Data for: Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene

Despite numerous studies on the rise and fall of terrestrial megafauna in the Late Quaternary, knowledge about marine megafauna from this period remains limited. In this study, we performed radiocarbon dating and partial mitochondrial DNA sequencing from the skeletal remains of three species of small odontocetes (Pacific white-sided dolphins, Dall’s porpoises, and harbour porpoises) excavated from prehistoric archaeological sites around the Japanese shore dating back to 8500 – 1000 years ago (ya). Pacific white-sided dolphins that habituated the eastern coast of Hokkaido around 2000 ya belonged to different maternal groups than those from over 5000 ya and today. Furthermore, the species composition excavated from eastern Hokkaido sites varies between 5000 and 2000 ya. These findings suggest two significant population turnovers of small odontocetes on the east coast of Hokkaido, a transitional zone between the coastal area of East Asia and the offshore North Pacific. Notably, the first t..., , , # Data for: Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene

[https://doi.org/10.5061/dryad.j9kd51cnm](https://doi.org/10.5061/dryad.j9kd51cnm)

## Description of the data and file structure

Files are stored in BaySICS (Sandoval-Castellanos et al. 2014) input file (.dat) format

**dataS1.dat**          (an input file for Scenario 1)

A01 – A34: contemporary Hokkaido individuals sequenced in this study

A35 – A38: Higashi-Kushiro individuals

B01 – B24: contemporary offshore individuals reported by Hayano et al. (2004)

C01 – C12: Nusamai individuals

**dataS2.dat**          (an input file for Scenario 2)

A01 – A34: contemporary Hokkaido individuals sequenced in this study

A35 – A38: Higashi-Kushiro individuals

B01 – B12: Nusamai individuals

C01 – C24: contemporary offshore individuals reported by Hayano et al. (2004)

**common parameters**

Mutation rate of the mtDNA D-loop region: 0.32 [/site/million years] (Sigurðardót...