| 词条 | El Rayo Formation |
| 释义 |
| name = El Rayo Formation | image = | caption = | type = Formation | age = Cretaceous | prilithology = | otherlithology = | namedfor = | namedby = | region = | country = Puerto Rico | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The El Rayo Formation is a geologic formation in Puerto Rico. It preserves fossils dating back to the Cretaceous period. See also
References
1 : Cretaceous Puerto Rico |
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