FERNS

Informal group: Land plants

Age range: Devonian-Recent

Found in OK: Pennsylvanian rocks, eastern Oklahoma

Found all over the world today, ferns are a very successful group of plants that grow as trees and vines as well as the usual "weedy" forms. Ferns, especially tree ferns, were very common in Pennsylvanian cal swamps and also are very common as fossils.

Geologic Time
Time Scale
Cretaceous
Pennsylvanian
Mississippian
Devonian
Silurian
Ordovician

Fossil Images
Common Cretaceous Fossils
Common Pennsylvanian Fossils
Common Mississippian Fossils
Common Devonian Fossils
Common Silurian Fossils
Common Ordovician Fossils