Natural Science Forum / Biology / Paleontology / September 2005

Just about anywhere you can find an exposure I think.  I've only been
through the state a couple of times.  As I recall, there are good
exposures around Wasta.  Lots of Baculites fragments.  Some good
ammonites I'm told.  As I recall, the full formation is said to be
exposed in road cuts West of the Fort Randall Dam.

A few others from my data base -- No clue how good they are

"Bridger","Meade","SD","Cheyenne River","Cretaceous","Pierre
Shale","Cephalopods Eutrephoceras, Placenticeras, Baculites",,

"Elk Creek",,"SD",,"Cretaceous","Pierre Shale","Cephalopods -
Baculites",,

"Fort Randall Dam",,"SD","on US18 complete section of Pierre Shale on
W side of the Missouri River","Cretaceous","Pierre","vertebrates and
invertebrates--",,

"Rapid City",,"SD","in road cuts on Star Route
44","Cretaceous","Pierre","invertebrates in large concretions.",,

"Sage Creek/Ft Pierre","Stanley","SD",,,,"Baculites",,

"Wasta",,"SD","in road cuts on
I-90","Cretaceous","Pierre","invertebrates in large concretions.",,

"Wasta",,"SD","N along Elk Creek and Cheyenne
River.","Cretaceous","Pierre Shale","Fossils in Concretions",,

"Yankton",,"SD","3 mi W near Gavins Point Dam in quarries along N bank
of Missouri River","Cretaceous","Pierre","shells, fish, reptiles",,

,"Fall River County","SD","OnUS18? Near county line, tepee
buttes","Cretaceous","Pierre","poorly preserved pelecypods.",,

,"Fall Rive Countyr","SD",,"Cretaceous","Pierre Shale","cephalopods -
Cirroceras",,

,"Meade County","SD",,"Cretaceous","Pierre Shale","Cephalopods -
Acanthoscaphites",,

,"Pennington County","SD","In area
exposures","Cretaceous","Pierre","Baculites",,

A Google search on "Pierre Shale" and "South Dakota" will probably
turn up a bunch of sites

Christians say you just carve those fossils out of the rock in any shape you
desire.