Blackberry Hill

Blackberry Hill
Stratigraphic range: Mid Cambrian–Late Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Tidal flat at Blackberry Hill, showing its animals and their traces.
Type	Konservat-Lagerstätte
Unit of	Elk Mound Group
Sub-units	Mount Simon Formation Wonewoc Formation
Lithology
Primary	Sandstone and orthoquartzite
Location
Coordinates	44°42′39.24″N 89°30′43.40″W / 44.7109000°N 89.5120556°W / 44.7109000; -89.5120556
Region	Wisconsin
Country	United States
Type section
Named for	Topographic feature (a summit) in Marathon County

Blackberry Hill is a Konservat-Lagerstätte of Cambrian age located within the Elk Mound Group in Marathon County, Wisconsin.^[1] It is found in a series of quarries and outcrops that are notable for their large concentration of exceptionally preserved trace fossils in Cambrian tidal flats. One quarry in particular also has the distinction of preserving some of the first land animals. These are preserved as three-dimensional casts, which is unusual for Cambrian animals that are only lightly biomineralized.^[2] Additionally, Blackberry Hill is the first occurrence recognized to include Cambrian mass strandings of scyphozoans (jellyfish).^[3]