Roach, N. T., K. G. Hatala, K. R. Ostrofsky, B. Villmoare, J. S. Reeves,
Andrew Du, D. R. Braun, J. W. K. Harris, A. K. Behrensmeyer, and
B. G. Richmond, 2016, Pleistocene footprints show intensive use
of lake margin habitats by Homo erectus groups. Scientific Reports 6,
Article number: 26374 (2016) doi:10.1038/srep26374
http://www.nature.com/articles/srep26374
https://www.researchgate.net/publication/303372868_Pleistocene_footprints_show_intensive_use_of_lake_margin_habitats_by_Homo_erectus_groups
https://repository.si.edu/handle/10088/28928
http://nrs.harvard.edu/urn-3:HUL.InstRepos:27662266
"Supplementary Material for Pleistocene footprints show
intensive use of lake margin habitats by Homo erectus groups" at
http://pubman.mpdl.mpg.de/pubman/item/escidoc:2305755/component/escidoc:2305754/Roach_Pleistocene_SciRep_2016_Suppl.pdf
Yours,
Paul H.