|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was assigned to Theria by McKenna (1975), Prothero (1981) and Chow and Rich (1982); to Holotheria by Wang et al. (1998) and Martin (2002); to Mammalia by Ji et al. (2009); to Mammalia by Kielan-Jaworowska et al. (2004), Li and Luo (2006) and Gao et al. (2010); and to Theriiformes by Luo et al. (2011).
|Year||Name and author|
|1975||Trechnotheria McKenna p. 40|
|1981||Trechnotheria Prothero p. 321|
|1982||Trechnotheria Chow and Rich p. 129|
|1998||Trechnotheria Wang et al.|
|2002||Trechnotheria Martin p. 333|
|2004||Trechnotheria Kielan-Jaworowska et al. pp. 345, 366|
|2006||Trechnotheria Li and Luo p. 195|
|2009||Trechnotheria Ji et al. p. 281|
|2010||Trechnotheria Gao et al.|
|2011||Trechnotheria Luo et al. p. 444|
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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.