rudapithecus: fossil hominoids from northern central Hungary; late Miocene
placental: mammals having a placenta; all mammals except monotremes and marsupials
blastula: early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs