Abstract：
:Bipedalism is a defining feature of the human lineage. Despite evidence that walking on two feet dates back 6-7 Ma, reconstructing hominin gait evolution is complicated by a sparse fossil record and challenges in inferring biomechanical patterns from isolated and fragmentary bones. Similarly, patterns of social behavior that distinguish modern humans from other living primates likely played significant roles in our evolution, but it is exceedingly difficult to understand the social behaviors of fossil hominins directly from fossil data. Footprints preserve direct records of gait biomechanics and behavior but they have been rare in the early human fossil record. Here we present analyses of an unprecedented discovery of 1.5-million-year-old footprint assemblages, produced by 20+ Homo erectus individuals. These footprints provide the oldest direct evidence for modern human-like weight transfer and confirm the presence of an energy-saving longitudinally arched foot in H. erectus. Further, print size analyses suggest that these H. erectus individuals lived and moved in cooperative multi-male groups, offering direct evidence consistent with human-like social behaviors in H. erectus.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hatala KG,Roach NT,Ostrofsky KR,Wunderlich RE,Dingwall HL,Villmoare BA,Green DJ,Harris JW,Braun DR,Richmond BGdoi
10.1038/srep28766subject
Has Abstractpub_date
2016-07-12 00:00:00pages
28766issn
2045-2322pii
srep28766journal_volume
6pub_type
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