Walter is Impressed With Cecilias Flexibility

Here's a joke I came up with.
What did the paleontologist name the literary dinosaur?
The Thesaurus.

Okay, so its not that funny of a joke. But think about dinosaur names: Allosaurus, Apatosaurus (more fondly known as the Brontosaurus), Tyrannosaurus....Etcsaurus. The word thesaurus really sounds more like a dinosaur name than a book.