| Peterson (2011) [117] | Pointon et al. (2012) [118] | Davydov et al. (2012) [21] | Jirásek et al. (2018) [116] | Cohen et al. (2018) [119] | Menning (2018) [120] |
Top Namurian |
| 319.9 | 318.5 | - | - | - |
Top Serp./Miss. | 324.42 | 323.9 | 323.2 | 323.2 | 323.2 | 320 |
Base Namurian |
| - | 329.2 | 330.9 | - |
|
Base Serpukhovian | 331.96 | - | 330.0 | 330.9 | 330.9 | 326.5 |