biostudies-literatureUnknown41Pospieszny LNational Science Centre PolandThis dataset is comprised of paired radiocarbon (¹⁴C) dates, and carbon (<i>δ</i> ¹³C) and nitrogen (<i>δ</i> ¹⁵N) stable isotope ratios received for skeletal remains of 18 humans and 6 animals. These remains were archaeologically-derived from a Late Neolithic passage grave in Kierzkowo, located in today's north-central Poland. All human individuals were sexed and aged by physical anthropologists; animal skeletal remains were identified by zooarchaeologists. Collagen samples were extracted from bones, radiocarbon dated by accelerator mass spectrometry (AMS) and stable carbon and nitrogen isotope compositions measured by isotope ratio mass spectrometry (IRMS). The samples were collected and analysed to establish the absolute chronology of the tomb, estimate Data in brief108011https://www.ebi.ac.uk/biostudies/studies/S-EPMC8918827biostudies-literatureRadiocarbon dates and stable isotope data for human and animal skeletal remains from a passage grave in Kierzkowo, Poland (Late Neolithic and modern period).PMC8918827Pospieszny LNowaczyk SfalseRadiocarbon dates and stable isotope data for human and animal skeletal remains from a passage grave in Kierzkowo, Poland (Late Neolithic and modern period).This dataset is comprised of paired radiocarbon (¹⁴C) dates, and carbon (<i>δ</i> ¹³C) and nitrogen (<i>δ</i> ¹⁵N) stable isotope ratios received for skeletal remains of 18 humans and 6 animals. These remains were archaeologically-derived from a Late Neolithic passage grave in Kierzkowo, located in today's north-central Poland. All human individuals were sexed and aged by physical anthropologists; animal skeletal remains were identified by zooarchaeologists. Collagen samples were extracted from bones, radiocarbon dated by accelerator mass spectrometry (AMS) and stable carbon and nitrogen isotope compositions measured by isotope ratio mass spectrometry (IRMS). The samples were collected and analysed to establish the absolute chronology of the tomb, estimate 2022-01-01T00:00:00Z2022 Apr2025-04-04T19:30:02.649Z2025-04-04T19:30:02.649ZS-EPMC89188273529587110.1016/j.dib.2022.108011