TABLE 1. Details of the Ochotona samples analysed in this study. Asterisks indicate the specimens donated by A. Lissovsky (*) and N. Abramson (**). The absolute age of the specimens in years: 20,000 (1), 150 (2), 550 (3), 36 (4), 17,000 (5), 9915 ± 60 BP (OxA8073) after Ramsey et al. (2002) and Price (2003) (6).
| No. | Taxon (initial ID) | Country | Locality | Age | Reference |
| 1* | Ochotona pusilla | Kazakhstan | - | Recent | This paper |
| 2* | Ochotona pusilla | Russia | - | Recent | This paper |
| 3** | Ochotona pusilla | Russia | - | Recent | This paper |
| 4** | Ochotona pusilla | Russia | - | Recent | This paper |
| 5 | Ochotona spelaea | Ukraine | Novgorod-Siverskyi 1 | Last Glacial | Rekovets, 1985 |
| 6 | Ochotona pusilla | Ukraine | Kozatske2 | Late Holocene | Pidoplichka, 1934 |
| 7 | Ochotona pusilla | Ukraine | Raiky3 | Late Holocene | Pidoplichka, 1934 |
| 8 | Ochotona pusilla | Russia | Orenburg4 | Recent | This paper |
| 9 | Ochotona pusilla | Ukraine | Mezhyrich5 | Last Glacial | Rekovets, 1985 |
| 10 | Ochotona pusilla | Ukraine | Mezhyrich5 | Last Glacial | Rekovets, 1985 |
| 11 | Ochotona sp. | Belgium | Rocher de Nevioux | Last Glacial | This paper |
| 12 | Ochotona sp. | Belgium | Rocher de Nevioux | Last Glacial | This paper |
| 13 | Ochotona sp. | Belgium | Rocher de Nevioux | Last Glacial | This paper |
| 14 | Ochotona sp. | Belgium | Rocher de Nevioux | Last Glacial | This paper |
| 15 | Ochotona sp. | Belgium | Rocher de Nevioux | Last Glacial | This paper |
| 16 | Ochotona sp. | England | Bridget Pot | Younger Dryas | This paper |
| 17 | Ochotona sp. | England | Bridget Pot | Younger Dryas | This paper |
| 18 | Ochotona sp. | England | Bridget Pot | Younger Dryas | This paper |
| 19 | Ochotona sp. | England | Bridget Pot | Younger Dryas | This paper |
| 20 | Ochotona sp. | England | Bridget Pot | Younger Dryas | This paper |
| 21 | Ochotona sp. | England | Merlin’s Cave6 | Younger Dryas | This paper |
| 22 | Ochotona sp. | England | Merlin’s Cave6 | Younger Dryas | This paper |
| 23 | Ochotona sp. | England | Merlin’s Cave6 | Younger Dryas | This paper |
| 24 | Ochotona sp. | England | Merlin’s Cave6 | Younger Dryas | This paper |
TABLE 2. The list of specimens from GenBank used to compare the obtained results.
| Species | GenBank | Species | GenBank |
| Ochotona alpina | AF273009 | Ochotona princeps | EU590921 |
| Ochotona alpina | DQ335517 | Ochotona princeps | EU590922 |
| Ochotona alpina | EF567055 | Ochotona pusilla | AY260744 |
| Ochotona alpina | HM346527 | Ochotona pusilla | HM366945 |
| Ochotona alpina | HM346529 | Ochotona pusilla | JX682567 |
| Ochotona collaris | EU549738 | Ochotona pusilla | JX682568 |
| Ochotona collaris | JQ624503 | Ochotona roylei | JX682573 |
| Ochotona collaris | JQ624508 | Ochotona rutila | JX682566 |
| Ochotona collaris | KP411020 | Ochotona thibetana | AF272986 |
| Ochotona erythrotis | AF272999 | Ochotona thibetana | KU359597 |
| Ochotona forresti | AF272998 | Ochotona thibetana | KU359598 |
| Ochotona huangensis | JN645147 | Ochotona thibetana | KU359599 |
| Ochotona hyperborea | AB053257 | Ochotona thibetana | KU359600 |
| Ochotona hyperborea | KR076818 | Ochotona thomasi | AF272987 |
| Ochotona hyperborea | KR076820 | Ochotona thomasi | KU359612 |
| Ochotona hyperborea | KR076821 | Ochotona thomasi | KU359613 |
| Ochotona hyperborea | KR076823 | Ochotona thomasi | KU359614 |
| Ochotona koslowi | AF272993 | Ochotona thomasi | KU359615 |
| Ochotona macrotis | AF273010 | *Sequences added to root the tree: | |
| Ochotona macrotis | JQ670914 | *Microtus pennsylvanicus | KC473477 |
| Ochotona macrotis | JX682574 | *Peromyscus boylii | AF155387 |
TABLE 3. Primer pairs used to amplify the ancient mtDNA control-region sequence of the cytochrome b.
| Primer name | Primer sequences (5′-3′) | Size (bp) | Ta*, °C |
| Och1f | AAACCACCCCCTAATAAAAA | 143 | 50 |
| Och1r | GTATGGCTAGGAATAAGCC | ||
| Och2f | CCGCATGATGAAACTTCGGA | 121 | 50 |
| Och2r | TGGGTGACTGATGAGAATGC | ||
| Och3f | TCCTAGCCATACACTACACA | 121 | 50 |
| Och3r | AATATGGATGCGCCGTT | ||
| Och4bf | TAAACTACGGCTGAATTATCC | 129 | 52 |
| Och4br | CCGATGTTTCATGTTTCTGAG | ||
| Och5f | CTATTCCTACACGTAGGCCG | 141 | 50 |
| Och5r | GAAGGATATTTGTCCTCATGG | ||
| Och6bf | TAGCAACCGCCTTCATAGG | 131 | 52 |
| Och6br | AGCCGCCTCAGATTCATTG | ||
| Och7bf | CCATGAGGACAAATATCCTTC | 127 | 52 |
| Och7br | GTGAGGGTAGCTTTATCAACTG | ||
| Recent specimen (ER008) | |||
| Och1f | AAACCACCCCCTAATAAAAA | 143 | 50 |
| Och1r | GTATGGCTAGGAATAAGCC | ||
| Och2f | CCGCATGATGAAACTTCGGA | 121 | 50 |
| Och2r | TGGGTGACTGATGAGAATGC | ||
| Och3f | TCCTAGCCATACACTACACA | 121 | 50 |
| Och3r | AATATGGATGCGCCGTT | ||
| Och4f | ACGGCTGAATTATCCGCTAC | 115 | 50 |
| Och4r | CATGTTTCTGAGTAGGTGTA | ||
| Och5f | CTATTCCTACACGTAGGCCG | 141 | 50 |
| Och5r | GAAGGATATTTGTCCTCATGG | ||
| Och6f | CCGCCTTCATAGGCTAC | 121 | 50 |
| Och6r | CCTCAGATTCATTGGAC | ||
| Och7f | AACCGTAATTACCAACCTCC | 113 | 50 |
| Och7r | AGGCAAAGAATCGAGTTAGG | ||
* Annealing temperature
