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Trilobites were marine arthropods characterized by their distinct three-part body structure, consisting of a cephalon (head), thorax (body), and pygidium (tail). They typically had a hard exoskeleton, which was often segmented, and displayed a range of sizes from a few millimeters to over a foot in length. Many trilobites featured compound eyes, and their bodies could exhibit various patterns, spines, and pleural lobes, contributing to their diversity and adaptability in different marine environments.

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1mo ago

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