Social Infrastructure
Evidence of community healthcare, cooperative food systems, and communal tool-making across hominin history.
Community Healthcare
Dmanisi edentulous individual Probable
An elderly Homo georgicus individual (D3444) survived the loss of all teeth and complete reabsorption of tooth sockets, implying extended care by group members who provided soft food.
Evidence: Complete skull with fully reabsorbed tooth sockets; individual survived years without teeth
Atapuerca hypoxia / pathology cases Possible
Middle Pleistocene populations show care for impaired individuals in some analyses.
Evidence: Skeletal pathology cases in Sima population
Naledi wrist fracture Possible
Healed trauma suggests survival and possible assistance.
Evidence: DH1 postcranial pathology/healing
Shanidar 1 injury survival Confirmed
Shanidar 1 Neanderthal survived a crushing blow to the left eye (blinding that eye), a withered right arm (likely amputated), and a severe leg injury. Survival required extended care.
Evidence: Healed fractures and deformities on multiple body regions; individual lived to old age
La Chapelle-aux-Saints care Confirmed
The "Old Man" of La Chapelle-aux-Saints suffered severe osteoarthritis and tooth loss but survived to old age, implying group support.
Evidence: Severe degenerative disease; survived to estimated 40+ years (old for Neanderthals)
Food Sharing
Malapa hominin pair Possible
Two individuals preserved; possible kin/group context.
Evidence: MH1 + MH2
Oldowan transport of carcass parts Probable
Stone tools and bones indicate food transport to fixed points.
Evidence: Olduvai FLK sites
Cooperative hunting and food sharing Confirmed
Widespread evidence of cooperative big-game hunting and food sharing in H. sapiens populations from the Upper Paleolithic onward.
Evidence: Kill sites with organized processing areas; storage pits; ethnographic parallels
Cooperative Hunting
Acheulean large mammal procurement Probable
Butchery of large bovids
Evidence: Cut-marked megafauna at Acheulean sites
Acheulean megasite butchery Possible
Large carcass processing implying coordinated group effort.
Evidence: Multiple individuals at kill/butchery locales
Schoningen cooperative hunting Confirmed
Ten wooden throwing spears found with butchered horse remains, indicating organized group hunting of large game.
Evidence: Spears of varying sizes; designed for throwing; associated horse remains show organized butchery
Stegodon hunting Probable
Dwarf elephant hunting inferred at Liang Bua.
Evidence: Associated fauna and tools
Burial & Body Disposal
H. naledi deliberate body disposal Probable
Over 15 individuals deposited in extremely remote cave chambers, accessible only through narrow passages. The effort required suggests deliberate, repeated disposal of the dead by a small-brained species.
Evidence: 1500+ elements in remote chambers requiring dangerous navigation; no other explanation for accumulation
MSA burials Probable
Intentional burials in African MSA.
Evidence: Skhul/Qafzeh (comparative)
Neanderthal deliberate burials Confirmed
Multiple Neanderthal sites show evidence of deliberate burial including flexed body positions, grave goods, and possible flower offerings.
Evidence: Flexed positions in pit-like features; La Ferrassie, Shanidar, Kebara, Teshik-Tash
Communal Living
Dmanisi site re-use Confirmed
Multiple hominin individuals deposited at single site over time.
Evidence: Five crania + postcrania
Sima de los Huesos collective burial Probable
At least 28 individuals of various ages deposited in a deep shaft with a single handaxe, suggesting collective treatment of the dead and possible symbolic behavior.
Evidence: 28+ individuals in a single deep shaft; single handaxe ("Excalibur")
Teaching & Learning
Bladelet technology transmission Probable
Howiesons Poort and later MSA technologies imply skill transmission across generations.
Evidence: Standardized miniaturized tool forms