geologic timescale, the Mississippian is subdivided into three stages: Serpukhovian (330.9 to 323.2 mya) Visean (346.7 to 330.9 mya) Tournaisian (358.9 to... 7 KB (502 words) - 21:36, 19 December 2023 |
330.9 Ma. It follows the Tournaisian age/stage and is followed by the Serpukhovian age/stage. The Viséan Stage was introduced by Belgian geologist André... 10 KB (858 words) - 13:57, 24 April 2024 |
Pennsylvanian and is divided in three ages: Namurian (corresponding to Serpukhovian and early Bashkirian) Westphalian (corresponding to late Bashkirian,... 13 KB (1,145 words) - 16:23, 11 April 2024 |
approximately 10 million years older than Echinochimaera (from the late Serpukhovian of Montana), and far older than the Mesozoic radiation which would lead... 3 KB (216 words) - 17:31, 12 November 2023 |