Overview
A broadly defined Middle Pleistocene species based on the Mauer mandible from Germany. Has become a "catch-all" taxon for Middle Pleistocene hominins between H. erectus and the Neanderthal/sapiens split. European specimens (Sima de los Huesos, Mauer, Petralona) may be early Neanderthals, while African specimens (Bodo, Kabwe) may be H. bodoensis. The Sima de los Huesos population from Atapuerca (~430 KYA) provides exceptional evidence of group behavior including possible deliberate body disposal.
Key Fossils
Mauer 1 (mandible), Petralona cranium, Bodo cranium, Sima de los Huesos assemblage
Brain Anatomy
Endocast-Based Estimates
| Region | Functional Implications | vs. Modern Human |
|---|---|---|
| Frontal | Large frontal lobes; cooperative hunting, possible hafted tools, social planning | Near-modern frontal development |
| Parietal | Expanded parietal cortex; complex tool-making including wooden spears | Approaching modern proportions |
| Temporal | Moderate temporal development; improved social cognition and communication | Below modern but increasing |
| Occipital | Reduced occipital; frontal-parietal oriented brain | Near modern proportions |
| Cerebellar | Expanding cerebellum; motor coordination for complex activities | Approaching modern size |
Tools & Technology
Associated Tool Traditions
Acheulean
Characterized by large bifacial tools, especially handaxes and cleavers. Represents a major advance in planning and symmetry. Lasted over 1.5 million years — the longest-lasting tool tradition.
Mousterian
Middle Paleolithic prepared-core technology primarily associated with Neanderthals. Levallois technique produces predetermined flake shapes. Includes points, scrapers, and notched tools.
Specific Tool Types
| Tool | Material | Function | Tradition |
|---|---|---|---|
| Handaxe | stone | Multi-purpose: butchering, digging, woodworking | Acheulean |
| Wooden spear | wood | Hunting large game | – |
Diet & Food Sources
Omnivorous; big-game hunting; Schoningen spears demonstrate hunting technology
| Food Source | Type | Evidence | Confidence |
|---|---|---|---|
| Large game meat | Meat hunted | Cut marks | Strong |
Fire Use
Heated flint/bone fragments in Middle Pleistocene deposits.
Possible hearths associated with wooden spears
Shelters & Habitation
Terra Amata huts
Claimed seasonal shelters built by H. heidelbergensis on a beach near present-day Nice. Oval post-holes suggest structures up to 15m long. Interpretation heavily debated.
Evidence: Possible post-holes, shaped floors, central hearths
Social Behavior
Atapuerca hypoxia / pathology cases Possible
Middle Pleistocene populations show care for impaired individuals in some analyses.
Evidence: Skeletal pathology cases in Sima population
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
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")
Art & Symbolic Behavior
Sima de los Huesos mortuary behavior Probable
Deep-pit accumulation of hominin remains; possible deliberate body disposal (debated).
Genetics & Ancient DNA
| Genome Coverage | 0.10% |
|---|---|
| DNA Source | Sima de los Huesos (Spain) |
| Sequencing Year | 2016 |
| mtDNA Available | Yes |
| Nuclear DNA | Yes |
| Divergence Date (fossil calibrated) | 600 KYA |
| Key Genes/Variants | mtDNA shows Denisovan affinities; nuclear DNA shows Neanderthal affinities |
Ancient DNA from ~430 KYA Sima de los Huesos. Oldest nuclear DNA from a hominin. mtDNA closer to Denisovans; nuclear DNA closer to Neanderthals.
Molecular clock data from TimeTree 5 (Kumar et al. 2022).
Phylogenetic Relationships
| Related Species | Relationship | Confidence | Notes |
|---|---|---|---|
| Homo neanderthalensis | Proposed ancestor | Strong | European H. heidelbergensis populations gave rise to Neanderthals |
| Homo sapiens | Proposed ancestor | Moderate | African H. heidelbergensis (or H. bodoensis) is the likely ancestor of H. sapiens |
| Homo sapiens idaltu | Proposed descendant | Moderate | Likely descended from African H. heidelbergensis / archaic Homo population |
| Homo cepranensis | Synonym | Moderate | Many researchers assign Ceprano to H. heidelbergensis |
| Homo helmei | Proposed descendant | Moderate | Likely descended from African H. heidelbergensis |
Archaeological Evidence
Accumulation of 28+ individuals deep in a cave shaft, along with a single handaxe — possibly the earliest evidence of deliberate body disposal.
Possible post-holes and shaped floors suggesting seasonal hut construction by H. heidelbergensis (interpretation debated).
Ten wooden throwing spears found with butchered horse bones. The spears are expertly crafted, weighted for throwing.
Key Specimens
| Specimen | Name | Site | Year | Age (MYA) | Completeness | Significance |
|---|---|---|---|---|---|---|
| Cranium 5 | Miguelon / Sima de los Huesos | Atapuerca | 1992 | 0.43 | 80.00% | Largest Sima cranium |
| Kabwe 1 | Broken Hill / Rhodesian Man | — | 1921 | 0.30 | 70.00% | Classic archaic Homo cranium |
Life History
| Estimated Lifespan | ~38 years |
|---|---|
| Age at Maturity | ~14.0 years |
| Weaning Age | ~3.0 years |
| Interbirth Interval | ~3.8 years |
| Gestation | ~9.0 months |
| Dental Development | Sima/Middle Pleistocene: dental schedules between erectus and Neanderthals |
| Brain Growth | Large brain; prolonged growth vs H. erectus |
| Growth Comparison | Slower than H. erectus; faster than H. sapiens (debated) |
| Confidence | Estimated from fossils |
Pathology & Healthcare Evidence
Congenital anomaly — Cranium 5
Affected: Sima de los Huesos
Developmental anomalies documented in some Atapuerca individuals (population study context).
Survival: Lifelong
DNA Data
Mitochondrial / Genomic Sequences
| Accession | Type | Length (bp) | Organism |
|---|---|---|---|
| KT780370 | Complete mitogenome | 16,573 | Homo sp. Sima de los Huesos |
Ancient DNA Samples
| Sample | Site | Date (BP) | Coverage | Haplogroup |
|---|---|---|---|---|
| SH_mtDNA | Sima de los Huesos | 430,000 | 0.00x | — |
Isotope Analyses
| System | Value | Material | Site | Date (MYA) | Interpretation |
|---|---|---|---|---|---|
| delta C13 | -11.00 | Bone collagen | Atapuerca | 0.430 | Sima de los Huesos: Middle Pleistocene western European ecosystem. |
Dating Evidence
| Method | Date (MYA) | Uncertainty | Material | Site / Specimen |
|---|---|---|---|---|
| Ar Ar | 1.2000 | ± 0.0500 | Atapuerca section tephras | Atapuerca |
| U series | 0.4300 | ± 0.0200 | Speleothems / flowstone (Sima) | Atapuerca / Cranium 5 |
| ESR | 0.4000 | ± 0.0500 | Tooth enamel | Qesem Cave |
| U series | 0.3000 | ± 0.0300 | Speleothem / peat (context) | Schoningen |
| U series | 0.3000 | ± 0.0500 | U-series on bone (context) | Lazaret Cave / Kabwe 1 |
Fossil Occurrences
The Paleobiology Database records 1 fossil occurrence(s) attributed to Homo heidelbergensis. View on map →
| Identified As | Location | Formation | Age (MYA) |
|---|---|---|---|
| Homo heidelbergensis | DE | – | 0.77 – 0.13 |
Data from the Paleobiology Database (CC-BY).
Scientific References
- (2018). "The evolution of modern human brain shape". Science Advances 4:eaao5961. DOI:10.1126/sciadv.aao5961 (283 citations)