The head region of arthropods like trilobites and crustaceans, bearing the eyes, antennae, and mouthparts.
Direct from Greek kephalē (head). This zoological term is used specifically in arthropod anatomy to distinguish the head section from the thorax and abdomen.
Trilobites that lived 500 million years ago had a cephalon with sophisticated compound eyes—by studying their fossil heads, paleontologists can actually see what ancient creatures could see, revealing their behavior and environment.
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