| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Asselian |  |  |  |  |
| 3 | System/ Period | Series/ Epoch | Stage/ Age | Age (Ma) | Age (Ma) |
| 4 | Triassic | Lower/ Early | Induan | younger | younger |
| 5 | Permian | Lopingian | Changhsingian | 251.902 | 254.14 |
| 6 | Permian | Lopingian | Wuchiapingian | 254.14 | 259.1 |
| 7 | Permian | Guadalupian | Capitanian | 259.1 | 265.1 |
| 8 | Permian | Guadalupian | Wordian | 265.1 | 268.8 |
| 9 | Permian | Guadalupian | Roadian | 268.8 | 272.95 |
| 10 | Permian | Cisuralian | Kungurian | 272.95 | 283.5 |
| 11 | Permian | Cisuralian | Artinskian | 283.5 | 290.1 |
| 12 | Permian | Cisuralian | Sakmarian | 290.1 | 295.0 |
| 13 | Permian | Cisuralian | Asselian | 295.0 | 298.9 |
| 14 | Carboniferous | Pennsylvanian | Gzhelian | older | older |
| 15 | Subdivision of the Permian system according to the ICS, as of 2017. | Subdivision of the Permian system according to the ICS, as of 2017. | Subdivision of the Permian system according to the ICS, as of 2017. | Subdivision of the Permian system according to the ICS, as of 2017. | Subdivision of the Permian system according to the ICS, as of 2017. |

Question: What series and system have the base at the same time as that of the Asselian stage?
Answer: The base of the Asselian stage is at the same time the base of the Cisuralian series and the Permian system.