URI(s)
- http://id.loc.gov/authorities/subjects/sh85054103
- http://id.loc.gov/authorities/sh85054103#concept
Components
- Ordovician
Variants
- Ordovician Period
Broader Terms
Narrower Terms
- Camp Nelson Limestone (Ky.)
- Capitol Metabentonite (Ky.)
- Cason Shale (Ark.)
- Cow Head Group (N.L.)
- El Paso Formation
- Ellenburger Group (Tex.)
- Glenogle Formation (B.C.)
- Hunton Group
- Knox Group
- Maquoketa Group
- Medina Group
- Mellsenn Group (Norway)
- Montoya Group
- Natal Group (South Africa)
- Pacoota Sandstone (N.T.)
- Piekenierskloof Formation (South Africa)
- Road River Formation
- Robert's Arm Group (N.L.)
- Saint Peter Sandstone
- Shallow Bay Formation (N.L.)
- Simpson Group
- Table Mountain Group (South Africa)
- Trenton Group
- Trenton Limestone
- Tumblagooda Sandstone (W.A.)
- Viola Group (Okla.)
- Whittaker Formation (N.W.T.)
Closely Matching Concepts from Other Schemes
Broader Concepts from Other Schemes
LC Classification
- QE660
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
- 1986-02-11: new
- 1988-05-17: revised
Alternate Formats
