South Dakota Ammonites For Sale - FossilEra.com

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The Upper Cretaceous-aged Fox Hills Formation and Pierre Shale of South Dakota produce a diverse array of beautiful ammonite fossils. These ammonites are typically found inside of hard concretions that are broken open, and then must be prepared using manual tools to remove the excess rock. FossilEra has a wide selection of these fine South Dakota ammonites for sale at great prices!

229 Items ($29 to $495)

Wide Fossil Ammonite Cluster - South Dakota #137271

8.6" Wide Fossil Ammonite Cluster - South Dakota

Two Iridescent Fossil Ammonites (Discoscaphites) - South Dakota #209666

Two Iridescent Fossil Ammonites (Discoscaphites) - South Dakota

Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota #242534

2.7" Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota

Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota #242537

1.75" Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota

Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota #242538

2.4" Cretaceous Fossil Ammonite (Hoploscaphities) - South Dakota

Museum Quality Placenticeras Ammonite - South Dakota #31427

Museum Quality 20.5" Placenticeras Ammonite - South Dakota

Placenticeras Ammonite With Phragmocone #31430

12.5" Placenticeras Ammonite With Phragmocone

World Class, Red Iridescent Hoploscaphities Ammonite #31408

World Class, Red Iridescent Hoploscaphities Ammonite

Sphenodiscus Ammonite with Inlaid Chrysocolla - South Dakota #93141

5.6" Sphenodiscus Ammonite with Inlaid Chrysocolla - South Dakota

Sphenodiscus Ammonite With Rare Purple Iridescence #31426

9.4" Sphenodiscus Ammonite With Rare Purple Iridescence

Pristine Fossil Ammonite (Hoploscaphites) - South Dakota #209665

3.85" Pristine Fossil Ammonite (Hoploscaphites) - South Dakota

Placenticeras meeki Ammonite - Opalescent Shell #6095

6.7" Placenticeras meeki Ammonite - Opalescent Shell

Red, Iridescent Hoploscaphites Ammonite Fossil - Montana #209664

3.75" Red, Iridescent Hoploscaphites Ammonite Fossil - Montana

Placenticeras Ammonite Fossil - South Dakota #21641

11.2" Placenticeras Ammonite Fossil - South Dakota

Baculite & Ammonite Specimen - South Dakota #6099

14" Baculite & Ammonite Specimen - South Dakota

Rare Hoplocaphites spedini - Exceptional Specimen #6104

Rare Hoplocaphites spedini - Exceptional Specimen

Fossil Ammonites (Sphenodiscus) - South Dakota #144027

8.5" Fossil Ammonites (Sphenodiscus) - South Dakota

Excellent Fossil Ammonite Cluster - South Dakota #131227

Excellent Fossil Ammonite Cluster - South Dakota

Iridescent Ammonite w/ Fairburn Agate Stand - South Dakota #209705

3.2" Iridescent Ammonite w/ Fairburn Agate Stand - South Dakota

Huge, Fossil Ammonite (Placenticeras) - South Dakota #144026

Huge, 12.5" Fossil Ammonite (Placenticeras) - South Dakota

Purple Flash Fossil Ammonite (Sphenodiscus) - South Dakota #285102

2.5" Purple Flash Fossil Ammonite (Sphenodiscus) - South Dakota

Large, Fossil Ammonite (Sphenodiscus) - South Dakota #143837

Large, 9" Fossil Ammonite (Sphenodiscus) - South Dakota

Red Iridescent Ammonite (Hoploscaphites) - South Dakota #131228

2.6" Red Iridescent Ammonite (Hoploscaphites) - South Dakota

Fossil (Jeletzkytes) Ammonite - South Dakota #129526

4.6" Fossil (Jeletzkytes) Ammonite - South Dakota

Hoploscaphites Brevis Ammonite - South Dakota #77845

3.2" Hoploscaphites Brevis Ammonite - South Dakota

Placenticeras Ammonite - South Dakota #6098

6.4" Placenticeras Ammonite - South Dakota

Large Red Iridescent Sphenodiscus Ammonite - #6100

Large Red Iridescent Sphenodiscus Ammonite - 10.3"

Fossil Discoscaphites Gulosus Ammonite - South Dakota #131223

2.3" Fossil Discoscaphites Gulosus Ammonite - South Dakota

Cretaceous Fossil Ammonite Cluster - South Dakota #115363

Cretaceous Fossil Ammonite Cluster - South Dakota

Fossil Ammonite (Planticeras) in Rock - South Dakota #143839

7.1" Fossil Ammonite (Planticeras) in Rock - South Dakota