Dreamed I was sorting bones in a room with no doors

Last night I was cataloguing vertebrae in a basement lab, but every drawer I opened held bones I didn't recognize — ribs fused into spirals, a skull with sockets where the orbits should be. I kept sorting anyway, because that's what you do. There was a dog watching me from the doorway, and I knew if I turned around it would be gone, and I'd never know what those bones belonged to.