👉 The term "epipterygoid" refers to a type of bone in vertebrates, specifically fish and some amphibians. These bones are found on the sides of the tailbone, which is also known as the tailbone, and are associated with the development of the tail. The epipterygiids are a group of fish that have epiphyseal plates in their tails, which allows them to grow rapidly during their lives. The epipterygoid is
