Pygocephalomorpha

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Pygocephalomorpha Temporal range: Carboniferous–Permian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Malacostraca
Superorder:	Peracarida
Order:	Pygocephalomorpha Beurlen, 1930
Families
Notocarididae Pygocephalidae Tealliocarididae Tylocarididae Pygaspis

The order Pygocephalomorpha is an extinct group of peracarid crustaceans. It contains five families, and one genus incertae sedis.^[1]

Pygocephalomorpha were abundant from the Carboniferous until their extinction in the Permian.^[2]

References

↑ J. Mees (2010). "Pygocephalomorpha". World Register of Marine Species. Retrieved October 1, 2010.
↑ Marjorie L. Reaka-Kudla (2002). "Habitat specialization and its relation to conservation policy in Crustacea". In Elva Escobar-Briones, Fernando Alvarez. Modern approaches to the study of Crustacea. Springer. pp. 211–221. ISBN 978-0-306-47366-1.

Syncarida	Anaspidacea Bathynellacea Palaeocaridacea

Peracarida	Spelaeogriphacea Thermosbaenacea Lophogastrida Mysida (opossum shrimp) Stygiomysida Mictacea Amphipoda Isopoda †Pygocephalomorpha Tanaidacea Cumacea (hooded shrimp)

Eucarida	Amphionidacea (Amphionides reynaudii) Euphausiacea (krill) Decapoda (shrimp, prawns, crayfish, lobsters, crabs, etc.)

The three most speciose orders are marked in bold; obelisks (†) mark extinct orders.

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