Figure 7

Later stages of metanephridial system development in Lepidochitona corrugata (surface renderings). A–D. Total specimens, scale bar for all between C and D. A. spm 8. B. spm 10. C. spm 12. D. spm 14. E–G. Metanephridial systems enlarged with transparent pericardial wall and heart. E. spm 8. F. spm 12. G. spm 14. da, dorsal aorta; h, heart; k, kidney; le, left eye; led, left efferent nephroduct; lpn, left protonephridium; pe, pericardium; re, right eye; red, right efferent nephroduct; rp, renopericardial duct; rpn, right protonephridium.