Most surviving pre-modern manuscripts use the codex format (as in a modern book), which had replaced the scroll by Late Antiquity. Parchment or vellum, as the best type of parchment is known, had also replaced papyrus, which was not nearly so long lived and has survived to the present only in the extremely dry conditions of Egypt, although it was widely used across the Roman world. Parchment is made of animal skin, normally calf, sheep, or goat, but also other animals. With all skins, the quality of the finished product is based on how much preparation and skill was put into turning the skin into parchment. Parchment made from calf or sheep was the most common in Northern Europe, while civilizations in Southern Europe preferred goatskin. Often, if the parchment is white or cream in color and veins from the animal can still be seen, it is calfskin. If it is yellow, greasy or in some cases shiny, then it was made from sheepskin.