👉 A palaeornithological term is a scientific term used to describe a type of dinosaur or other extinct animal that lived during the time when dinosaurs were most active, around 65 million years ago. This type of dinosaur was known as the "palaeontosaur," and it had wings that could be folded back on themselves like those of a bird. Palaeornithological terms are used in paleontology to describe the evolutionary history and distribution of these types of dinosaurs. They can also