File talk:Geological time spiral.png

Fantastic! Congratulations for this masterpiece. Could someone possibly create a German version of this graphic? :)

Greets, Horst-schlaemma (talk) 07:30, 3 June 2009 (UTC)

Nice work, but WHY Carbon is shown as Mississippian and Pennsylvanyan "periods" (which are NOT periods)? :-/ 37.55.222.98 01:30, 5 July 2014 (UTC)

It's somewhat historical and specific to North American geology, but some still consider them is as periods. See Mississippian and Pennsylvanian. More at w:Period (geology)#Continuity issues. Mwtoews (留言) 01:10, 15 July 2014 (UTC)