The Langara Formation is a geologic formation in Norway. It preserves fossils dating back to the Katian to Hirnantian (Rawtheyan) stages of the Ordovician period.
| Langara Formation | |
|---|---|
| Stratigraphic range: Katian-Hirnantian (Rawtheyan) ~ | |
 Langara Formation | |
| Type | Formation |
| Lithology | |
| Primary | Limestone |
| Other | Siltstone, shale |
| Location | |
| Region | Baerum, Oslo Asker |
| Country |  Norway |
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