There were other bow fibula variations of the 2nd and 3rd centuries AD. The Divided Bow type has an arched bow and a long foot. The arch was made up of two, or even three, separate, but parallel, arches. These arches are either wide and flat or narrow and tall. The Trident fibula has a rounded arch and long foot and a wide, flat head plate with three points. The entire fibula looks like a trident. Claims that this was the standard fibula of the Roman navy are unfounded.