{{Infobox rockunit | name = Iwaki Formation | period = Eocene | age = Eocene–early Oligocene | image = | imagesize = | caption = | type = Geological formation | prilithology = | otherlithology = | unitof =Shiramizu Group | subunits = | underlies = | overlies =Unconformity with the Tamayama Formation | thickness = | area = | map = | map_caption = <!----Location----> | location = Iwaki, Fukushima | coordinates = {{Coord|37|06|54.2|N|140|50|26.6|E|display=title, inline}} | region = | country = Japan | extent = <!--Type section---> | namedfor = <!--Usually a nearby town--> | namedby = <!--Author of defining paper--> | year_ts = <!--Year of definition--> | location_ts = <!--Place,mountain,...--> | coordinates_ts = <!--Geographic coordinates--> | paleocoordinates_ts = <!--Paleocoordinates--> | region_ts = <!--Region of type section--> | country_ts = <!--Country of type section--> | thickness_ts = <!--Thickness at type section--> }} {{short description|Geologic formation in Japan}} {{Use dmy dates|date=November 2019}} The '''Iwaki Formation''' is a palaeontological formation located in Iwaki, Fukushima, Japan. It dates to Eocene and early Oligocene periods. The formation contains three families of Artiodactyla–Anthracotheriidae, Entelodontidae, and Hypertragulidae.<ref>{{cite journal|title=Paleogene mammals from the Iwaki Formation in Japan: Their implications for the geologic age and paleobiogeography of this formation|doi=10.1016/j.jseaes.2015.03.049|work=Journal of Asian Earth Sciences|date=15 August 2015}}</ref>
==Paleofauna== *Anthracotheriidae indet. *Entelodontidae indet. *Hypertragulidae indet.
==See also== * List of fossil sites
==Further reading== * {{aut|Vickers-Rich, Patricia & Rich, Thomas Hewett}} (1993); ''Wildlife of Gondwana''. Reed. {{ISBN|0-7301-0315-3}}
==References== {{reflist}}
Category:Geologic formations of Japan Category:Paleogene System of Asia Category:Paleogene Japan Category:Oligocene Series Category:Oligocene paleontological sites Category:Paleontology in Japan
{{Japan-geologic-formation-stub}}