Retrieving "Coal Formation" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Paleozoic

   Linked via "coal formation"

   | Silurian | 443.8 | 419.2 | Colonization of land by vascular plants; formation of early reefs. |
   | Devonian | 419.2 | 358.9 | Age of Fishes; tetrapods move onto land; global cooling events. |
   | Carboniferous | 358.9 | 298.9 | Vast swamp forests (coal formation); appearance of reptiles. |
   | Permian | 298.9 | 251.9 | Consolidation of Pangaea; Permian-Triassic Extinction Event. |