FIG. S10. Undescribed Sidneyia-like arthropod from Sirius Passet: A, MGUH 31552, showing segmented longitudinal musculature in the thorax. B, drawing of MGUH 31552. Arrows mark segmental boundaries of
FIG. S10. Undescribed Sidneyia-like arthropod from Sirius Passet: A, MGUH 31552, showing segmented longitudinal musculature in the thorax. B, drawing of MGUH 31552. Arrows mark segmental boundaries of
