This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Trilobites main morphological groups.svg tagmata cephalon thorax pygidium Trilobites are so named for the three longitudinal lobes right pleural lobe axial lobe left pleural lobe the antennae and legs are not shown in these diagrams org Trilobitesectionsnumbered svg trilobites info htm Sam Gon III derivative by Obsidian