Certain scientists

Ordovician sea with trilobites and other animals, ca. 450 million  years ago,  from  Paleoart. But then there's evidence on both sides of the table (on top of it and under it), and Certain Scientists say it's only about 4,000 years old, contemporary with the beginning of the Bronze Age in China, and the migration of Ethiopians to Kenya.

Generations Radio host Kevin Swanson interviewing the documentary filmmaker Kevin Peeples, from Right Wing Watch via Wonkette:

Swanson: I’m beginning to get some evidence from certain doctors and certain scientists that have done research on women’s wombs after they’ve gone through the surgery, and they’ve compared the wombs of women who were on the birth control pill to those who were not on the birth control pill. And they have found that with women who are on the birth control pill, there are these little tiny fetuses, these little babies, that are embedded into the womb. They’re just like dead babies. They’re on the inside of the womb. And these wombs of women who have been on the birth control pill effectively have become graveyards for lots and lots of little babies.

Peeples: We’ve actually heard on both sides of that. We’re researching that and want to make sure we speak correctly to that in our second film. But we have medical advice on both sides of the table there, so we want to make sure that we communicate that properly.

Swanson: It would seem, and I realize that people are a little split on what are all the effects of the birth control pill, but it would seem that there’s a tremendous risk in the use of it for the life of children.

Just wow. This man still has the creativity of a six-year-old. The mommy and the daddy do it, you see, and the violence of the action makes an egg hatch, up in the mommy's fallopian tubes. Out drifts a tiny sleeping creature, like a fairy, toward its bed in the womb—but no! There's this noxious birth control gas, it struggles to breathe, beats its tiny fists against the wall, and expires! And this happens again and again until this womb is a catacomb.

But we have medical advice on both sides of the table there, and other explorers say what we're talking about is just trilobites, ancient marine fossils, evoking babies, the way manatees made people imagine mermaids and rhinoceroses seemed to be unicorns. Who can say? The womb is so old, and vast!