Fig. B.1.
Three time snapshots showing the relative 3D space motions of the 14 cloud subregions, similar to Figs. 7–9, now also including the two young compact clusters NGC 1977 (light-orange) and σ Ori (dark-orange). The time snapshots are shown only for −6.8 Myr, Today, and +6.8 Myr. Top: front view in the 
/
plane. A movie version is available online. Middle: side view in the 
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plane. A movie version is available online. Bottom: top-down view in the 
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plane. A movie version is available online. See also Fig. 10 for an interactive version.
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