Eutheria
noun plural
Eu·the·ria
yu̇-ˈthir-ē-ə 
: a major division of mammals characterized by the attachment of the developing fetus to the maternal uterus by a placenta and including all mammals living at the present time except the marsupials
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“Eutheria.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Eutheria. Accessed 26 Dec. 2024.
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