URI(s)
- http://id.loc.gov/authorities/subjects/sh95010914
- http://id.loc.gov/authorities/sh95010914#concept
Components
- Ordovician
Variants
- Ordovician Period
Broader Terms
Closely Matching Concepts from Other Schemes
Broader Concepts from Other Schemes
Sources
- found: Work cat.: Bretsky, P.W. Upper Ordovician ecology of the central Appalachians, 1970.
- found: Westrop, S.R. Systematics and paleoecology of Upper Ordovician trilobites ... 1983.
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
- 1995-12-27: new
- 1996-02-15: revised
Alternate Formats
