👉 The term "cephalacanthus" refers to a type of fossil fish that lived in the Late Cretaceous period (approximately 68-54 million years ago) on the continental shelf off the coast of Australia. These fish had a body shape resembling that of a human, with elongated arms and legs that were adapted for swimming underwater. They were known for their large brain size and were believed to have been highly intelligent creatures with complex social structures. Cephalacanth