The use of plate fibulae continued in the 2nd century CE. Simple flat shapes were replaced with enamelled versions or more complex shapes. These included animal (zoomorphic) shapes (birds, horses, rabbits, flies, etc.), letters or words, abstract symmetrical or asymmetrical designs (including the so-called Celtic Trumpet designs), and skeuomorphic designs (symbolic designs). Most designs continued in use throughout the 2nd and 3rd centuries. In one later variation during this time, the Tutulus type, the circular disc plate was extended upwards to form a cone.