Theriiformes

Theriiformes; Temporal range:Middle Jurassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N
	Skull of themultituberculatePtilodus(Allotheria)
	Skeleton ofMaotherium(Trechnotheria)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Clade:	Theriimorpha
Clade:	Theriiformes; Rowe, 1988
Subgroups
	†Allotheria; †Tinodontidae; Trechnotheria;

Theriiformesis a clade ofmammals.The term was coined by Timothy B. Rowe in his doctoraldissertation,^[1]and is defined as the clade formed by the most recent common ancestor ofmultituberculates(which form part of the broader groupAllotheria,along withGondwanatheriaand likely all/part ofHaramiyida) andTheria(the group containingmarsupialsandplacentals).^[2]Mammals more closely related to therians than to multituberculates are included in the cladeTrechnotheria.^[3]As multituberculates are usually considered more closely related to therians thanmonotremesare, it is considered to be a subgroup of the mammaliancrown group.^[4]

The cladogram below follows Luoet al.(2016):^[5]

Mammalia

Theriiformes

	Gondwanatheria

	Multituberculata

Trechnotheria

Spalacotherioidea

Cladotheria

	Dryolestoidea

	Theria

References

^Rowe, T. (1988)."Definition, diagnosis, and origin of Mammalia".Journal of Vertebrate Paleontology.8(3): 241–264.doi:10.1080/02724634.1988.10011708.
^Zachos, Frank; Asher, Robert, eds. (2018-10-22).Mammalian Evolution, Diversity and Systematics.De Gruyter.ISBN 978-3-11-034155-3.
^Macrini, T. E.; Rougier, G. W.; Rowe, T. (2007). "Description of a Cranial Endocast from the Fossil MammalVincelestes neuquenianus(Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians ".The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology.290(7): 875–892.doi:10.1002/ar.20551.
^Macrini, Thomas E.; Rougier, Guillermo W.; Rowe, Timothy (July 2007)."Description of a Cranial Endocast from the Fossil MammalVincelestes neuquenianus (Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians".The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology.290(7): 875–892.doi:10.1002/ar.20551.
^Luo, Zhe-Xi; Schultz, Julia A.; Ekdale, Eric G. (2016)."Evolution of the Middle and Inner Ears of Mammaliaforms: The Approach to Mammals".In Clack, Jennifer A.; Fay, Richard R.; Popper, Arthur N. (eds.).Evolution of the Vertebrate Ear.Vol. 59. pp. 139–174.doi:10.1007/978-3-319-46661-3_6.

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[Rowe1988-1] Rowe, T. (1988)."Definition, diagnosis, and origin of Mammalia".Journal of Vertebrate Paleontology.8(3): 241–264.doi:10.1080/02724634.1988.10011708.

[2] Zachos, Frank; Asher, Robert, eds. (2018-10-22).Mammalian Evolution, Diversity and Systematics.De Gruyter.ISBN 978-3-11-034155-3.

[Macrini2007-3] Macrini, T. E.; Rougier, G. W.; Rowe, T. (2007). "Description of a Cranial Endocast from the Fossil MammalVincelestes neuquenianus(Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians ".The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology.290(7): 875–892.doi:10.1002/ar.20551.

[4] Macrini, Thomas E.; Rougier, Guillermo W.; Rowe, Timothy (July 2007)."Description of a Cranial Endocast from the Fossil MammalVincelestes neuquenianus (Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians".The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology.290(7): 875–892.doi:10.1002/ar.20551.

[Luo2016-5] Luo, Zhe-Xi; Schultz, Julia A.; Ekdale, Eric G. (2016)."Evolution of the Middle and Inner Ears of Mammaliaforms: The Approach to Mammals".In Clack, Jennifer A.; Fay, Richard R.; Popper, Arthur N. (eds.).Evolution of the Vertebrate Ear.Vol. 59. pp. 139–174.doi:10.1007/978-3-319-46661-3_6.

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