Ammonites

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

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.

A natural Hoploscaphites nebrascensis ammonite with excellent preservation of the shell material. The ammonite shell has some natural iridescence. This ammonite species exhibits big ribs with multiple rows of tubercles (nodes). This specimen is sits in an original Pierre Shale nodule with a flat base for a great display. This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A fantastic display piece.  

SD02        Size: 2-1/8"

Note - Adding 10 So. Dakota ammonites in December 2020.  -->  Link to So. Dakota Ammonites

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 quite wide or thick.   Authenticity guaranteed. A very showy specimen!      

X244        Size: 3-1/8"  (1-3/4" wide)

Note - Adding 12 Madagascar ammonites in December 2024  -->   Link to Madagascar ammonites

An incredible sliced and polished Cleoniceras ammonite showing the intricate internal chamber structure with crystal lined pockets. Several 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.     

X214       Size: 5-3/4"

Note - Adding 15 Madagascar ammonites in December 2025  -->   Link to Madagascar ammonites

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.  

M2024           Plate size: 13-1/2" x 12"

Note - Adding five Orthoceras specimens in October 2022.   Link to Othoceras plates

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

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.

An exceptional natural Kranosphinctes (Perisphinctes) ammonite showing a very nice external design from Saharaha, Madagascar.  Jurassic age. A gorgeous display item!  Authenticity guaranteed. Note - This item weighs 2.6 lbs.  International customers will not have free shipping. 

X280      Size: 6"  (2-1/8" wide)

Note - Adding 17 Madagascar ammonites in November 2024  -->   Link to Madagascar ammonites

A natural Hoploscaphites brevis ammonite with great preservation of the shell material. This specimen is sits in an original Pierre Shale with a flat base for a great display. This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A fantastic display piece.

SD11        Size: 1-3/4"

Note - Adding 6 So. Dakota ammonites in August 2025.  -->  Link to So. Dakota Ammonites

An incredible sliced and polished Cleoniceras ammonite showing the intricate internal chamber structure with crystal lined pockets. All 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.     

X215       Size: 4-5/16"

Note - Adding 15 Madagascar ammonites in December 2025  -->   Link to Madagascar ammonites

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.   

X213       Size: 5-1/4"

Note - Adding 20 Madagascar ammonites in April 2023  -->   Link to Madagascar ammonites