👉 Craterolophids, also known as cratersolids or crateridoids, are a group of extinct phylum of small to medium-sized marine animals that lived in the Late Cretaceous period (239-206 million years ago). These creatures were characterized by their large, rounded bodies and flattened heads, which allowed them to swim efficiently. Craterolophids had several distinct groups within the group, including the Bivalvia, Chondrichthyes
