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Trechnotheria

Osteichthyes

Taxonomy
Trechnotheria was named by McKenna (1975) [Superlegion]. It is extant. It was considered monophyletic by Wang et al. (1998).

It was assigned to Theria by McKenna (1975), Prothero (1981), Chow and Rich (1982); to Holotheria by Wang et al. (1998), Martin (2002); to Mammalia by Ji et al. (2009); to Theriiformes by Luo et al. (2011); and to Mammalia by Kielan-Jaworowska et al. (2004), Li and Luo (2006), Gao et al. (2010), Zhang et al. (2024).

Subtaxa
Spalacotherioidea, Yangotheria, Zhangheotheria
Sister taxa
Spalacotherioidea, Yangotheria, Zhangheotheria

Synonymy list
YearName and author
1975Trechnotheria McKenna p. 40
1981Trechnotheria Prothero p. 321
1982Trechnotheria Chow and Rich p. 129
1998Trechnotheria Wang et al.
2002Trechnotheria Martin p. 333
2004Trechnotheria Kielan-Jaworowska et al. pp. 345, 366
2006Trechnotheria Li and Luo p. 195
2009Trechnotheria Ji et al. p. 281
2010Trechnotheria Gao et al.
2011Trechnotheria Luo et al. p. 444
2024Trechnotheria Zhang et al. p. 316

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Trechnotheria

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. Trechnotheria McKenna 1975
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Unr. †Spalacotherioidea Prothero 1981
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Fm. †Spalacotheriidae Marsh 1887
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G. †Akidolestes Li and Luo 2006
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†Akidolestes cifelli Li and Luo 2006
†Akidolestes cifelli Li and Luo 2006
G. †Cifellitherium Martin et al. 2022
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†Cifellitherium suderlandicum Martin et al. 2022
G. †Infernolestes Cifelli et al. 2014
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†Infernolestes rougieri Cifelli et al. 2014
G. †Peralestes Owen 1871
Subfm. †Spalacolestinae Cifelli and Madsen 1999
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G. †Aliaga Cuenca-Bescos et al. 2014
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†Aliaga molinensis Cuenca-Bescos et al. 2014
G. †Heishanlestes Hu et al. 2005
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†Heishanlestes changi Hu et al. 2005
G. †Lactodens Han and Meng 2016
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†Lactodens sheni Han and Meng 2016
G. †Shalbaatar Nessov 1997
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†Shalbaatar bakht Nessov 1997
G. †Spalacolestes Cifelli and Madsen 1999
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†Spalacolestes cretulablatta Cifelli and Madsen 1999
†Spalacolestes inconcinnus Cifelli and Madsen 1999
G. †Spalacotheridium Cifelli 1990
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†Spalacotheridium mckennai Cifelli 1990
†Spalacotheridium noblei Cifelli and Madsen 1999
G. †Spalacotheroides Patterson 1955
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†Spalacotheroides bridwelli Patterson 1955
G. †Symmetrodontoides Fox 1976
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Invalid names: Mictodon simpsoni Fox 1984 [synonym]
†Symmetrodontoides foxi Cifelli and Madsen 1986
Invalid names: Mictodon Fox 1984 [synonym]
G. †Yaverlestes Sweetman 2008
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†Yaverlestes gassoni Sweetman 2008
G. †Spalacotherium Owen 1854
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†Spalacotherium evansae Ensom and Sigogneau-Russell 2000
†Spalacotherium henkeli Krebs 1985
†Spalacotherium taylori Clemens and Lees 1971
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Invalid names: Peralestes longirostris Owen 1871 [synonym]
G. †Symmetrolestes Tsubamoto and Rougier 2004
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†Symmetrolestes parvus Tsubamoto and Rougier 2004
Fm. †Zhangheotheriidae Rougier et al. 2003
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G. †Anebodon Bi et al. 2016
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†Anebodon luoi Bi et al. 2016
G. †Kiyatherium Maschenko and Lopatin 2002
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†Kiyatherium cardiodens Maschenko and Lopatin 2002
G. †Maotherium Rougier et al. 2003
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†Maotherium asiaticus Ji et al. 2009
†Maotherium sinensis Rougier et al. 2003
G. †Ningchengodon Zhang et al. 2024
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†Ningchengodon foxi Zhang et al. 2024
G. †Origolestes Mao et al. 2020
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†Origolestes lii Mao et al. 2020
G. †Zhangheotherium Hu et al. 1997
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Invalid names: Yangotheria Chow and Rich 1982 [empty], Zhangheotheria Averianov et al. 2013 [empty]
Diagnosis
No diagnoses are available