Where does “Mammalia” come from?

Mammalia (Latin) comes from Latin mammalis, from Latin mamma, from Latin ferō, from Proto-Italic ferō, from Proto-Indo-European bʰéreti, from Proto-Indo-European bʰēr- — shiny, light brown.

Ancestry of “Mammalia”, step by step

StepLanguageWordMeaning
1LatinmammalisOf or for the breasts
2Latinmammaa breast; an udder; a pap; a teat, a dug
3Latinferōto bear; to carry
4Proto-Italicferōcarry, bear
5Proto-Indo-Europeanbʰéretito be carrying
6Proto-Indo-Europeanbʰēr-shiny, light brown

Words derived from “Mammalia”

Every word from Proto-Indo-European bʰēr- →Every word from Proto-Indo-European bʰéreti →Every word from Proto-Italic ferō →