It may be difficult--after all, I don't know how much pre-existing knowledge there is on the subject of evolutionary biology.

[Egon rests his head between the crook of Ray's neck and shoulder. Which is difficult, given how tall Egon is, but he manages.]

Have you considered that the death rituals of this world may not be the same than that of our dimension? Several cultures have other ways in which they respect the dead--there's no telling how differently they regard the dead in this universe. It may seen odd to us, but we are also technically outsiders to this dimension and may have difficulty contextualizing certain things.