Ammonites

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 incredible whole polished Cleoniceras ammonite showing the intricate external chamber structure. Fantastic honey color. A gorgeous Cretaceous ammonite from Madagascar. Authenticity guaranteed. A chrome easel stand is included with this ammonite. A great gift item.     

X210       Size: 4-1/2"  (1-1/16" wide)

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

An incredible whole Cleoniceras ammonite with a lightly polished exterior showing lashes of red and green in the aragonite shell material (produces an "opal-like sheen!"). A gorgeous Cretaceous ammonite from Majanga, Madagascar. No repair or restoration. Authenticity guaranteed. A great gift item.     

X231       Size: 5-3/8"  

Note - Adding 12 Madagascar ammonites in December 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

A Top Quality pyritized Pleuroceras solare ammonite from Unterstuermig, Germany. This Lower Jurassic ammonite shows intricate structure. Nearly matrix free. Exceptional color! Authenticity guaranteed.  

X265     Size: 1-7/16" 

Adding 10 German Ammonites in October 2022.    Link to Pyritized 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

A Top Quality pyritized Pleuroceras solare ammonite from Unterstuermig, Germany. This Lower Jurassic ammonite shows intricate structure. Nearly matrix free. Exceptional color! Authenticity guaranteed.  

X266     Size: 1-3/8" 

Adding 10 German Ammonites in October 2022.    Link to Pyritized ammonites.

A natural Hoploscaphites nebrascensis ammonite with excellent preservation of the shell material. This ammonite species exhibits big ribs with multiple rows of tubercles (nodes). This specimen is sits on 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.  

SD03        Size: 1-7/8"

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

An incredible whole Cleoniceras ammonite with a lightly polished exterior showing lashes of red and green in the aragonite shell material (produces an "opal-like sheen!"). A gorgeous Cretaceous ammonite from Majanga, Madagascar. No repair or restoration. Authenticity guaranteed. A great gift item.     

X232       Size: 4-3/4"  

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

A natural Hoploscaphites brevis ammonite with great preservation of the shell material. The ammonite shell exhibits some natural iridescence. A matrix free specimen. This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A fantastic display piece.

SD08        Size: 2"

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

A natural Hoploscaphites nebrascensis ammonite with excellent preservation of the shell material. The ammonite shell has some 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. The end is filled with calcite crystals! This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A fantastic display piece.  

SD07        Size: 1-5/8"

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