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Theria (/ ˈ θ ɪər i ə / or / ˈ θ ɛr i ə /; from Ancient Greek θηρίον (thēríon) 'wild beast') is a subclass of mammals [2] amongst the Theriiformes.Theria includes the eutherians (including the placental mammals) and the metatherians (including the marsupials) but excludes the egg-laying monotremes and various extinct mammals evolving prior to the common ancestor of placentals ...
Synapsida [a] is a diverse group of tetrapod vertebrates that includes all mammals and their extinct relatives. It is one of the two major clades of the group Amniota, the other being the more diverse group Sauropsida (which includes all extant reptiles and birds).
Therian may refer to: In taxonomy, a member of the mammalian subclass Theria , consisting of marsupial and placental mammals Therianthropy (disambiguation) , the mythological ability or affliction of individuals to metamorphose into animals or hybrids by means of shapeshifting
Eutheria (from Greek εὐ-, eú-'good, right' and θηρίον, thēríon 'beast'; lit. ' true beasts '), also called Pan-Placentalia, is the clade consisting of placentals and all therian mammals that are more closely related to placentals than to marsupials.
A later node-based definition for Trechnotheria was the clade comprising the last common ancestor of Zhangheotherium and living therian mammals, and all its descendants. [3] Alternatively it can be defined as the group with true symmetrodontia, being defined as an apomorphy rather than being defined as a node, the redefinition includes the ...
A subclass of mammals [1] amongst the Theriiformes (the sister taxon to Yinotheria.)Theria includes the eutherians (including the placental mammals) and the metatherians (including the marsupials.)
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There is a black blotch on the spiny part of the dorsal fin between the third and sixth spines and the tail is striped with a black tip to each lobe. This species sexual maturity after attaining a total length of 13 centimetres (5.1 in), they are most commonly recorded at total lengths of around 25 centimetres (9.8 in) and the longest recorded ...