The travertine fossil

[jimbogumbo]

Not a children's book: https://www.theatlantic.com/science/archive/2024/04/hominin-jawbone-fossil-floor-tile-travertine/678153/

[Parasaurolophus]

I've heard of shells and invertebrates in travertine, but I wouldn't have expected quite that. Makes for a hell of a conversation piece.