A Throwback to the Age of Mammals

Once several years ago I had this dream, as is recorded in my Book of Dreams:

And this may have been the dream, too, where I was watching out the window, looking out on the deserted street, where P. had a manhole cover off, and crouched over he was bent double with his head down in the manhole. And then getting up he touched his head against the rim of the manhole, and instantly he came up, dancing and lurching in the street as if "Hit my head!", arms up and holding his head, capering bent back all childish and clowny, like some pure, simple child of the earth that he is.

And then in a dream Saturday night, I was going to go back and explore that labyrinth of rooms "in the back of my apartment," so seldom visited and now oft a site of terror, and then people were fleeing in terror, a girl sitting at a desk as if a nurse's desk told me that there were animals back there in those rooms.

And I went back, the hero into the maw of fear, and sure enough, one animal was as big as a hippopotamus, but different looking, with a knobbed head, uintatheric, as if a throwback to the Age of Mammals. And the other animal was even bigger, the size of a house, with a snout like a long, thin elephant's trunk, and the thing was, this animal would shove its trunk right up your ass and suck your internal organs out. And then this creature shoved its snout up the hippo-sized animal's ass, and was going to suck its organs out.