Introduction
The upper Dniester basin—a zone on the border between forest-steppe and forest—is an area where several thousand burial mounds from the late Eneolithic and Bronze Age occur. These date more precisely to the 3rd millennium and the first half of the 2nd millennium BC (Sulimirski Reference Sulimirski1968; Sveshnikov Reference Sveshnikov1974; Machnik et al. Reference Machnik, Pavliv and Petehyryč2006, Reference Machnik, Pawliw and Petehyrycz2011; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016, Reference Makarowicz, Niebieszczański, Cwaliński, Romaniszyn and Kochkin2019). They create vast cemeteries located on river watersheds in the elevated parts of the landscape. In similar barrows from the Black Sea steppe and forest-steppe or from the Carpathian Basin and the Balkans, primary burials (of the builders of the barrows) are positioned under the mounds, while secondary burials are dug into them (e.g., Anthony Reference Anthony2007; Ivanova Reference Ivanova2021; Heyd et al. Reference Heyd, Kulcsár and Preda-Bălănică2021). In contrast, the Upper Dniester monuments were rarely used by subsequent cultures (Sulimirski Reference Sulimirski1968; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016, Reference Makarowicz, Goslar, Niebieszczański, Cwaliński, Kochkin, Romaniszyn, Lysenko and Ważny2018, Reference Makarowicz, Niebieszczański, Cwaliński, Romaniszyn and Kochkin2019).
Based on relative dating methods, the older phase of barrow necropolises in the study area is of the Corded Ware culture (CWC) and dates to the Late Eneolithic (2900/2800–2200 BC), while the younger phase is represented by the Komarów culture (KC) of the Middle Bronze Age (1800/1700–1400 BC), which was a local variant of the Trzciniec Cultural Circle (TCC; Makarowicz Reference Makarowicz2010). In barrow burials, the deceased were buried individually or collectively, and their bodies were sometimes cremated in situ in graves with wooden and wood-stone constructions. The CWC graves were dominated by burials of inhumed individuals, mainly adult males, while the KC graves were used for the burial of the dead of both sexes as well as children, often in groups. Grave goods of various materials were provided for the dead: dishes, ritual food and drinks, hand, leg, and head decorations, and sometimes weapons. Wealth was usually greater in graves from the 2nd millennium BC.
In the borderland between the forest and forest steppe area, the under-barrow architecture from the Middle Bronze Age is more spectacular and includes various stone and wood structures, especially the so-called mortuary houses. In contrast, in the case of the CWC community, simple grave pits lacking additional structures or with wooden constructions such as logs or coffins/timbers are common (Swiesznikow Reference Swiesznikow1967; Sulimirski Reference Sulimirski1968; Sveshnikov Reference Sveshnikov1974; Romaniszyn Reference Romaniszyn2015; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016; Romaniszyn and Makarowicz Reference Romaniszyn and Makarowicz2021).
The aim of this article is to create a chronological model of the burials from the 3rd and 2nd millennia BC discovered under the mounds of three barrows in the Kordyshiv cemetery, Site VIII, Shumsk District, Tarnopil Province, in western Ukraine. Bayesian modeling of 27 AMS 14C dates obtained for 21 individuals buried in single and collective graves as well as a dietary analysis of stable carbon (δ13C) and nitrogen (δ15N) isotope values are presented. The Bayesian modeling and discussion of the burials and burial mounds in the studied cemetery also considers the archaeological data comprising the analysis of artifacts deposited in the graves.
Archaeological Background
The necropolis in Kordyshiv is located in the northwestern part of the Podolia Upland, almost on the border with the Volhynian Upland, about 15 km east of the Krzemieniec Hills (Ilchyshyn Reference Ilchyshyn2016). The cemetery is situated on a flattened part of a promontory, which is a fragment of a hill on the watershed between the Vilia River, about 300 m northwest of its modern course, and 600–700 m southeast of the Shipinka Stream that flows into a small lake (Figure 1). According to reports from the late 19th century, about 20 mounds were still visible in this area at that time (Teodorovich 1983). Contemporary field-walking research has not revealed the indisputable presence of barrows. Only extensive, low “hills” arranged in a linear alignment were visible, marking the places where the three burial mounds were situated.
Figure 1 Location of the barrow cemetery in Kordyshiv, western Ukraine.
Archaeological excavations have explored several burials within three clusters that were originally located under the mounds. The presence of mounds may be evidenced by the compact arrangement of graves (“in a circle”) and the darker color of the earth within the area of barrow 1. However, the ranges of the barrows could be determined only indicatively, due to the significant degree of destruction caused by deep ploughing in modern times (Figures 2–4).
Figure 2 Kordyshiv. Schematic plan of Barrow 1 and the collective Komarów culture burial from the Middle Bronze Age.
Figure 3 Kordyshiv. Schematic plan of Barrow 2 and the Late Eneolithic epi-Corded Ware culture and Middle Bronze Age Komarów culture burials.
Figure 4 Kordyshiv. Schematic plan of Barrow 3 and Komarów culture burials from the Middle Bronze Age.
In Barrow 1, a collective burial of four cremated individuals representing the KC was recorded. 14C dates were obtained only for two of the four individuals (Individuals 3 and 4 from Burial 1) and for the wooden structure of the grave (Table 1). In Barrow 2, four CWC burials (Burials 1, 2, 7, and 8) and a skull between the first two (probably from Individual 2), as well as three KC burials (Burials 5, 6, and 9) were discovered. All Barrow 2 burials excluding Burial 8 have been dated (Table 1). In Barrow 3, five KC burials were documented: Burials 1, 4, 7, and 9 (all double burials) and Burial 2 (a collective burial of six individuals), for which a total of 17 14C dates were obtained.
Table 1 14C ages of samples collected from the graves described in the text. Values of %coll/C/Nat represent collagen extraction yields and atomic C/N ratios measured in collagen
M—male, F—female.
The grave goods that accompanied the deceased in the Middle Bronze Age KC were spectacular and comprised numerous bronze items (bracelets, pins for fastening funeral robes), and ceramic vessels (Ilchyshyn Reference Ilchyshyn2016). A preliminary archaeological analysis based on the typo-chronology of several grave goods (a stone axe, fragments of vessels, and flints) indicates the CWC burials date to a later phase of development, generally referred to as late CWC or epi-CWC, while both older and younger assemblages can be distinguished within the periodization of the burials from the KC group (Sulimirski Reference Sulimirski1968; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016).
Materials and Methods
Radiocarbon Dating
Radiocarbon dating of materials from the studied monuments in Kordyshiv was performed at the Poznań Radiocarbon Laboratory and included 26 bone samples from 21 human skeletons and 1 sample of charcoal (Table 1). Samples of bone were dated using collagen extracted with the Longin method (1971) supplemented by removal of humic substances in a NaOH solution and ultrafiltration (on Vivaspin® Turbo 15 PES, MWCO 30 kDa) of the extract (Bronk Ramsey et al. Reference Bronk Ramsey, Higham, Bowles and Hedges2004; Brock et al. Reference Brock, Higham, Ditchfield and Bronk Ramsey2010). Good preservation of the extracted collagen samples was indicated by collagen yield and the atomic ratio of C/N (Table 1) that fell within the intervals recommended by van Klinken (Reference van Klinken1999). Cremated bones, having no collagen preserved, were dated using carbon from structural carbonates (apatites), extracted with the procedure of Lanting et al. (Reference Lanting and van der Plicht2001). For this purpose, only calcined bones white in color, indicating that they were cremated at high temperatures of 800°C or more (Walker et al. Reference Walker, Miller and Richman2008), were chosen for analysis.
Portions of CO2 resulting from the combustion of collagen or decomposition of structural carbonate were graphitized with hydrogen (H2), and isotopic ratios 14C/12C and 13C/12C in the graphite were measured with a “Compact Carbon AMS” spectrometer (Goslar et al. Reference Goslar, Czernik and Goslar2004).
Recent research on the chronology of long-term funerary architecture, especially megaliths and burial mounds, now incorporate Bayesian modeling of radiocarbon dates. Indeed, this has become one of the key methods for determining the time intervals of burying the dead, the period of grave use, the rate of placing subsequent individuals, and in the case of barrow necropolises, the chronology and order in which individual mounds and their arrangements were erected (e.g., Aranda Jiménez and Lozano Medina Reference Aranda Jiménez and Lozano Medina2014; Bourgeois and Fontijn Reference Bourgeois and Fontijn2015; Aranda Jiménez et al. Reference Aranda Jiménez, Lozano Medina, Sánchez Romero and Díaz-Zorita Bonilla2018; Makarowicz et al. Reference Makarowicz, Goslar, Niebieszczański, Cwaliński, Kochkin, Romaniszyn, Lysenko and Ważny2018, Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021, Reference Makarowicz, Muzzolf and Romaniszyn2023; Salazar García et al. Reference Salazar-García, García-Puchol, de Miguel-Ibáñez and Talamo2016; Szilágyi et al. Reference Szilágyi, Sümegi, Gulyás and Molnár2018; Steuri et al. Reference Steuri, Siebke, Furtwängler, Sönke, Krause, Lösh and Hafner2019). As such, radiocarbon ages were calibrated against the INTCAL20 curve (Reimer et al. Reference Reimer, Austin, Bard, Bayliss, Blackwell, Bronk Ramsey, Butzin, Cheng, Edwards, Friedrich, Grootes, Guilderson, Hajdas, Heaton, Hogg, Hughen, Kromer, Manning, Muscheler, Palmer, Pearson, van der Plicht, Reimer, Richards, Scott, Southon, Turney, Wacker, Adolphi, Büntgen, Capano, Fahrni, Fogtmann-Schulz, Friedrich, Köhler, Kudsk, Miyake, Olsen, Reinig, Sakamoto, Sookdeo and Talamo2020) and underwent Bayesian analysis performed using OxCal v4.2.3 (Bronk Ramsey Reference Bronk Ramsey1995, Reference Bronk Ramsey2009; Bronk Ramsey and Lee Reference Bronk Ramsey and Lee2013).
The radiocarbon calibration also considered the accumulation of carbon in bones, assuming that the 14C level in the bone collagen of a living organism reflects the average concentration of radiocarbon in the atmosphere over its lifespan. According to Geyh (Reference Geyh2001), this effect could be corrected for by means of a correction term dependent on the age-at-death of the individual. In the present work, we used the age-at-death-dependent correction terms to shift the probability distributions of the calibrated dates, admitting that the magnitude of the shift, unknown exactly, has its own probability distribution. Then, similar to our previous study (Makarowicz et al. Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021), we used one of several normal distributions for each sample, depending on the class of the age-at-death (adultus, maturus, etc., for details see caption to Figure 5). The biological age used for this purpose as well as morphological sex of the deaseased were estimated according to standard methods applied to analyses of inhumed skeletons and cremated remains. Dimorphic morphological features of the skull and pelvis allowed for sex determination (White and Folkens Reference White and Folkens2005). In the case of cremated bones, larger fragments of the frontal and occipital bones with superciliary arches and external occipital protuberance enabled sex identification (Fairgrieve Reference Fairgrieve2008). Age at death was estimated through registration of changes in the symphyseal faces of the pubic symphysis and in the auricular surfaces of the ilium as well as the degree of cranial suture closure and tooth crown attrition (White and Folkens Reference White and Folkens2005).
Figure 5 Bayesian chronological model of radiocarbon dates from the Kordyshiv barrows investigated in this study. Calibrated dates of individuals who died at the age of maturus or older were corrected by the following shifts: Ad (adultus) – N(5,5), Mat (maturus) – N(20,5), AdMat (adultus/maturus) – N(15,5), Ad_Mat (adultus-maturus) – N(15,12), Unk (unknown) – U(0,30); where N(x,y) denotes Gaussian distribution with expected value “x” and dispersion “y”, and U(0,30) is an uniform distribution between 0 and 30 years. The terms Prior indicate probability distributions that were calculated in a separate OxCal project (e.g. “Prior Poz-140906+Ad_Mat” being distribution of calibrated date of Poz-140906, shifted by 15±12 years) and input to the chronological model just to save calculation time.
The calibrated date of the only charcoal sample (from Barrow 1, Table 1) was corrected for the “old wood effect” (Schiffer Reference Schiffer1986; Makarowicz et al. Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021), that, based on the size of charred fragments found, was assumed to be no larger than 30 years (cf. correction “Unk” in Figure 5). A charcoal sample has been taken from a charred wood log (oak)—a structural element of the grave—with a diameter of less than 15 cm (the smallest fragment in the southern part of the grave in Figure 2). As demonstrated by, for example, Zazzo et al. (Reference Zazzo, Saliege, Lebon, Lepetz and Moureau2012) and Snoeck et al. (Reference Snoeck, Brock and Schulting2014), 14C ages of cremated bones may also be altered by the partial replacement of its carbonate carbon with that from the fuel used for cremation. Hence, if the fuel in Barrow 1 was wood no older than 30 years, we can argue that its average 14C signature is roughly the same as that in the bones of humans who died at the age of Adultus_Maturus, making the influence of this replaced carbon negligible.
Stable Carbon and Nitrogen Isotope Analyses
Radiocarbon dating was supplemented by analyzing the stable isotopic composition of nitrogen (δ15N) and carbon (δ13C) in collagen extracted from bones that were 14C dated at the Poznań Radiocarbon Laboratory. These data allowed the dietary patterns of the analyzed individuals to be discussed. Specifically, the analysis of δ13C in human bone collagen enabled the consumption of C3- vs. C4-based foods (i.e., most plants compared to millet) to be distinguished (Lee-Thorp Reference Lee-Thorp2008; van Klinken et al 2000). Considering that δ15N values correspond to the trophic levels that organisms hold in the food chain and depend on the animal protein dietary fraction (Hedges, Reynard Reference Hedges and Reynard2007), these data were also obtained to understand dietary differences across the burials and whether freshwater fish consumption caused a “reservoir effect” to impact the radiocarbon dates (e.g., Cook et al. Reference Cook, Bonsall, Hedges, McSweeney, Boronean and Pettitt2001; Olsen et al. Reference Olsen, Heinemeier, Lübke, Lüth and Terberger2010).
Stable isotope ratios (Table 1) were measured with isotope ratio mass spectrometry (IRMS) at the Goethe University in Frankfurt and at the Institute of Geological Sciences, Polish Academy of Sciences, Warsaw using a Thermo Flash EA 1112HT elemental analyzer connected to a Thermo Delta V Advantage IRMS in a Continuous Flow system. The samples were analyzed against the international standards USGS 40, USGS 41, and IAEA 600 with a calculated analytical uncertainty for δ13C and δ15N of ±0.33‰ and ±0.43‰, respectively.
Results and Discussion
Absolute Chronology
Conventional radiocarbon ages of bones can be affected by the reservoir effect if dated individuals relied on the consumption of aquatic products, a habit that would also be reflected in elevated δ15N values in collagen (e.g., Cook et al. Reference Cook, Bonsall, Hedges, McSweeney, Boronean and Pettitt2001; Olsen et al. Reference Olsen, Heinemeier, Lübke, Lüth and Terberger2010). The question of such an impact on the dates of burials from the 2nd millennium BC in East Central Europe has been more widely discussed by Makarowicz et al. (Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021), who reported δ15N values ranging from 8.0 to 12.0‰ and concluded the absence of the reservoir effect in the reported 14C dates. In the present study, the δ15N values cluster in a narrower interval (mostly between 10.0 and 10.5‰) and do not exceed 11.5‰ (Table 1), meaning that the radiocarbon reservoir effect was similarly absent in the current study.
Bayesian modeling allowed the dates from particular barrows to be grouped into separate phases without assuming any relations between the phases (Figure 5). Archaeologically, the burials in Barrow 2, however, clearly represented two different cultures (CWC and KC), i.e., deceased from two different intervals of time. Furthermore, analysis of the inventories (grave goods) of individual burials within Barrow 3 clearly distinguished two burials (1 and 2) as being earlier than Burials 4, 7, and 9. The Bayesian modeling similarly grouped their 14C dates into two separate phases.
In addition to determining the phase of CWC burials in Barrow 2 and their boundaries, estimations of the time frames of KC burials in individual barrows show (Table 2; Figure 6) that these barrows were in use in slightly different time periods. Durations of use of individual barrows by both cultures (termed as Spans in the Bayesian model, see Table 2) appeared rather uncertain. In most cases (2/CWC, 1/KC, 2/KC) they could be estimated only as shorter than 300 to 400 years, without excluding the possibility that the barrows may have only been used within one year. An exception is Barrow 3, which as a whole was in use over at least 50 years, and most probably, over a period of 100 to 200 years.
Table 2 Time frames of using the barrows presented in this study
Figure 6 Kordyshiv. Older (red), younger (green), and mid (blue) boundaries of use phases for the analyzed barrows.
The obtained 14C determinations and their modeling make it possible to determine the sequence in which the barrows were raised, the order of appearance of graves/burials before and after the formation of the barrow mounds, as well as the time intervals in which these events took place. The absolute chronology model and the analysis of burial goods from the studied barrows in Kordyshiv (Ilchyshyn Reference Ilchyshyn2016) confirm the previously observed structure of cemeteries in the Upper Dniester Basin (Swiesznikow Reference Swiesznikow1967; Sulimirski Reference Sulimirski1968; Machnik et al. Reference Machnik, Pawliw and Petehyrycz2011; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016, Reference Makarowicz, Goslar, Niebieszczański, Cwaliński, Kochkin, Romaniszyn, Lysenko and Ważny2018, Reference Makarowicz, Niebieszczański, Cwaliński, Romaniszyn and Kochkin2019). This was characterized by the construction of the burial mounds by Middle Bronze Age communities (Barrows 1 and 3) next to pre-existing monuments related to the activities of earlier CWC communities. It is difficult to assess the original layout of the burial mounds due to modern damage to the cemetery, but it is possible that they formed—as in the case of other necropolises from this time and place—a linear pattern, which is indicated by the “linear” proximity of the excavated mounds (Figure 1).
In the cemetery in Kordyshiv, we can also observe a rare situation in the Upper Dniester Basin wherein KC communities (after several hundred years) reused the existing mound of Barrow 2 that was originally erected by CWC communities (cf. Sulimirski Reference Sulimirski1968; Makarowicz et al. Reference Makarowicz, Kochkin, Niebieszczański, Romaniszyn, Cwaliński, Staniuk, Lepionka, Hildebrandt–Radke, Panakhyd, Boltryk, Rud, Wawrusiewicz, Tkachuk, Skrzyniecki and Bahyrycz2016). By the end of the 3rd millennium BC, the mound of this monument was formed over individual Burials 1, 2, 7, and 8 (Figure 3). The central (primary burial) was Burial 7, a male aged 20 to 25 years-at-death who was equipped with a stone axe. After his burial, a mound was erected, and several generations later another three individuals (Burials 1, 2, and 8), all males aged 40 to 50 years-at-death, were buried simultaneously (as secondary burials), as indicated by the calibration intervals of the assays obtained for Burials 1 and 2. They were buried in graves dug in the southern and northern sectors of the mound (the outlines of the grave pits were illegible). Burials of individuals representing the Middle Bronze Age KC were also recorded in Barrow 2. Their graves were dug close together in the existing barrow, several hundred years after the mound was erected by CWC communities. The obtained calibration intervals do not specify whether this occurred as part of a sequence of events (consecutive funerals) or simultaneously (joint funeral). The funeral ritual of the KC community allows for both possibilities (Makarowicz et al. Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021).
In turn, the modeling of 14C dates from Barrow 3 allowed a scenario of the sequential assembly of the dead in two or three phases to be proposed (Figure 4). The oldest was represented by Burial 1 (primary) of two individuals, followed by the interim Burial 2 (collective—six people), which can also be treated as belonging to the next phase of barrow use. Secondary double Burials 4, 7, and 9 are associated with the youngest use phase. There is a hiatus of at least several decades between each of these three phases. In this case, archaeological evidence confirms that the younger burials were interred within the mound of the existing barrow. It can be assumed that the time between the use phases of this barrow was not long enough for the mourners to be ignorant of the identities of those buried in the original burials. Modeling of radiocarbon dates obtained for six collectively buried individuals, supported by the observation of a specific (antipodal, jack-like) arrangement of the deceased and the distribution of grave goods specific for the TCC (and KC) funeral ritual, suggests their simultaneous burial, with possible death at different times (Makarowicz Reference Makarowicz2010; Makarowicz et al. Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021). It is also possible that the individuals were buried in a sequence, one after the other over a short time span, which is also consistent with the KC community’s rituals (Makarowicz Reference Makarowicz2008, Reference Makarowicz2019; Romaniszyn Reference Romaniszyn2015).
The collective burial from Barrow 1 was by far the youngest (Figure 2). Four individuals representing the KC were cremated in situ in a grave within a wooden structure. For two of them (Individuals 3 and 4), the ranges of the modeled dates were determined to coincide (ca. 1400–1200 BC; Figure 3) and only differed slightly from that of the charcoal. However, despite its very low probability, we cannot entirely exclude that the wood used in this barrow was distinctly older than we assumed (i.e., >30 years). If so, Barrow 1 would still be younger than the age determined by our model.
Anthropological Remarks
In terms of the distribution of individuals of both sexes in the graves from Barrow 2 in Kordyshiv, only single male burials were discovered. The dominance of male burials is typical for the Corded Ware and epi-Corded Ware cultures (Bourgeois and Kroon Reference Bourgeois and Kroon2017; Włodarczak Reference Włodarczak2017; Jarosz Reference Jarosz2021; Jarosz et al. Reference Jarosz, Mazurek and Szczepanek2022). In the studied barrows of the Komarów culture, single, double, and mass inhumations or cremation burials were found. The age and sex of individuals from these contexts are variable but the prevalence of females is clearly visible. Such a distribution indicates family burials, which are distinctive for prehistoric communities due to the increased rates of female and child mortality (Hewlett 1991). Males were discovered only in double burials with females and nearly all children of different ages were found in one mass grave (Barrow 3, Burial 2) with an adult female (Table 1).
Diet
The obtained δ13C and δ15N values are diverse, and so to be better interpret the diet of the Kordyshiv individuals, they were compared to data from individuals representing the CWC and TCC circle from southeastern Poland and western Ukraine as well as contemporaneous animals and plants samples from these areas (Figure 7). All individuals from epi-CWC contexts exhibit similar values indicating a terrestrial diet based on C3 plants supplemented with animal protein. Comparison with CWC samples from other cemeteries reveals slightly lower δ15N values of the burials from Kordyshiv. Results acquired from other KC individuals demonstrate a much wider range of δ13C values (Figure 7). This is a consequence of a diet based on C3 or C4 plants as well as a mixed C3/C4 diet. Changes are clearly visible over time (Figure 8) with the introduction of millet, the only C4 plant consumed in large quantities in this region at this time, in the second half of the 15th century BC (Pospieszny et al. Reference Pospieszny, Makarowicz, Lewis, Górski, Taras, Włodarczak, Szczepanek, Ilchyshyn, Jagodinska, Czebreszuk, Muzolf, Nowak, Polańska, Juras, Chyleński, Wójcik, Lasota-Kuś, Romaniszyn, Tunia, Przybyła, Grygiel, Matoga, Makowiecki and Goslar2021). Variability is also visible in δ15N values of KC individuals. Some could be a consequence of breastfeeding (Barrow 3, Burial 2, Individual 4) or early weaning (Barrow 3, Burial 2, Individual 6), as the consumption of breastmilk causes elevated δ15N values (Fuller et al. Reference Fuller, Fuller, Harris and Hedges2006). The δ15N values of adult females are the most diverse with the highest value of 11.3‰ for Burial 7/Individual S from Barrow 3 and lowest value of 7.8‰ for both females buried in Burial 1 from the same barrow (Table 1).
Figure 7 Kordyshiv. δ13C and δ15N values in collagen samples from human bones compared to those of other cultures (after Pospieszny et al. Reference Pospieszny, Makarowicz, Lewis, Górski, Taras, Włodarczak, Szczepanek, Ilchyshyn, Jagodinska, Czebreszuk, Muzolf, Nowak, Polańska, Juras, Chyleński, Wójcik, Lasota-Kuś, Romaniszyn, Tunia, Przybyła, Grygiel, Matoga, Makowiecki and Goslar2021; Szczepanek and Jarosz Reference Szczepanek and Jarosz2022), as well as the values of archaeological animal and plant samples (after Mueller-Bieniek et al. Reference Mueller-Bieniek, Nowak, Styring, Lityńska-Zając, Moskal-del Hoyo, Sojka, Paszko, Tunia and Bogaard2019; Szczepanek and Jarosz Reference Szczepanek and Jarosz2022).
Figure 8 Kordyshiv. δ13C values in collagen samples from human bones against their mean calibrated absolute ages (data from Pospieszny et al. Reference Pospieszny, Makarowicz, Lewis, Górski, Taras, Włodarczak, Szczepanek, Ilchyshyn, Jagodinska, Czebreszuk, Muzolf, Nowak, Polańska, Juras, Chyleński, Wójcik, Lasota-Kuś, Romaniszyn, Tunia, Przybyła, Grygiel, Matoga, Makowiecki and Goslar2021; Szczepanek, Jarosz Reference Szczepanek and Jarosz2022).
Conclusions
Bayesian modeling of the 14C dates of three burial mounds in Kordyshiv revealed the extremely important role of these monuments as long-term objects used for ritual purposes. This is consistent with the current state of knowledge regarding the chronology of the structure of barrow cemeteries from the Late Eneolithic and Middle Bronze Ages in the Upper Dniester Basin. At the end of the 3rd millennium BC, the CWC community erected a mound over the primary (central) burial in Barrow 2 (no. 7), then interred the graves of three additional deceased (secondary burials) to the south and northwest of the central burial within this mound. Barrow 2 was reused again after several hundred (500–700) years, whereby KC individuals from the Middle Bronze Age were interred within it in the second half of the 2nd millennium BC. The oldest Middle Bronze Age monument, built to the southeast of pre-existing Barrow 2 built by the Late Eneolithic CWC community, was Barrow 3, in which the deceased were buried in a two-stage sequence before and after the mid-2nd millennium BC.
The youngest dated grave in Kordyshiv was Burial 1 in Barrow 1, comprising a collective burial that most probably was interred between 1400 and 1200 BC, or even afterwards. Significantly, this is the latest burial of the KC known to date, and its 14C dates suggest the possibility of revising (“delaying”) the chronology of the final stage of development of this cultural group (cf. Makarowicz et al. Reference Makarowicz, Niebieszczański, Cwaliński, Romaniszyn and Kochkin2019, Reference Makarowicz, Goslar, Górski, Taras, Szczepanek, Pospieszny, Jagodinska, Ilchyshyn, Włodarczak, Juras, Chyleński, Muzolf, Lasota-Kuś, Wójcki, Matoga, Nowak, Przybyła, Marcinkowska-Swojak, Figlerowicz, Grygiel, Czebreszuk and Kochkin2021).
The additional analyses of carbon and nitrogen isotopes confirm the tendencies and regularities known from the literature, showing significant differences in the diet of epi-CWC individuals buried in Barrow 2 from the individuals representing the KC. The former is typical of the CWC community and consisted of food obtained from plants that use the C3 photosynthetic pathway and meat from terrestrial animals. In the case of the KC burials, we have confirmed previous findings that representatives of this community transitioned—likely over several generations—from a diet based on C3 vegetation, through a mixed C3/C4 diet, to the consumption of foods obtained from C4 plants—millet (Pospieszny et al. Reference Pospieszny, Makarowicz, Lewis, Górski, Taras, Włodarczak, Szczepanek, Ilchyshyn, Jagodinska, Czebreszuk, Muzolf, Nowak, Polańska, Juras, Chyleński, Wójcik, Lasota-Kuś, Romaniszyn, Tunia, Przybyła, Grygiel, Matoga, Makowiecki and Goslar2021).
A final important question involves the relationship between individuals interred in collective graves, particularly the children buried with the female in the collective grave as well as individuals interred as pairs and sequentially. In light of the current knowledge about mass burials in the TCC region, we know that related individuals have been found buried in one grave and between adjacent graves (Chyleński et al. Reference Chyleński, Makarowicz, Juras, Krzewińska, Pospieszny, Ehler, Górski, Taras, Szczepanek, Polańska, Włodarczak, Lasota-Kuś, Wójcik, Romaniszyn, Szmyt, Kośko, Ignaczak, Sadowski, Matoga, Grossman, Ilchyshyn, Yahodinska, Romańska, Tunia, Przybyła, Szostek, Dabert, Götherström, Jakobsson and Malmström2023). Future aDNA research will provide an answer to the question about the possible kinship of individuals buried in the Kordyshiv barrows, and especially those who were buried in collective graves.
Acknowledgments
This research was supported by the Polish National Science Centre grant No. 2023/49/B/HS3/00825 lead by P.M. We would like to thank Asta Rand, PhD, for linguistic corrections and her valuable comments on the original manuscript.
Competing Interests
The authors have no competing interests to declare
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