Longisquama lived during the Triassic Period 230 million years ago in what is now Asia. Longisquama was 6 inches (15 centimeters) long. It is known from a poorly preserved and incomplete fossil. It got its name from two unusual scales that grew on its back. These scales have puzzled scientists since the reptile was first discovered in 1969. Researchers have interpreted these structures in a variety of different ways. It is not known for certain what these scales were utilized for by the animal. Some researchers believe they were used to attract mates. Others believe the reptile was able to glide with them.