Chalk Hills Formation

{{Short description|Geologic formation in Idaho, United States}} {{Infobox rockunit | name = Chalk Hills Formation | image = | caption = | type = Formation | age = Neogene | prilithology = | otherlithology = | namedfor = | namedby = | region = Idaho | country = United States | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }}

The '''Chalk Hills Formation''' is a geologic formation in Idaho. It preserves fossils dating back to the Neogene period. It was deposited by Lake Idaho.<ref name=":0">{{Cite journal |last=Wood |first=Spencer H. |last2=Clemens |first2=Drew M. |date=July 1998 |title=Geologic and Tectonic History of the Western Snake River Plain, Idaho and Oregon |url=https://idwr.idaho.gov/wp-content/uploads/sites/2/projects/north-ada-county/199807-WOODCLEM-2002.pdf |journal=Idaho Geological Society Bulletin |volume=30 |pages=69-103}}</ref>

==See also== {{Portal|Earth sciences|Paleontology}} * List of fossiliferous stratigraphic units in Idaho * Paleontology in Idaho

==References== * {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}} {{Reflist}} Category:Neogene Idaho Category:Geologic formations of Idaho