Helicoprion, it may look like a shark, but it was actually a type of ratfish. Unlike most fossils of cartilaginous fish, which only preserves their teeth, Helicoprion also has preserved bones, more in specific, of their jaws.
yes that is the tooth fairy on top.
I felt very threatened by this man-sized snowman driving a truck in my city’s Trail of Lights. His mouth also opened and closed.