

Taxon identifiers
Ptychopariina


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