Interactive IBD Maps

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Interactive IBD Maps – explore shared genetic segments (Identity by Descent, IBD) between ancient and modern populations. IBD segments are inherited from common ancestors; over generations, recombination breaks these segments into smaller pieces, causing them to become shorter and less frequent over time. By mapping the distribution and strength of IBD connections, it is possible to trace patterns of ancestry, population continuity, and historical migrations across time and space.


Coverage of samples after AD 1300 is relatively sparse and should be treated with caution. It is also important to consider the major cremation-related gaps in the ancient DNA record of Northern Europe, where widespread cremation practices substantially reduced the availability of recoverable human remains for genetic analysis.


Database: more than 3.2 million individual IBD connections exceeding 7 cM, derived from published ancient DNA datasets.
https://genarchivist.net/showthread.php?tid=2424&pid=72649#pid72649
https://drive.google.com/file/d/1vHjDgjCmcnU5gbCTOf2pcKEN6ahCG6sX/view?usp=sharing


Sample dating and geographic coordinates are based on the supplementary data of Akbari et al. (2026). The database contains a small number of apparent inconsistencies, such as an Afanasievo sample plotted in Germany and a Slovakia Yamnaya sample dated approximately 1,000 years earlier than in the Lazaridis dataset. These anomalies are retained from the original source data and should be interpreted with caution.
https://static-content.springer.com/esm/art%3A10.1038%2Fs41586-024-08531-5/MediaObjects/41586_2024_8531_MOESM4_ESM.xlsx


Poland_CordedWare
Poland_Southeast_CordedWare
Poland_Southeast_BellBeaker
https://polandcw.netlify.app/


Etruscan samples
https://etrus.netlify.app/


Lithuanian Late Neolithic
https://lithuanialn.netlify.app/

and Spiginas2 alone
https://spiginas.netlify.app/

Lithuanian Marvele IA
https://marveleia.netlify.app/

Trzciniec and Strzyżow
https://trzciniecstrzyzow.netlify.app/

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Russia IA, Imenkovo, Tanais, and Meotian samples are grouped together for convenience as potential eastern Slavic-related reference populations.
https://russiaia.netlify.app/

Chernyakhiv Culture
https://chernyahk.netlify.app/

The Volhynian Lusatian Culture is currently represented by a limited number of samples. Unfortunately, no additional individuals from this group are presently available in the cross-population IBD dataset, which restricts broader comparisons and interpretations.
https://lusatian.netlify.app/


Estonia IA
https://estoniaia.netlify.app/


Poland IA Wielbark (inhumation) samples
https://polandia.netlify.app/

Poland MA
https://polandmaibd.netlify.app/

Roman-period Slavic-related individuals from Mursa and Viminacium
https://viminaciummursa.netlify.app/

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Anonymized Slavic-associated samples from Central Europe dated to around AD 650. Their exact ethnic identities and exact location remain uncertain; at most, it can be hypothesized that they may have included groups associated with:
Veneti?
https://pickleslavs.netlify.app/

Antes?
https://fluffl.netlify.app/

Sclaveni?
https://twslavs.netlify.app/

It is also possible that some of these samples originate from an upcoming study by Vyazov on the Great Moravian sphere, although this has not been formally confirmed.

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Early Netherlands_Friesland_Medieval_Saxon
https://frieslandsaxons.netlify.app/

Scandinavian Iron Age samples
https://scandinaviaia.netlify.app/

Eastern Scandinavian Iron Age samples.*
https://eastscania.netlify.app/

*In my view, they likely postdate the arrival of groups from Estonia already enriched with Seima-Turbino-related ancestry, at least as suggested by the genetic patterns observed between the Estonian Bronze Age and Iron Age populations.


Estonia BA
https://estoniaba.netlify.app/

Latvia BA
https://latviabage.netlify.app/