Zatheria

Zatheria Temporal range: Middle Jurassic - Holocene, 165–0 Ma PreЄ Є O S D C P T J K Pg N
Kangaroo with her joey
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Class:	Mammalia
Clade:	Cladotheria
Clade:	Zatheria McKenna, 1975
Subgroups
†Arguitheriidae †Arguitherium †Arguimuridae †Arguimus †Vincelestidae †Vincelestes †Peramura †Peramuridae Tribosphenida

Zatheria is a group (sublegion) of mammals that includes the common ancestor of Arguitheriidae, Arguimuridae, Vincelestidae, Peramuridae and Tribosphenida (living therians plus all of its ancestors).

Phylogeny

Below is a cladogram from Rowe (1988) and McKenna and Bell (1997) showing one hypothesis of mammal relationships:^[1][2]

Mammaliaformes	†Morganucodontidae Mammalia  Prototheria→Monotremata Theriiformes †Allotheria→†Multituberculata Holotheria †Kuehneotheria Trechnotheria †Zhangheotherium †("Symmetrodonta")  Cladotheria  †Dryolestoidea  Zatheria  †Peramura Tribosphenida †Aegialodontia  Theria  Metatheria→Marsupialia Eutheria→Placentalia

Further reading

• McKenna, Bell: Classification of Mammal: Above the Species Level

References

1. Rowe, Timothy (1988). "Definition, diagnosis, and origin of Mammalia". Journal of Vertebrate Paleontology. 8 (3): 241–264. doi:10.1080/02724634.1988.10011708. ISSN 0272-4634.
2. McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. Columbia University Press. pp. 9–10. ISBN 978-0-231-11012-9. Retrieved 16 March 2015.

External links

• MESOZOIC MAMMALS; Stem zatherians, zatherians & Peramuridae, an internet directory
• Sublegion Zatheria - Hierarchy - The Taxonomicon