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Pygocephalomorpha

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Pygocephalomorpha
Temporal range: Carboniferous–Permian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Superorder: Peracarida
Order: Pygocephalomorpha
Beurlen, 1930
Families

The order Pygocephalomorpha is an extinct group of peracarid crustaceans. Pygocephalomorpha were abundant from the Carboniferous era until their extinction in the Permian era.[1]

This group constituted part of the freshwater and aquatic crustacean assemblages. The carapace is relatively axially shortened, with a prominent gastric region. Laterally, a cervical groove is visible, with carapace margins which is defined by an acute spine or process, including a somewhat well developed branchiostegites"[2]

Families

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The order contains extinct five families, and seven genera incertae sedis:[3][4]

See also

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References

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  1. ^ Marjorie L. Reaka-Kudla (2002). "Habitat specialization and its relation to conservation policy in Crustacea". In Elva Escobar-Briones, Fernando Alvarez (ed.). Modern approaches to the study of Crustacea. Springer. pp. 211–221. ISBN 978-0-306-47366-1.
  2. ^ Jones, Feldmann, Schweitzer, Reitano, Insacco, Wade , Rodney, Carrie , Agatino , Gianni (1 September 2015). "New Pygocephalomorph (Peracarida) from the Permian of the Sosio Valley (Sicily, Italy)". Journal of Crustacean Biology. 35 (5): 627–632. doi:10.1163/1937240X-00002367 – via Oxford Academic.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ WoRMS. "Pygocephalomorpha". World Register of Marine Species. Retrieved 26 December 2022.
  4. ^ WoRMS. "Pygocephalomorpha incertae sedis". World Register of Marine Species. Retrieved 26 December 2022.