Ptychopariina
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  | |
| 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.[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]
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.
- ^ a b c III, Samuel M. Gon. "Pictorial Guide to the Trilobite Order Ptychopariida". trilobites.info. Retrieved 26 October 2020.
External links
- Ptychopariida fact sheet (trilobites.info)
- Ptychopariina
- Ptychopariina
- v
- t
- e
