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Rock Formations

Measure

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Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Helderberg Group (WVDhl;0)

Geologic Formation in WV, MD, VA

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Lithology

Geologic Age

Devonian (422.4 Ma – 359.3 Ma ago)

Geologic Unit Label

Dhl

Mostly cherty limestone, with some sandstone and shale. Contains several named stratigraphic units, including the Keyser Formation, which is partly Silurian and includes the Clifton Forge Sandstone and Big Mountain Shale Members.

— USGS

Colubrid Snake Fossil Colubridae (family)

13 Observations

Salamander Fossil Caudata (order), “The Salamanders”

12 Observations

Squirrel Fossil Sciuridae (family), “Squirrel Family”

11 Observations

Cricetidae FAMILY

Frog Fossil Anura (order), “Frog Order”

Taxonomy

Geographic Places

Geological Feature

Geologic Formation

Classified As

Geologic Formation

Helderberg Group (WVDhl;0)

Helderberg Group (WVDhl;0)

Helderberg Group (WVDhl;0)