Another Name for Toadstone
Puzzle 6 of At the Ballet Hard Pack
Question is: Another Name for Toadstone
and the answer is: BUFONITE
Word Meaning:
BUFONITE — (paleontology, obsolete) A fossil consisting of the petrified teeth and palatal bones of fishes belonging to the family of pycnodonts, whose remains occur in the oolite and chalk formations.
Definitions from Wiktionary.