Phylogenic Hypotheses Chart (IMAGE)

Science China Press

Phylogenic Hypotheses Chart

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This image represents phylogenetic hypotheses of mammals. a-d, Four simplified phylogenetic hypotheses of mammals. The red dot indicates the node of Mammalia in each hypothesis. The dashed line and question mark between stem eutherians and placentals indicate the uncertainty about the divergence time of placental mammals. 1, Non-mammaliaform cynodonts (here primarily referred to tritylodonts). 2, Sinoconodon and/or morganucodontids (these two taxa are not a natural group; for simplicity of the figure they are merged). 3, Docodonta. 4, Australosphenidans. 5, Eutriconodontans. 6, 'Haramiyidans'. 7, Multituberculates. 8, 'Symmetrodontans'. 9, Metatherians (Marsupials). 10, Stem eutherians. 11, Placentals. 12, Gondwanatheria.

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