Found 1 items, similar to Implacentalia.
English → English (gcide) Definition: Implacentalia Implacentalia \Im`pla*cen*ta"li*a\, n. pl. [NL. See In- not, and Placental.] (Zo["o]l.) A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed. [1913 Webster]