Yinotheria
Yinotheria is a proposed basal subclass clade of crown mammals that contains a few fossils of the Mesozoic and the extant monotremes. Today, there are only five surviving species, which live in Australia and New Guinea, but fossils have been found in England, China, Russia, Madagascar and Argentina. The surviving species consist of the platypus and four species of echidna. Contrary to other known crown mammals, they retained postdentary bones as shown by the presence of a postdentary trough. The extant members (monotremes) developed the mammalian middle ear independently.
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AkidolestesAustralosphenidaFel d 1List of mammals of IndonesiaList of mammals of Papua New GuineaList of monotremes and marsupialsList of prehistoric mammalsMammalMammaliaformesMarsupiontaProtheriaProtopheriansPrototherianShuotheriidaeShuotheriumTheriaTheriiformesYingabalanaraYinothereYinotheresYinotherianYinotherians
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Yinotheria
Yinotheria is a proposed basal subclass clade of crown mammals that contains a few fossils of the Mesozoic and the extant monotremes. Today, there are only five surviving species, which live in Australia and New Guinea, but fossils have been found in England, China, Russia, Madagascar and Argentina. The surviving species consist of the platypus and four species of echidna. Contrary to other known crown mammals, they retained postdentary bones as shown by the presence of a postdentary trough. The extant members (monotremes) developed the mammalian middle ear independently.
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Yinotheria is a proposed basal ...... lian middle ear independently.
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40,479,907
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1,020,502,883
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Chow and Rich, 1982
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Ambondro mahabo jawbone
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image caption
Ornithorhynchus anatinus
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name
Yinotheria
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subdivision
*†Shuotheriidae
*Australosphenida
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Subgroups
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taxon
Yinotheria
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subject
hypernym
comment
Yinotheria is a proposed basal ...... lian middle ear independently.
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label
Yinotheria
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