سنگ وزغ

Also known as bufonite, toad stone

thumb|Collection of a Toadstone, illustrated in Hortus Sanitatis, published in [[Mainz in 1491.]] thumb|Lower jaw fragment of Scheenstia, showing the teeth in situ The toadstone, also known as bufonite (from Latin , "toad") and crapaud-stone, is a mythical stone or gem that was thought to be found in the head of a toad. It was supposed to be an antidote to poison and in this it is like batrachite, supposedly formed in the heads of frogs. Toadstones were actually the button-like fossilised teeth of Scheenstia (previously Lepidotes), an extinct genus of ray-finned fish from the Jurassic and Cret