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Theriiformes: Difference between revisions

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Specified other relatives and classifications under theriiformes (ex. australophenida, triconodonts, spalacotheroids) as well as building on the existing information.
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'''[[Theriiformes]]''' is a clade of [[mammal]]s. The term was coined by Timothy B. Rowe in his doctoral [[dissertation]],<ref name="Rowe1988" /> and is defined as the clade formed by the most recent common ancestor of [[multituberculate]]s (which form part of the broader group [[Allotheria]]). The theriiformes include [[Spalacotheriidae|spalacotheroids]], some [[Triconodontidae|triconodonts]], [[Australosphenida|australophenida]] (regarded as a [[Polyphyly|polyphyletic]] assemblage of theriiformes, although are considered more basal to the crown [[Monotreme|monotremes)]], and relatives through to the crown [[theria]]ns.<ref>{{Cite book |url=http://dx.doi.org/10.1515/9783110341553 |title=Mammalian Evolution, Diversity and Systematics |date=2018-10-22 |publisher=De Gruyter |isbn=978-3-11-034155-3 |editor-last=Zachos |editor-first=Frank |editor-last2=Asher |editor-first2=Robert}}</ref> Mammals more closely related to therians than to multituberculates are included in the clade [[Trechnotheria]].<ref name="Macrini2007" /> Although some theriiform mammals are included under the monotreme classification, monotremes are not included in the theriiformes group.<ref>{{Cite journal |last=Meserve |first=Peter L |date=2017-08-01 |title=Ecological and Environmental Physiology of Mammals |url=http://dx.doi.org/10.1093/jmammal/gyx084 |journal=Journal of Mammalogy |doi=10.1093/jmammal/gyx084 |issn=0022-2372}}</ref> An evolutionary branching point between the theriiformes and monotremes seems to have occurred some 166 million years ago, based upon a genome analysis of a [[platypus]].<ref>{{Cite book |url=https://www.jstor.org/stable/j.ctt16gz4nn |title=Forerunners of Mammals: Radiation Histology Biology |date=2012 |publisher=Indiana University Press |isbn=978-0-253-35697-0}}</ref>
'''Theriiformes''' is a clade of [[mammal]]s. The term was coined by Timothy B. Rowe in his doctoral [[dissertation]],<ref name="Rowe1988" /> and is defined as the clade formed by the most recent common ancestor of [[multituberculate]]s (which form part of the broader group [[Allotheria]], along with [[Gondwanatheria]] and likely all/part of [[Haramiyida]]) and [[Theria]] (the group containing [[marsupial]]s and [[Placentalia|placentals]]).<ref>{{Cite book |url=http://dx.doi.org/10.1515/9783110341553 |title=Mammalian Evolution, Diversity and Systematics |date=2018-10-22 |publisher=De Gruyter |isbn=978-3-11-034155-3 |editor-last=Zachos |editor-first=Frank |editor-last2=Asher |editor-first2=Robert}}</ref> Mammals more closely related to therians than to multituberculates are included in the clade [[Trechnotheria]].<ref name="Macrini2007" /> As multituberculates are usually considered more closely related to therians than [[monotreme]]s are, it is considered to be a subgroup of the mammalian [[crown group]].<ref>{{Cite journal |last=Macrini |first=Thomas E. |last2=Rougier |first2=Guillermo W. |last3=Rowe |first3=Timothy |date=July 2007 |title=Description of a Cranial Endocast from the Fossil MammalVincelestes neuquenianus (Theriiformes) and its Relevance to the Evolution of Endocranial Characters in Therians |url=https://onlinelibrary.wiley.com/doi/10.1002/ar.20551 |journal=The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology |language=en |volume=290 |issue=7 |pages=875–892 |doi=10.1002/ar.20551}}</ref>


The cladogram below follows Luo ''et al.'' (2016):<ref name="Luo2016" />
The cladogram below follows Luo ''et al.'' (2016):<ref name="Luo2016" />
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[[Category:Theriiformes| ]]
[[Category:Theriiformes| ]]
[[Category:Taxa named by Timothy B. Rowe]]
[[Category:Taxa named by Timothy B. Rowe]]
[[Category:Theriimorpha]]



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{{mammal-stub}}

Latest revision as of 19:18, 21 September 2024

Theriiformes
Temporal range: Middle JurassicRecent
Skull of the multituberculate Ptilodus (Allotheria)
Skeleton of Maotherium (Trechnotheria)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: Theriimorpha
Clade: Theriiformes
Rowe, 1988
Subgroups

Theriiformes is a clade of mammals. The term was coined by Timothy B. Rowe in his doctoral dissertation,[1] and is defined as the clade formed by the most recent common ancestor of multituberculates (which form part of the broader group Allotheria, along with Gondwanatheria and likely all/part of Haramiyida) and Theria (the group containing marsupials and placentals).[2] Mammals more closely related to therians than to multituberculates are included in the clade Trechnotheria.[3] As multituberculates are usually considered more closely related to therians than monotremes are, it is considered to be a subgroup of the mammalian crown group.[4]

The cladogram below follows Luo et al. (2016):[5]

Mammalia

References

[edit]
  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.
  3. ^ Macrini, T. E.; Rougier, G. W.; Rowe, T. (2007). "Description of a Cranial Endocast from the Fossil Mammal Vincelestes 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.
  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.