eutherian

American  

[yoo-theer-ee-uhn] / yuˈθɪər i ən /

adjective

1. belonging or pertaining to the group Eutheria, comprising the placental mammals.

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noun

1. a eutherian animal.

eutherian British  

/ juːˈθɪərɪən /

adjective

1. of, relating to, or belonging to the Eutheria, a subclass of mammals all of which have a placenta and reach an advanced state of development before birth. The group includes all mammals except monotremes and marsupials

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noun

1. any eutherian mammal

Etymology

Origin of eutherian

1875–80; < New Latin Eutheri ( a ) (< Greek eu- eu- + thēría, plural of thēríon wild beast) + -an

Example Sentences

Around 100,000 years postasteroid a new eutherian appeared in Montana and swiftly became common.

From Scientific American • May 17, 2022

It, or perhaps another closely related eutherian, was our ancestor.

From Scientific American • May 17, 2022

By focusing our comparison on only eutherian mammals, we discover functional elements relevant to this clade, including recent eutherian innovations.

From Nature • Oct. 26, 2011

Figure 1: Phylogeny and constrained elements from the 29 eutherian mammalian genome sequences. a, A phylogenetic tree of all 29 mammals used in this analysis based on the substitution rates in the MultiZ alignments.

From Nature • Oct. 26, 2011

As the earliest eutherian known to date, the creature represents what some of our own precursors were like during the Jurassic.

From Science Magazine • Aug. 24, 2011