👉 The term "rhynchonellidae" refers to a family of extinct marine reptiles that lived during the Late Cretaceous period, around 65-70 million years ago. These animals were known for their large, elongated bodies and long necks, which allowed them to swim through the water quickly and efficiently. The family includes several genera, including the Rhynchonellidae, which is one of the most well-known members. The rhynchonellid