List of fossiliferous stratigraphic units in Maryland

Group or Formation Period Notes
Allegheny Formation Carboniferous
Antietam Formation Cambrian
Aquia Formation Paleogene
Brightseat Formation Paleogene
Calvert Formation Neogene
Chatham Group/Gettysburg Formation Triassic
Chemung Formation Devonian
Chesapeake Group/Calvert Formation Neogene
Chesapeake/Choptank Formation Neogene
Chesapeake/St. Marys Formation Neogene
Clinton Group/Keefer Sandstone Silurian
Clinton/Rochester Shale Silurian
Clinton/Rose Hill Formation Silurian
Conemaugh Group Carboniferous
Dunkard Group/Greene Formation Permian
Foreknobs Formation Devonian
Greenland Gap Group/Foreknobs Formation Devonian
Jennings Formation Devonian
Aquia Formation Paleogene
Magothy Formation Cretaceous
Marcellus Formation Devonian
Matawan Formation Cretaceous
McKenzie Formation Silurian
Merchantville Formation Cretaceous
Mifflintown Formation Silurian
Monmouth Formation Cretaceous
Nanjemoy Formation Paleogene
Onondaga Formation Devonian
Pamlico Formation
Pamunkey Group/Aquia Formation Paleogene
Pamunkey/Brightseat Formation Paleogene
Pamunkey/Nanjemoy Formation Paleogene
Arundel Clay Cretaceous
Patapsco Formation Cretaceous
Patuxent Formation Cretaceous
Rockdale Run Formation Ordovician
Romney Formation Devonian
Severn Formation Cretaceous
St. Marys Formation Neogene
Stonehenge Limestone Ordovician
Talbot Formation
Tonoloway Limestone Silurian
Williamsport Sandstone Silurian
Wills Creek Limestone Silurian

See also

References

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