Trilobites

Down

• 2. Appendages on thorax used for moving and feeding (8, 2, 10)
• 3. Segment adjoining the axis (4, 2, 3, 1, 7)
• 4. A line of weakness where the exoskeleton breaks first during ecdysis (4, 2, 1, 6, 6)
• 7. Part of the cephalon which is formed by the presence of the stomach, which is inside the head (4, 2, 3, 8)
• 8. Jointed legd and antennae (4, 3, 3, 10)
• 9. Where the trilobite shed its exoskeleton at various times in its life (4, 2, 7)
• 10. Hard exoskeleton, made of chitin (8)