As I just quoted to @buffalo, Humani Generis does not comport with what you assert.
Humani Generis must be read in context of constant Church Teaching and understanding.
I confess … that all men from Adam onward who have been born and have died up to the end of the world will then rise again and stand “before the judgment-seat of Christ,” together with Adam himself and his wife,
who were not born of other parents, but were created: one from the earth
and the other from the side of the man Pope Pelagius I - 557AD
[We confess] … that after [Jesus’] spirit was already rendered up, his side suffered perforation by a lance, so that through the ensuing flow of water and blood, the one and only, immaculate, virgin holy Mother Church, the Spouse of Christ, might be formed,
just as from the side of the first man, cast into sleep, Eve was formed for him unto marriage. This happened so that the reality manifested in our last Adam, that is, Christ, might correspond to a certain prefiguring of that reality constituted by the first and ancient Adam, who, according to the Apostle, “is a type of the one who was to come” Ecumenical Council of Vienne in 1312
What is the true origin of marriage? That, Venerable Brethren, is a matter of common knowledge. For although the revilers of the Christian faith shrink from acknowledging the Church’s permanent doctrine on this matter, and persist in their long-standing efforts to erase the history of all nations and all ages, they have nonetheless been unable to extinguish, or even to weaken, the strength and light of the truth. We call to mind facts well-known to all and doubtful to no-one: after He formed man from the slime of the earth on the sixth day of creation, and breathed into his face the breath of life,
God willed to give him a female companion, whom He drew forth wondrously from the man’s side as he slept. In bringing this about, God, in his supreme Providence, willed that this spousal couple should be the natural origin of all men: in other words, that from this pair the human race should be propagated and preserved in every age by a succession of procreative acts which would never be interrupted. And so that this union of man and woman might correspond more aptly to the most wise counsels of God, it has manifested from that time onward, deeply impressed or engraved, as it were, within itself, two preeminent and most noble properties: unity and perpetuity Pope Leo XIII