Ammonites
Buried Treasure Fossils offers a large selection of top-quality ammonites for sale. Our diverse inventory features specimens sourced from France, Madagascar, Morocco, Russia, and beyond. We offer a variety of types, including pyrite, red flash, natural, and cut-and-polished ammonites, as well as delicate Orthoceras fossils.
Our ammonites are complete specimens with no repairs, often showcasing exceptional color, internal crystals, and pyrite replacement. Authenticity is guaranteed, making these fossils excellent additions to any collection or lavish gifts.
- Plenoceras costatum$125.00
The Ammonite Collection. A cluster of three Top Quality pyritized Pleuroceras costatum ammonites from Heinbaum, Germany. There are two specimens on top and one on the bottom with a fossil clam. This Jurassic ammonite shows an intricate pyrite replaced structure. Exceptional color! Authenticity guaranteed.
AM11 Size: 1-1/4"
Adding an 11 piece ammonite collection in November 2023. Link to Other Ammonites.
Learn More - Cheloniceras albien$125.00
The Ammonite Collection. A Top Quality Cheloniceras albieni ammonite from El Habib, Madagascar. This Cretaceous (Albanian) ammonite is prepared to show the internal good structure. Very unique piece. A thick ammonite. Excellent preservation. Great color! Authenticity guaranteed.
AM06 Specimen size: 3-1/2" x 2-7/8" x 1-3/4" Thick
Adding an 11 piece ammonite collection in November 2023. Link to Other Ammonites.
Learn More - Goniatites sp. - early Ammonite relative$125.00
An EXTRA LARGE, incredible polished Goniatites sp., an early ammonite-like cephalopod showing the intricate internal chamber structure. The rock matrix is a beautiful marble material and the cavities are mineral filled! These Goniatites are beautifully polished on all sides. An extra thick specimen (1-3/4"). Authenticity gauranteed. This is a great early Ammonite. An excellent display items! Note - This item weighs 2.7 lbs. An international supplemental postage charge will be applied.
Name: Goniatites sp. , Age: Devonian (350 MM years ago), Location: Atlas Mt., Morocco
M2001 Size: 7" (1-3/4" thick)
Learn More - Douvilleiceras sp.$120.00
An incredible whole polished Douvilleiceras ammonite showing the intricate external shell suture structure. Gorgeous Cretaceous ammonites from Madagascar. Douvilleiceras has large external ribs and is very wide or thick. Authenticity guaranteed. A very showy specimen!
X243 Size: 3-3/8" (1-3/4" wide)
Note - Adding 15 Madagascar ammonites in December 2025 --> Link to Madagascar ammonites
Learn More - Quenstedticeras lamberti$115.00
A gorgeous Quenstedticeras lamberti ammonite from the Saratov region of Russia. Incredible pyrite replaced ammonite with a crystal lined interior. This ammonite has natural irredescent crystal colors - very nice. Excellent pyrite crystals! Middle Jurassic age. Authenticity guaranteed. Note - supply of these pyrite ammonites stopped in 2011. This is the last of my inventory.
XR207 Size: 1-3/4"
Adding 23 pyritized Ammonites in November 2021. Link to Pyritized ammonites.
Learn More - Orthoceras sp.$95.00
A LARGE, incredible polished Orthoceras plate showing the intricate internal chamber structure from Morocco. These are Devonian age squid-like creatures. Gorgeous jet black and white colors. Eleven Orthoceras specimens exposed. Largest Orthoceras is 11" in length. A museum quality Orthoceras plate. An incredible display piece! Note: Large and heavy Orthoceras plates will require a supplemental international shipping charge. This items weighs 12.75 lbs. to ship. Please request quote.
M2022 Plate size: 13-1/2" x 9"
Note - Adding five Orthoceras specimens in October 2022. Link to Othoceras plates
Learn More - Quenstedticeras lamberti$95.00
A gorgeous Quenstedticeras lamberti ammonite from the Saratov region of Russia. Incredible pyrite replaced ammonite with a crystal lined interior. Excellent pyrite crystals! Middle Jurassic age. Authenticity guaranteed. Note - supply of these pyrite ammonites stopped in 2011. This is the last of my inventory.
XR206 Size: 1-3/4"
Adding 23 pyritized Ammonites in November 2021. Link to Pyritized ammonites.
Learn More - The Fossil Book$75.00
The Fossil Book - Hand carved and polished with multiple Orthoceras exposed. The rock matrix is a beautiful material and the Orthoceras cavities are mineral filled! Gorgeous jet black and white colors. Devonian (350 MM years ago). Atlas Mt., Morocco. An excellent display item or book end! Note: international shipping cost will be calculated. Please request quote.
M2045 SIZE: 5-1/4" x 7"
Learn More - The Fossil Book$75.00
The Fossil Book - Hand carved and polished with multiple Orthoceras exposed. The rock matrix is a beautiful material and the Orthoceras cavities are mineral filled! Gorgeous jet black and white colors. Devonian (350 MM years ago). Atlas Mt., Morocco. An excellent display item or book end! Note: international shipping cost will be calculated. Please request quote.
M2046 SIZE: 5-1/4" x 7"
Learn More - Quenstedticeras lamberti$60.00
A LARGE, TOP QUALITYQuenstedticeras lamberti ammonite from the Saratov region of Russia. Incredible pyrite replaced ammonites. Natural shell exterior is well preserved. Middle Jurassic age. Authenticity guaranteed. Note - supply of these pyrite ammonites stopped in 2011. This is the last of my inventory.
XR208 Size: 2-5/16"
Adding 4 pyritized Ammonites in November 2022. Link to Pyritized ammonites.
Learn More - Orthoceras sp.$55.00
An incredible polished Orthoceras plate showing the intricate internal chamber structure from Morocco. These are Devonian age squid-like creatures. Gorgeous jet black and white colors. Six Orthoceras specimens exposed. Largest Orthoceras is 7-1/4" in length. A museum quality Orthoceras plate. An incredible display piece! Note: Large and heavy Orthoceras plates will require a supplemental international shipping charge. This items weighs 4 lbs. to ship. Please request quote.
M2027 Plate size: 8-1/2" x 7"
Note - Adding five Orthoceras specimens in October 2022. Link to Othoceras plates
Learn More - Orthoceras sp.$55.00
An incredible polished Orthoceras plate showing the intricate internal chamber structure from Morocco. These are Devonian age squid-like creatures. Gorgeous jet black and white colors. Eight Orthoceras specimens exposed. Largest Orthoceras is 9" in length. A museum quality Orthoceras plate. An incredible display piece! Note: Large and heavy Orthoceras plates will require a supplemental international shipping charge. This items weighs 3.75 lbs. to ship. Please request quote.
M2025 Plate size: 10" x 6"
Note - Adding five Orthoceras specimens in October 2022. Link to Othoceras plates
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