Something is very wrong with models based on the so-called ‘Yamnaya admixture’ – and archaeologists are catching up (II)

A new article by Leo S. Klejn tries to improve the Northern Mesolithic Proto-Indo-European homeland model of the Russian school of thought: The Steppe hypothesis of Indo-European origins remains to be proven, Acta Archaeologica, 88:1, 193–204.


Recent genetic studies have claimed to reveal a massive migration of the bearers of the Yamnaya culture (Pit-grave culture) to the Central and Northern Europe. This migration has supposedly lead to the formation of the Corded Ware cultures and thereby to the dispersal of Indo-European languages in Europe. The article is a summary presentation of available archaeological, linguistic, genetic and cultural data that demonstrates many discrepancies in the suggested scenario for the transformations caused by the Yamnaya “invasion” some 5000 years ago.


Both teams [Reich/Anthony, and Willerslev/Kristiansen] interpreted this resemblance in the same way: as evidence of mass migration of the Yamnaya culture from the steppes into the Central and Northern Europe, resulting in the formation of the Corded Ware cultures, and these are universally recognised as Indo-European. Since earlier in this part of Europe existed a different pool of genomes, geneticists presumed that the Yamnaya migration alone had brought the Indo-European languages into Europe. It is difficult to say to what extent the pre-convictions of the involved archaeologists influenced these conclusions, or whether the results of the genetic studies attracted archaeologists with such beliefs.

Mismatch of cultural manifestations

First, we might question the idea of the Yamnaya culture as a unity rather than a loose conglomerate of cultures. Merpert (1974) divided it into nine local groups but did not recognise them as separate cultures. However, in 1975 I suggested that Nerushay (Budzhak) monuments should be recognised as a distinct culture (Klejn 1975), although still as a part of the same broader steppe community.

This was accepted by other specialists (Ivanova 2012; 2013; 2014). Generally, in the western branch of this community, a mixture of the eastern rites of interment with local, Balkan ceramics can be observed. It should be noted that hitherto all genetic samples were taken from eastern material (in the vicinity of Samara in the Volga basin and Kalmykia), while the central thesis concerns the intrusion of the western branch of this community (Budzhak culture) into Europe.

The spread of cultural-historical communities of the Yamnaya culture and the location of the Budzhak culture. GAC – Globular Amphora culture; CWC – Corded Ware culture. After Ivanova 2013.

Simultaneity of cultures

The Yamnaya culture (Chernykh & Orlovskaya 2004a; Heyd 2011; Frȋnculeasa et al. 2015) appears not to be the predecessor of the Corded Ware cultures but is contemporary with them. The Corded Ware cultures appeared also around the turn between the fourth and third millennium BC (Stöckli 2001; Furholt 2003). Their derivation from the Yamnaya seems, therefore, to be less probable. This is evidenced by the fact that the corded beakers or amphorae found in the Budzhak culture are not the prototypes of the corded beakers or amphorae found in more northern territories, but seem instead to be an outcome of contemporaneous contacts (Ivanova 2014; Klejn 2017c).

Discrepancies across the haplogroups

Even more remarkable is the variation in the distribution of types of Y chromosome. In the Yamnaya population, R1b is not just a single occurrence (there are about seven known occurrences) while in the Corded Ware population a different clade of R1b is found and R1a is predominant (several instances). Thus the postulate of unbroken succession finds no support!

Distribution of artefacts and customs of the Yamnaya culture in the area of the Corded Ware cultures. After Bátora 2006.

Paradoxical gradient

In the tables presented in the article by Reichs’ team (Haak et al. 2015) the genetic pool connecting the Yamnaya culture with the Corded Ware people is shown to be more intense in Northern Europe (Norway and Sweden) and decreases gradually from the North to the South (Fig. 6). It is weakest around the Danube, in Hungary, i. e. areas neighbouring the western branch of the Yamnaya culture! This is the reverse image to what the proposed hypothesis by the geneticists would lead us to expect. It is true that this gradient is traced back from the contemporary materials, but it was already present during the Bronze Age (Klejn 2015a).

The author also uses questionable interpretations from selected articles to advance his (as of today) untenable positions regarding a Mesolithic origin of the reconstructible Proto-Indo-European language.

1. Glottochronology, for a PIE origin:

If based on the data of glottochronology (taking into account all disputes) the period of initial dispersal is to be dated to the 7th-5th millennium BC.

2. Doubts on the origin of R1b-L51 subclades expressed in Genetic differentiation between upland and lowland populations shapes the Y-chromosomal landscape of West Asia, by Balanovsky et al. (2017), Human Genetics 136, 4. 437-450:

The currently available dataset does not contradict the hypothesis that R-GG400 marks a link between the East European steppe dwellers and West Asians, though the route and even direction of this migration is disputable. It does, however, demonstrate that present-day West European R1b chromosomes do not originate from the Yamnaya populations analyzed in (Haak et al. 2015; Mathieson et al. 2015) and raises the question of their origin. A Bronze Age origin is more likely than a Neolithic one (Balaresque et al. 2010), but further ancient DNA studies may be necessary to identify this source.

Just yesterday I read the post The retraction paradox: Once you retract, you implicitly have to defend all the many things you haven’t yet retracted, by Andrew Gelman. While – in my opinion – the post does not live up to its title, it poses an interesting question, as to how ad logicam (fallacy fallacy) is often used today in research: One author proposes something that is later demonstrated to be wrong, so everything they wrote or write can be said ipso facto to be wrong…especially if they accept that it was wrong.

This is usual with amateur geneticists (those who don’t publish, and are therefore not subjected to criticism): if anyone is wrong (whether in Archaeology or Genetics), then they are wrong in everything else. It seems to me that Klejn’s theses against recent genetic results rest on the same assumption: The Yamna -> Corded Ware migration model is wrong, ergo the Yamna homeland model is wrong.

I guess this same fallacy is what a lot of angered geneticists (whether professional or amateurs) are going to use to dismiss Klejn’s criticism, trying to focus on what he clearly does not grasp – about genomic data of Yamna peoples and their expansion – to disregard his doubts on genetic interpretations entirely.

I have warned many times about how simplistic interpretations of genetic data would cause a general mistrust in the field, and that archaeologists won’t take the discipline seriously, no matter how many articles get published in famous research tabloids like Nature or Science…

Those who dismiss this warning lightly seem to forget the fate of other recent “scientific breakthroughs” which were initially so promising that Humanities appeared to matter no more, like glottochronology for Linguistics and, to some extent, that of radiocarbon analysis for Archaeology.
EDIT: see here a recent example of discusion on discrepancies between archaeological and 14C-based chronologies, whereby ‘scientific data’ obviously needs archaeological context for a meaningful interpretation

Featured image: The direction of the supposed migration of the bearers of the Yamnaya culture into the area of the Corded Ware cultures. After Haak et al. 2015.

NOTE: I obviously don’t agree with Klejn’s main model: he criticises the Proto-Indo-European steppe homeland, and more specifically the expansion of Yamna peoples with R1b-L23 subclades, which I support. But, probably because of his “pre-convictions” (as he puts it when describing proponents of the steppe hypotheses) about the Proto-Indo-European homeland in Northern Europe during the Mesolithic, he was one of the first renown archaeologists to criticise the obvious inconsistencies in the genetic model of migrations based exclusively on the “Yamnaya ancestral component” concept, and to provoke the necessary reaction from (until then) overconfident geneticists, and he deserves credit for that.

In my opinion, the Russian school’s “Northern European Mesolithic” homeland model – as I have said before – could be based on the appearance of EHG ancestry, or maybe on the expansion of haplogroup R1b with post-Swiderian cultures, but the timeframe proposed is too early for any reconstructible parent proto-language, even for Indo-Uralic.


Modern Hungarian mtDNA more similar to ancient Europeans than to Hungarian conquerors


New preprint at BioRxiv, MITOMIX, an Algorithm to Reconstruct Population Admixture Histories Indicates Ancient European Ancestry of Modern Hungarians, by Maroti et al. (2018).

The estimated age distribution of the shared mt Hgs between Hungarians (Hun), the best hypothetical admix (mixFreq) and the populations contributing to this admix: Belgian/Dutch (BeN), Danish (Dan), Basque (Bsq), Croatian/Serbian (CrS), Baltic Late Bronze Age culture (BalBA), Bell Beaker culture (BellB), Slovakian (Slo). The numbers in parentheses indicate the contributions to the best hypothetical admix.

Abstract (emphasis mine)

By making use of the increasing number of available mitogenomes we propose a novel population genetic distance metric, named Shared Haplogroup Distance (SHD). Unlike FST, SHD is a true mathematical distance that complies with all metric axioms, which enables our new algorithm (MITOMIX) to detect population-level admixture based on SHD minimum optimization. In order to demonstrate the effectiveness of our methodology we analyzed the relation of 62 modern and 25 ancient Eurasian human populations, and compared our results with the most widely used FST calculation. We also sequenced and performed an in-depth analysis of 272 modern Hungarian mtDNA genomes to shed light on the genetic composition of modern Hungarians. MITOMIX analysis showed that in general admixture occurred between neighboring populations, but in some cases it also indicated admixture with migrating populations. SHD and MITOMIX analysis comply with known genetic data and shows that in case of closely related and/or admixing populations, SHD gives more realistic results and provides better resolution than FST. Our results suggest that the majority of modern Hungarian maternal lineages have Late Neolith/Bronze Age European origins (partially shared also with modern Danish, Belgian/Dutch and Basque populations), and a smaller fraction originates from surrounding (Serbian, Croatian, Slovakian, Romanian) populations. However only a minor genetic contribution (<3%) was identified from the IXth Hungarian Conquerors whom are deemed to have brought Hungarians to the Carpathian Basin. Our analysis shows that SHD and MITOMIX can augment previous methods by providing novel insights into past population processes.

Unrooted hierarchic cluster of modern and archaic populations based on the SHD matrix.

It is interesting to keep receiving data as to how language does not correlate well with Genomics, whether admixture or haplogroups, even though it is already known to happen in regions such as Anatolia, the Baltic, South-Eastern or Northern Europe.

Thorough anthropological models of migration or cultural diffusion are necessary for a proper interpretation of genetic data. There is no shortcut to that.

Co-occurrence of Hungarian Bronze Age mt Hgs Distribution of mt Hgs found in Hungarian Bronze Age archaic samples in the analyzed populations. The fixation dates are based on Behar et al [6].

Images made available under a CC-BY-NC-ND 4.0 International license.
See also:

Ancient Phoenician mtDNA from Sardinia, Lebanon reflects settlement, genetic diversity, and female mobility


New article at PLOS One, Ancient mitogenomes of Phoenicians from Sardinia and Lebanon: A story of settlement, integration, and female mobility, by Matisoo-Smith et al. (2018).


The Phoenicians emerged in the Northern Levant around 1800 BCE and by the 9th century BCE had spread their culture across the Mediterranean Basin, establishing trading posts, and settlements in various European Mediterranean and North African locations. Despite their widespread influence, what is known of the Phoenicians comes from what was written about them by the Greeks and Egyptians. In this study, we investigate the extent of Phoenician integration with the Sardinian communities they settled. We present 14 new ancient mitogenome sequences from pre-Phoenician (~1800 BCE) and Phoenician (~700–400 BCE) samples from Lebanon (n = 4) and Sardinia (n = 10) and compare these with 87 new complete mitogenomes from modern Lebanese and 21 recently published pre-Phoenician ancient mitogenomes from Sardinia to investigate the population dynamics of the Phoenician (Punic) site of Monte Sirai, in southern Sardinia. Our results indicate evidence of continuity of some lineages from pre-Phoenician populations suggesting integration of indigenous Sardinians in the Monte Sirai Phoenician community. We also find evidence of the arrival of new, unique mitochondrial lineages, indicating the movement of women from sites in the Near East or North Africa to Sardinia, but also possibly from non-Mediterranean populations and the likely movement of women from Europe to Phoenician sites in Lebanon. Combined, this evidence suggests female mobility and genetic diversity in Phoenician communities, reflecting the inclusive and multicultural nature of Phoenician society.

Haplogroup assignments, dates, locations and Genbank accession details of all aDNA samples included in analyses.

Featured image, from the article: Map showing phoenician maritime expansions across the Mediterranean starting from around 800 BCE. Arrows indicate maritime movement. Blue dots indicate coastal sites and pink shaded areas indicate the extent of Phoenician settlements.

See also:

Science and Archaeology (Humanities): collaboration or confrontation?

Allentoft Corded Ware

Another discussion on the role of Science for Archaeology, in The Two Cultures and a World Apart: Archaeology and Science at a New Crossroads, by Tim Flohr Sørensen, Norwegian Archaeological Review, vol. 50, 2 (2017):

Within the past decade or so, archaeology has increasingly utilised and contributed to major advances in scientific methods when exploring the past. This progress is frequently celebrated as a quantum leap in the possibilities for understanding the archaeological record, opening up hitherto inaccessible dimensions of the past. This article represents a critique of the current consumption of science in archaeology, arguing that the discipline’s grounding in the humanities is at stake, and that the notion of ‘interdisciplinarity’ is becoming distorted with the increasing fetishisation of ‘data’, ‘facts’ and quantitative methods. It is argued that if archaeology is to break free of its self-induced inferiority to and dependence on science, it must revitalise its methodology for asking questions pertinent to the humanities.

Commentators in the discussion include:

The answer of Sørensen to them is on Archaeological Paradigms: Pendulum or Wrecking Ball?. Excerpts:

Thus, I argue that what we are witnessing with ‘the third science revolution’ (Kristiansen 2014) is precisely the proliferation of an already very authoritative science ideal in archaeology. And I worry that this dominance will limit research possibilities and potentials rather than encouraging plurality and radical experimentation with different forms of knowing.
I do believe in the coexistence of disparate academic principles and that collaboration is very often necessary, but I am also of the conviction that some degree of epistemological friction keeps both fields of research progressing. Nurturing distinctions, in other words, is no less useful than aiming for assimilation. What I am arguing for is thus a more respectful friction than the one characterising the processual/post-processual collisions, hoping for an academic environment where differences between research ideals are humbly accepted and cultivated precisely for their disparate strengths.
So, what I am arguing for is a more kaleidoscopic academic landscape, where different positions do not always have to assume a defensive or compromising stance, especially in confrontation with paradigms that are prospering politically. This also implies that science is not simply in the service of archaeology, as Lidén argues, but that we need to consider how archaeology may benefit science more generally by continuing to debate epistemological grounds, methodology and our modes of inquiry. And so, my fellow archaeologists: ask not what science can do for us, but what we can do for science.
In my original article, I addressed the widespread tendency in archaeology to disseminate research findings with sometimes too much conviction, where ambiguous results (and limited statistical data) are adopted with little concern for the inherent uncertainties. It is precisely this valorisation and authority of scientific observations that I claim to lead to an implicit devaluation of studies based in the humanities. The problem is – as stated numerous times in my original article – not science, but the consumption of scientific observations in archaeology, where the subtleties and not least ambiguities of scientific results are filtered out, leaving space almost exclusively for scientifically ‘proven’ facts and unequivocal results. This mode of consumption stands in direct contrast to the epistemological observation in the sciences, dictating that ‘“proof” and “certainty” are actually in short supply in the world of science’ (Freudenburg et al. 2008, p. 5). Hence, the risk is that archaeology somewhat uncritically adopts scientific observations that are in fact ‘empirically underdetermined – based largely on evidence that is in the category of the “maybe,” being inherently ambiguous rather than being absolutely clear-cut’ (Freudenburg et al. 2008, p. 6).

As I said recently on the article Massive Migrations…, by Martin Furholt, we are living a historical debate on essential questions for the future of all these disciplines.

And, as always, there is no shortcut to reading the texts. Unlike in Science, you cannot write a table with a summary of findings…

Discovered (again) via a comment on this blog by Joshua Jonathan.

Featured image from Allentoft et al. “They conclude that the Corded Ware culture of central Europe had ancestry from the Yamnaya. Allentoft et al. also show that the Afanasievo culture to the east is related to the Yamnaya, and that the Sintashta and Andronovo cultures had ancestry from the Corded Ware. Arrows indicate migrations — those from the Corded Ware reflect the evidence that people of this archaeological culture (or their relatives) were responsible for the spreading of Indo-European languages. All coloured boundaries are approximate.”


Recent archaeological finds near Indo-European and Uralic homelands


The latest publication of Documenta Praehistorica, vol. 44 (2017) is a delight for anyone interested in Indo-European and Uralic studies, whether from a linguistic, archaeological, anthropological, or genetic point of view. Articles are freely downloadable from the website.

The following is a selection of articles I deem more interesting, but almost all are.

On the Corded Ware culture

Do 14C dates always turn into an absolute chronology? The case of the Middle Neolithic in western Lesser Poland, by Marek Novak:

In the late 5th, 4th, and early 3rd millennia BC, different archaeological units are visible in western Lesser Poland. According to traditional views, local branches of the late Lengyel-Polgár complex, the Funnel Beaker culture, and the Baden phenomena overlap chronologically in great measure. The results of investigations done with new radiocarbon dating show that in some cases a discrete mode and linearity of cultural transformation is recommended. The study demonstrates that extreme approaches in which we either approve only those dates which fit with our concepts or accept with no reservation all dates as such are incorrect.

Territory of western Lesser Poland and the main archaeological units in the late 5th, 4th and early 3rd millennia BC: 1 borders of the area discussed in the paper; 2 sites of the Lublin-Volhynian culture; 3 the Wyciąże-Złotniki group; 4 the Funnel Beaker culture (a dense settlement typical of ‘loess’ upland; b more dispersed settlement typical of foothills, alluvial plains/basins and ‘jurassic zones; c highly dispersed settlement typical mainly of mountainous zone); 5 sites with the Wyciąże/Niedźwiedź materials; 6 the Baden culture, 7 the Beaker/Baden assemblages; 8 Corded Ware culture (a relatively dense settlement typical mainly of ‘loess’ upland; b highly dispersed settlement typical of other ecological zones).

This article brings new data against David Anthony’s new IECWT model, suggesting later dates for the Corded Ware Culture group of Lesser Poland, and thus an earlier origin of their nomadic herders in the steppe, forest-steppe or forest zone to the east and south-east.

On the Pontic-Caspian steppe and forest-steppe

First isotope analysis and new radiocarbon dating of Trypillia (Tripolye) farmers from Verteba Cave, Bilche Zolote, Ukraine, by Lillie et al.:

This paper presents an analysis of human and animal remains from Verteba cave, near Bilche Zolote, western Ukraine. This study was prompted by a paucity of direct dates on this material and the need to contextualise these remains in relation both to the transition from hunting and gathering to farming in Ukraine, and their specific place within the Cucuteni-Trypillia culture sequence. The new absolute dating places the remains studied here in Trypillia stages BII/CI at c. 3900–3500 cal BC, with one individual now redated to the Early Scythian period. As such, these finds are even more exceptional than previously assumed, being some of the earliest discovered for this culture. The isotope analyses indicate that these individuals are local to the region, with the dietary stable isotopes indicating a C3 terrestrial diet for the Trypillia-period humans analysed. The Scythian period individual has δ13C ratios indicative of either c. 50% marine, or alternatively C4 plant inputs into the diet, despite δ18O and 87Sr/86Sr ratios that are comparable to the other individuals studied.

Map showing the extent of the Trypillia culture of Ukraine and
neighbouring countries, key sites and the location of Verteba Cave ©WAERC
University of Hull.

New data on one of the cultures that was very likely a close neighbour of Corded Ware peoples.

Chronology of Neolithic sites in the forest-steppe area of the Don River, by Smolyaninov, Skorobogatov, and Surkov:

The first ceramic complexes appeared in the forest-steppe and forest zones of Eastern Europe at the end of the 7th–5th millennium BC. They existed until the first half of the 5th millennium BC in the Don River basin. All these first ceramic traditions had common features and also local particularities. Regional cultures, distinguished nowadays on the basis of these local particularities, include the Karamyshevskaya and Middle Don cultures, as well pottery of a new type found at sites on the Middle Don River (Cherkasskaya 3 and Cherkasskaya 5 sites).

Radiocarbon chronology of Neolithic in the Lower Don and North-eastern Azov Sea, by Tsybryi et al.:

So far, four different cultural-chronological groups of sites have been identified in the North-eastern Azov Sea and Lower Don River areas, including sites of the Rakushechny Yar culture, Matveev Kurgan culture, Donets culture, and sites of the Caspian-Ciscaucasian region. An analysis of all known dates, as well as the contexts and stratigraphies of the sites, allowed us to form a new perspective of the chronology of southern Russia, to revise the chronology of this region, and change the concept of unreliability of dates for this area.

On the Forest Zone

The past in the past in the mortuary practice of hunter-gatherers: an example from a settlement and cemetery site in northern Latvia, by Lars Olof Georg Larsson:

During excavations of burials at Zvejnieki in northern Latvia, it transpired that the grave fill included occupation material brought to the grave. It contained tools of a type that could not be contemporaneous with the grave. This is confirmed by the dating of bone tools and other bone finds in the fill. The fill was taken from an older settlement site a short distance away. The fill also included skeletal parts of humans whose graves had been destroyed with the digging of the grave for a double burial. This provides an interesting view of the mortuary practice of hunter-gatherers and an insight into the use of the past in the past.

The Zvejnieki site with the location of the burial ground, the settlements,
the farmhouse on the site and the gravel pit.

I keep expecting that more information is given regarding the important sample labelled “Late Neolithic/Corded Ware Culture” from Zvejnieki ca. 2880 BC. It seems too early for the Corded Ware culture in the region, clusters too close to steppe samples, and the information on it from genetic papers is so scarce… My ad hoc explanation of these data – as a product of recent exogamy from Eastern Yamna -, while possibly enough to explain one sample, is not satisfying without further data, so we need to have more samples from the region to have a clearer picture of what happened there and when. Another possibility is a new classification of the sample, compatible with later migration events (a later date of the sample would explain a lot). Anyway, this article won’t reveal anything about this matter, but is interesting for other, earlier samples from the cemetery.

Other articles on the Forest Zone include:

Other articles include studies on Neolithic sites, potentially relevant for Indo-European migrations, such as Anatolia, Greece, southern or south-eastern sites in Europe. Check it out!


New monograph on The Tale of Igor’s Campaign (in Russian)


Sergej Nikolaev has published a new monograph on The Tale of Igor’s Campaign (you should download and open it in a PDF viewer to view some special characters correctly):

Слово о полку Игореве»: реконструкция стихотворного текста, by С.Л. Николаев (2018).

Abstract (in Russian).

Текст «Слова о полку Игореве» (далее «Слово») дошел до нас в двух неточных (отредактированных) копиях со списка нач. XVI в. и нескольких выписках из него. Наслоения, привнесенные переписчиком нач. XVI в. (или несколькими переписчиками) – редактура в русле 2 го южнославянского влияния и поздние диалектизмы – непоследовательны (§9.3.1) и не настолько исказили стихотворный текст рубежа XII–XIII вв., чтобы сделать невозможной его реконструкцию. «Слово» по своему жанру (светская поэзия) не принадлежит к текстам, которые по многу раз переписывались в монастырских скрипториях. Поэтому не исключено, что рукопись нач. XVI в. является хотя и небрежной, но первой по счету копией древнерусского оригинала.

«Слово» могло звучать приблизительно так, как я предлагаю в своей реконструкции, морфология и акцентология языка его автора могли быть устроены так, как я предполагаю, и оно могло быть создано в реконструируемой мною системе стихосложения. Однако в действительности многое могло быть устроено иначе. Реконструкция акцентологической системы и две другие гипотезы (о неравносложной силлаботонике и об опциональном прояснении слабых редуцированных) замкнуты друг на друге и образуют circulus in probando. Реконструируемая для «Слова» акцентологическая система выводится из праславянской реконструкции и подтверждается данными современных диалектов, однако она не засвидетельствована в древнерусских памятниках. Слабым местом моей реконструкции является прояснение слабых редуцированных в позициях, где оно нужно исключительно из метрических соображений. В работе, подобной этой, невозможно избежать домыслов и рискованных допущений, ряд выдвинутых гипотез находится «на грани фола», однако в целом моя реконструкция построена на фактах и их интерпретациях, являясь таким образом научным исследованием. В работе используютмя результаты смежных наук ‒ в первую очередь стиховедения. Представленная в настоящей книге реконструкция «Слова» является первым опытом системного моделирования стихотворного текста на гипотетическом древнерусском диалекте XII‒XIII в., существование которого весьма вероятно. Мне хотелось бы надеяться, что моя работа внесет свою скромную лепту в изучение великого памятника древнерусской литературы.

The Tale of Igor’s Campaign is probably the oldest Slavic epic available, recorded later than what oral tradition and linguistic details reflect, like the oldest Indo-Iranian texts. It contains many details interesting for Proto-Slavic (and North-West Indo-European) language and culture reconstruction.

For those confusing recent attestation of languages with their relevance for comparative grammar, I would suggest Martin Joachim Kümmel‘s article Is ancient old and modern new? Fallacies of attestation and reconstruction (with special focus on Indo-Iranian).

Featured image: Viktor Vasnetsov. After Igor Svyatoslavich’s fighting with the Polovtsy (Photographer, referenced in Wikipedia).