Trilobite Body Plan

As viewed dorsally from above the exoskeleton (without legs or antenna). In the axial direction, the trilobite body has three major axial components, or tagmata, the Cephalon (1), Thorax (2) and Pygidium (3). However, trilobites are actually named for the three lobes in the longitudinal direction (4-6).

 

 

Trilobites Boddy Plan