Seal canines from several Neolithic and Early Bronze Age archaeological sites on Lake Baikal are analysed in the context of a modern reference collection and comprehensive information about modern Baikal seal ecology and behaviour. Our analysis, which includes determination of seasonality and age at death, reveals temporal and spatial patterns of procurement. While it probably played a secondary role in the livelihood of the three foraging cultures in the area, the Baikal seal was apparently an important part of one community's mortuary programme. We also found that observed changes in the use of seal across the Neolithic corroborate well with the discontinuity in human occupation that has been hypothesized on the basis of radiocarbon, artefactual and osteological evidence.