{{Infobox rockunit | name = Simpson Group | image = | caption = | type = Group | age = Ordovician | prilithology = | otherlithology = | namedfor = | namedby = | region = Oklahoma | country = United States | coordinates = | unitof = | subunits = Bromide Formation | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }}

The '''Simpson Group''' is a geologic group in Oklahoma. It preserves fossils dating back to the Ordovician period.

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

==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|df= }}

Category:Geologic groups of Oklahoma Category:Ordovician System of North America

{{Oklahoma-geologic-formation-stub}} {{Ordovician-stub}}