| 词条 | Naknek Formation |
| 释义 |
| name = Naknek Formation | image = | caption = | type = Geological formation | age = | prilithology = | otherlithology = | namedfor = | namedby = | region = | country = | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Naknek Formation is a Mesozoic geologic formation. Plesiosaur remains are among the fossils that have been recovered from its strata. |