👉 Zothamnids are a family of marine invertebrates that include clams, oysters, and other aquatic organisms. They have a segmented body with four segments: head, thorax, abdominal cavity, and shell. The zothamnids are known for their unique shell morphology, which is characterized by its complex interlocking patterns and the presence of microgills, which are tiny, finger-like structures that allow them to breathe underwater. This characteristic makes them highly adapted for living
