Don’t ask me, I think they used butyl? (Toby, I don't get what you're aiming at, but in Greek mythology the Dactyls were a strange race of creatures associated with the goddess Cybele and they were believed to live on Mount Ida and invented the art of working metals into usable shapes with fire)

(And as this site seems to be a good place for education, here’s a little something to enlighten your tarot knowledge? http://www.bureau-13.com/crowleys_deck.html)

It's a pun. The phrase is a dactyl; I was aiming at dinosaurs.
And there are things that rhyme with it.

There once was a Tarotic Dino; Who courted a horny young Rhino; The made love for a week; And they danced cheek to cheek; After while came a Wine-Dine Bambino

---