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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.
S. macroura species-group Kakadu dunnart, (Sminthopsis bindi) Carpentarian dunnart, (Sminthopsis butleri) Julia Creek dunnart, (Sminthopsis douglasi) Stripe-faced dunnart, (Sminthopsis macroura) Red-cheeked dunnart, (Sminthopsis virginiae) S. granulipes species-group White-tailed dunnart, (Sminthopsis granulipes) S. griseoventer species-group
The class Mammalia is divided into two subclasses based on reproductive techniques: monotremes, which lay eggs, and therians, mammals which give live birth, which has two infraclasses: marsupials/metatherians and placentals/eutherians.
The species Protungulatum donnae is sometimes placed as a stem-ungulate [20] known 1 meter above the Cretaceous-Paleogene boundary in the geological stratum that marks the Cretaceous–Paleogene extinction event [21] and Purgatorius, sometimes considered a stem-primate, appears no more than 300,000 years after the K-Pg boundary; [22] both ...
Boreoeutheria (/ b oʊ ˌ r iː oʊ j uː ˈ θ ɛr i ə /, "northern eutherians") is a magnorder of placental mammals that groups together superorders Euarchontoglires and Laurasiatheria.
Purgatorius is a genus of seven extinct eutherian species typically believed to be the earliest example of a primate or protoprimate, a primatomorph precursor to the Plesiadapiformes, dating to as old as 66 million years ago.
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 ...
Euarchonta and Glires together form the Euarchontoglires, one of the four eutherian clades. The current hypothesis, based on molecular clock evidence, suggests that the Euarchonta arose in the late Cretaceous period, about 88 million years ago, and diverged 86.2 million years ago into the groups of tree shrews and Primatomorpha.