Science Advances

Supplementary Materials

This PDF file includes:

  • fig. S1. Bluff section on the western edge of Alkali Flat adjacent to the study site.
  • fig. S2. Cross sections through tracks and geotenches.
  • fig. S3. Map of part of the study site.
  • fig. S4. Map of excavated tracks in part of the study site.
  • fig. S5. Orthorectified mosaic of part of the study site.
  • fig. S6. 3D point cloud models of excavated human tracks.
  • fig. S7. 3D point cloud models of excavated tracks.
  • fig. S8. 3D point cloud models of excavated tracks.
  • fig. S9. 3D point cloud models of excavated tracks.
  • fig. S10. Size and age estimations for excavated and unexcavated elongated tracks at and in the vicinity of the study site.
  • fig. S11. (A) Orthorectified mosaic of part of the study site showing two “flailing circles” as well as sloth and human composite tracks. (B) Interpretation of trackway trajectories are based on ghost and excavated tracks.
  • fig. S12. Tortuosity of sloth tracks in presence/absence of human tracks.
  • table S1. Radiocarbon and OSL dates from WHSA.
  • table S2. Measurements and interpretations of excavated tracks at WHSA.

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