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Select a marker for its evidence and location provenance.
Modern geography, not a reconstructed ancient coastline. Large-scale country locators are used where site coordinates are not verified; overlapping country markers are offset on screen. Basemap: Natural Earth via geo-countries.
Marks and making
What can recurring techniques tell us before their meanings can be decoded?
DHP-001
Shell ornaments at Bizmoune Cave
≥142 ka; minimum, contested
The carbonate association must survive the disagreement with luminescence results.
Observed: A cave in the Essaouira region of Atlantic Morocco, approximately 12 km from the present coast. Excavations between 2014 and 2018 recovered 33 perforated marine shells: all but one from Middle Stone Age layer 4c, the other from layer 4a. Most are Tritia gibbosula, with one Columbella rustica. Layer 4c also contains stone tools, ash and…
Dated material or context: Cave carbonate and tooth; shell age inferred from stratigraphy.
Reading the evidence: The ≥142 ka proposal depends on associated carbonate and stratigraphy.
What remains open: The carbonate association must survive the disagreement with luminescence results.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Does recurring ochre use prove one sacred meaning?
Observed: A southern Cape cave in South Africa with several Middle Stone Age occupation phases. We treat three findings as related research questions but separate pieces of evidence: (a) two abalone shells with a prepared ochre-rich mixture and associated grinding/processing materials from a roughly 100 ka context; (b) deliberately incised ochre…
Dated material or context: Quartz in occupation sediments; not the marks themselves.
Reading the evidence: The materials and marks are observed; their particular meanings remain open.
What remains open: Several phases and kinds of find must not be treated as one event.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: A ceiling panel in Leang Karampuang cave in South Sulawesi, Indonesia, documented in a poor state of preservation. The researchers identify a large painted pig and three human-like figures positioned as if interacting with it. Some details have been lost through exfoliation. The specific action depicted is unclear; the authors explicitly…
Dated material or context: Calcite over a painted figure; not pigment.
Reading the evidence: A minimum age for at least one painted figure, subject to the dating model.
What remains open: The mineral supplies a minimum, and the unity of the scene remains an interpretation.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Pottery fragments were recovered from cave layers in Jiangxi, China. The excavators analyzed the stratigraphy at microscopic scale and dated associated charcoal and bone. They report contexts with early pottery at 20,000–19,000 cal BP, long before local agriculture. Wu et al., Science (2012); Cohen and colleagues, archaeological…
Dated material or context: Charcoal and bone associated with pottery.
Reading the evidence: Pottery appears in foraging contexts; the oldest date is debated.
What remains open: A sample-to-layer-to-sherd chain is needed; the sherds themselves were not directly dated.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Offshore from the Isle of Wight in the western Solent, England, archaeological material survives at several underwater loci, around 11 m below the modern water surface in the investigated area. At BC-II, excavators recovered worked flint from an eroding former land surface. At BC-V, they documented burnt flints, charcoal, worked wood, a…
Dated material or context: Root and wood samples in a stratigraphically ordered model.
Reading the evidence: Human work survives on a former land surface now submerged.
What remains open: This interval dates the modeled end of one feature, not every timber.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Does an inundation date directly date a loose artifact?
Observed: At Cape Bruguieres Channel in Murujuga, northwestern Australia, divers mapped hundreds of stone artifacts in a shallow channel. The 2020 project paper interprets much of the assemblage as remaining on a land surface submerged by postglacial sea-level rise. The Deep History of Sea Country project was undertaken with the approval of the…
Dated material or context: Inundation model; the stone artifacts were not directly dated.
Reading the evidence: The proposed minimum requires a secure pre-inundation context.
What remains open: Hydrodynamic reworking could invalidate the proposed minimum age.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Ngarrindjeri peoples of South Australia tell narratives of the ancestral being Ngurunderi. A 2024 study coauthored by the Ngarrindjeri Aboriginal Corporation and Ngarrindjeri scholar Christopher Wilson compares several narrative elements with independently reconstructed coastal changes: the Younghusband Peninsula, islands near the…
Dated material or context: Independent coastal and geological reconstructions.
Reading the evidence: The event and the account’s transmission have different histories.
What remains open: Event ages are not direct dates of a narrative or its transmission.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Human trackways occur on former lake and wetland surfaces at White Sands National Park, New Mexico. The footprints themselves are physical evidence of people walking across those surfaces. The key question is their age, rather than whether a stone-tool type has been correctly…
Dated material or context: Aquatic seeds, terrestrial pollen, quartz and wetland mud.
Reading the evidence: Terrestrial pollen, quartz, mud, and stratigraphy offer independent checks.
What remains open: Independent materials address the aquatic reservoir concern; they date associated deposits.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: The original investigations reported worked wood, stakes, organic remains, stone artifacts, and plant and marine material in a waterlogged setting. A study of nine marine-algae species from hearths and other features reported direct radiocarbon dates for algae of about 14,220–13,980 cal BP. This is narrower and younger than the often…
Dated material or context: Algae and new sediment/organic chronologies in competing contextual models.
Reading the evidence: Older organic dates and a younger geological reappraisal remain in dispute.
What remains open: Redeposition and tephra correlation are disputed. Neither interval is a consensus occupation age.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Ngarrindjeri peoples of South Australia tell narratives of the ancestral being Ngurunderi. A 2024 study coauthored by the Ngarrindjeri Aboriginal Corporation and Ngarrindjeri scholar Christopher Wilson compares several narrative elements with independently reconstructed coastal changes: the Younghusband Peninsula, islands near the…
Dated material or context: Independent coastal and geological reconstructions.
Reading the evidence: The event and the account’s transmission have different histories.
What remains open: Event ages are not direct dates of a narrative or its transmission.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: A human femur from western Siberia was directly radiocarbon dated to roughly 45 ka and sequenced at high coverage. The researchers identified Neanderthal-derived genomic segments that were longer on average than in many living people. From their lengths, they estimated gene flow into ancestors of this individual roughly 7,000–13,000…
Dated material or context: Directly dated femur; genome used for admixture modeling.
Reading the evidence: It documents ancestry and admixture, without language or mythology.
What remains open: Recombination and generation assumptions affect admixture timing. DNA does not recover mythology.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Madjedbebe is a rock shelter on Mirarr land in northern Australia. Excavations found stone artifacts and pigments in deep occupation bands. The research was conducted through an agreement with the Gundjeihmi Aboriginal Corporation representing Mirarr Traditional Owners. Their account of the collaboration is part of the source record.…
Dated material or context: Sand grains; stratigraphy links sediment age to artifacts.
Reading the evidence: It dates sand; the age of occupation depends on layer integrity.
What remains open: Mixing could move artifacts into older sediment. Refits and sediment studies test that possibility.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Observed: Ohalo II was a lakeside hunter-gatherer camp at the Sea of Galilee (Lake Kinneret). Waterlogging preserved an exceptional quantity of plants. Snir and colleagues, PLOS One (2015) examined approximately 150,000 plant remains, identifying more than 140 gathered species, wild cereals, species that thrive in disturbed ground, and evidence…
Dated material or context: Charcoal and occupation material; not each seed.
Reading the evidence: Plant gathering and processing are supported; cultivation is a separate hypothesis.
What remains open: Gathering, disposal and disturbance can mimic cultivation. Plant use does not demonstrate domestication.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Does a date from fill date every pillar’s construction?
Observed: A Pre-Pottery Neolithic mound near Şanlıurfa in southeastern Türkiye, with carved T-shaped pillars, large round or oval “special buildings,” and smaller structures. The German Archaeological Institute (DAI) currently describes the site as a settlement with a pronounced ritual component. Its project overview gives an approximate span from…
Dated material or context: Organic remains in plaster and building fills.
Reading the evidence: Fill can be later than construction; phases require separate evidence.
What remains open: A fill date may postdate construction; the site span does not date every pillar.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
Does deliberate burial identify a specific belief?
Observed: At a Kenyan cave, excavators documented a pit containing the partial skeleton of a child estimated to have died around age 2½–3. The body lay flexed; bone articulation, decomposition traces, and microscopic analysis of pit and surrounding sediment support deliberate interment. Martínón-Torres et al., Nature…
Dated material or context: Sediments in the burial sequence.
Reading the evidence: The interment is well supported; its specific meaning is unknown.
What remains open: Articulation and microstratigraphy support burial; no date or bone establishes a specific belief.
Why this matters: A dated context and a cultural meaning answer different questions. The complete record explains what was actually sampled.
