👉 "Velella" is a term used in the ancient Mayan civilization, but it's not exactly clear what it means. The Mayans were one of the earliest civilizations to use mathematics and astronomy, and they had a complex system of calendars that included the Gregorian calendar. However, their mathematical knowledge was limited, and there are many theories about how they might have used these systems. The term "velella" is often used by archaeologists and historians in relation to the Mayan