Circular Fossil Showing a Spiral Shell
Puzzle 2 of Happy Hour Piece of Cake Pack
Question is: Circular Fossil Showing a Spiral Shell
and the answer is: AMMONITE
Word Meaning:
AMMONITE — (paleontology) Any of an extinct group of cephalopods of the subclass Ammonoidea; a fossil shell of such an animal.
Definitions from Wiktionary.