21. Lampreys and sharks only possess a cartilaginous endocranium, with both the upper and lower jaws being separate elements . 22. This is not two separate elements . 23. Race tracks are often broken down into separate elements such as standard corners, chicanes, double apexes, and straights. 24. A distributor-based system is not greatly different from a magneto system except that more separate elements are involved. 25. The building has three separate elements . 26. The freeway portions would be divided into two separate elements : truck lanes and lanes for passenger vehicles. 27. Jawless fish and sharks only poses a cartilaginous endocranium, with both the upper an lower jaws being separate elements . 28. He brought the previously separate elements of classical structural analysis together in a unified theory of beams and frames. 29. A simplified version of binaural recordings can be achieved using microphones with a separating element , like the Jecklin Disk. 30. It used four Yagi antennas mounted in the nose area; separate elements for transmit and receive were skewed for searching.