| 词条 | Aleman Formation |
| 释义 |
| name = Aleman Formation | image = | caption = | type = Formation | age = Ordovician | prilithology = | otherlithology = | namedfor = | namedby = | region = Texas | country = United States | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Aleman Formation is a geologic formation in Texas. It preserves fossils dating back to the Ordovician period. See also{{Portal|Earth sciences|Texas|Paleontology|Ordovician|Paleozoic}}
References
3 : Ordovician geology of Texas|Ordovician geology of New Mexico|Ordovician southern paleotropical deposits |
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