Ammonites

Buried Treasure Fossils offers a large selection of top quality Ammonites for sale. We have Ammonites from France, Madagascar, Morocco, Russia, etc. We have pyrite, red flash, natural, cut and polished Ammonites. Also have nice Orthoceras. These Ammonites are complete and no repair. These Ammonites can show great color, internal crystals and pyrite replacement. Authenticity guaranteed. Great gifts!
- 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 - Cleoniceras sp.$60.00
An incredible sliced and polished Cleoniceras ammonite showing the intricate internal chamber structure with crystal lined pockets. A gorgeous Cretaceous ammonite from Madagascar. The exterior is natural with a hint of red flash. Authenticity guaranteed. A great gift item.
X217 Size: 4-1/8"
Note - Adding 17 Madagascar ammonites in November 2024 --> Link to Madagascar ammonites
Learn More - Hoploscaphites brevis$60.00
A natural Hoploscaphites brevis ammonite with great preservation of the shell material. The ammonite shell exhibits excellent natural iridescence. This specimen is sits in an original Pierre Shale with a flat base for a great display. The base is a large baculite segment. This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A fantastic display piece.
SD10 Size: 1-1/16"
Note - Adding 6 So. Dakota ammonites in August 2025. --> Link to So. Dakota Ammonites
Learn More - Cleoniceras sp. - Red Flash$60.00
A polished Cleoniceras ammonite which brings out the brilliant flashes of red and green in the aragonite shell material (produces an "opal-like sheen!") from the Cretaceous of Madagascar.
XM304 Size: 2-3/8"
Learn MoreNote - Adding 15 Madagascar ammonites in December 2025 --> Link to Madagascar ammonites
- Cleoniceras sp.$60.00
An incredible sliced and polished Cleoniceras ammonite showing the intricate internal chamber structure with crystal lined pockets. Some pockets are crystal lined! A gorgeous Cretaceous ammonite from Madagascar. The slightly polished exterior has a hint of "red flash". Authenticity guaranteed. A great gift item.
X219 Size: 3-3/4"
Note - Adding 15 Madagascar ammonites in December 2025 --> Link to Madagascar ammonites
Learn More - Cleoniceras besairei$55.00
The Ammonite Collection. A Top Quality Cleoniceras besairei ammonite from Tulcar, Morocco. This Cretaceous (Albanian) ammonite shows good structure. Very good preservation. Nice color! Authenticity guaranteed.
AM07 Specimen size: 3-1/2" x 2-3/4"
Adding an 11 piece ammonite collection in November 2023. Link to Other Ammonites.
Learn More - Cleoniceras sp.$55.00
An incredible sliced and polished Cleoniceras ammonite split pair from Madagascar. This gorgeous ammonite shows the intricate internal chamber structure with large crystals. Fantastic golden color. Very showy. The exterior is natural. Authenticity guaranteed. A very affordable gift.
AM04 Specimen size: 6" x 2-3/8" (two halves displayed)
Adding an 11 piece ammonite collection in November 2023. Link to Other Ammonites.
Learn More - Quenstedticeras lamberti$55.00
A gorgeous Quenstedticeras 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.
XR220 Size: 2-1/8"
Adding 23 pyritized Ammonites in November 2021. 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
Learn More - Cleoniceras sp. - Red Flash$55.00
A polished Cleoniceras ammonite which brings out the brilliant flashes of red and green in the aragonite shell material (produces an "opal-like sheen!") from the Cretaceous of Madagascar.
XM305 Size: 2-1/4"
Learn MoreNote - Adding 15 Madagascar ammonites in December 2025 --> Link to Madagascar ammonites
- Goniatites sp. - early Ammonite relative$50.00
An incredible, LARGE 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. Thick (1-1/8"). This is a great early Ammonite. An excellent display item!
Name: Goniatites sp. , Age: Devonian (350 MM years ago), Location: Atlas Mt., Morocco
M2005 Size: 4" (1-1/8" wide)
Note - Adding 18 Moroccan Goniatites in December 2021. Link to Moroccan Goniatites
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