👉 The term "ilysiidae" refers to a group of extinct marine reptiles that lived during the Cretaceous period, around 65-78 million years ago. These creatures were known as the "Cretaceous-Paleogene Period reptiles", or Plesiosaurs. They are named after their distinctive appearance, which included long necks, long tails, and a distinctive, pointed snout. The species include: 1. Ilisius: This is one
