Of, belonging to, or designating the time and deposits of the second period of the Mesozoic Era, characterized by the existence of dinosaurs and the appearance of the earliest mammals and birds.

• 侏罗纪的，侏罗系的（属于或界定为）中生代时代第二期的时间和矿床的。该时期以恐龙的存在和最早的哺乳动物和鸟类的出现为特征