Evidence map›Paper›PMID 28860591›Full record

ArticleScientific reports2017

Experimental methods for the Palaeolithic dry distillation of birch bark: implications for the origin and development of Neandertal adhesive technology.

P R B Kozowyk, M Soressi, D Pomstra, G H J Langejans

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
55.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 120 citations in OpenAlex.

  1. Article
  2. Article
  3. Neandertal Cold Adaptation: Technological, Anatomical, and Physiological Responses to Cold Stress in One of Our Closest Fossil Relatives.American journal of human biology : the official journal of the Human Biology Council · 2025
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  11. Archaeological evidence for thinking about possibilities in hominin evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Review
  12. Archaeological adhesives made fromProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  13. Article
  14. Review
  15. Article
  16. Tracking the transition to agriculture in Southern Europe through ancient DNA analysis of dental calculus.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  17. The Zandmotor data do not resolve the question whether Middle Paleolithic birch tar making was complex or not.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  18. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 2 countries.

P R B KozowykFaculty of Archaeology, Leiden University, Leiden, The Netherlands. p.r.b.kozowyk@arch.leidenuniv.nl.
M SoressiFaculty of Archaeology, Leiden University, Leiden, The Netherlands.ORCID 0000-0003-1733-7745
D PomstraHet Stenen Tijdperk, Wezep, The Netherlands.
G H J LangejansFaculty of Archaeology, Leiden University, Leiden, The Netherlands.
Leiden University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The destructive distillation of birch bark to produce tar has recently featured in debates about the technological and cognitive abilities of Neandertals and modern humans. The abilities to precisely control fire temperatures and to manipulate adhesive properties are believed to require advanced mental traits. However, the significance given to adhesive technology in these debates has quickly outgrown our understanding of birch bark tar and its manufacture using aceramic techniques. In this paper, we detail three experimental methods of Palaeolithic tar production ranging from simple to complex. We recorded the fuel, time, materials, temperatures, and tar yield for each method and compared them with the tar known from the Palaeolithic. Our results indicate that it is possible to obtain useful amounts of tar by combining materials and technology already in use by Neandertals. A ceramic container is not required, and temperature control need not be as precise as previously thought. However, Neandertals must have been able to recognize certain material properties, such as adhesive tack and viscosity. In this way, they could develop the technology from producing small traces of tar on partially burned bark to techniques capable of manufacturing quantities of tar equal to those found in the Middle Palaeolithic archaeological record.

Indexed as

AdhesivesAnimalsArchaeologyBetulaDistillationHumansNeanderthalsPlant BarkPlant MucilageTarsTechnologyAdhesivesPlant MucilageTars

Identifiers

PMID28860591
PMCPMC5579016
OpenAlexW2742945565

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.