Microtomographic reconstruction of Sanyuania sp., based on data of adult male (BA19005-8), volume rendering. A. Oblique ventral view into gaping carapace with flaps for improved valve overlap (arrows); B. Mouth area from ventral, with labrum (la), labium (lb), mandible (Md) and maxillula (Mxl); C. Cross section in posterior region, with very thick and robust valves; D. Anterior body region with A1 and A2 and presumed sac of spinneret gland (highlighted); E. Mandible (highlighted); F. Soft body with L5, L6 and L7 and HP; G. HP in dorsal view (highlighted). Scale bars 100 µm (A, C, D, F); 10 µm (B, E, G).