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Ammonites
Open Chamber Ammonites
Shloenbacchia variosis sp.
Cretaceous
Atlas Mountains, Morocco
These varied and decorative invertebrate specimens evolved from nautiloids in the early Devonian Period around 450 million years ago. They flourished worldwide for approximately the next 370 million years and became extinct along with the dinosaurs in the late Cretaceous Period. Their descendant, the chambered nautilus, can still be found in the warm shallow seas of the Indian Ocean. Each of these rare and stunning specimens features open chambers throughout and shows elegant sculptured beauty.
Specimen Diameter Measures: 3" to 12".
SRP: $150
Ammonite with Mosasaur Bite Marks
Placenticeras
Cretaceous
South Dakota
Distinguished by the presence of distinct teeth marks made by its marine contemporary, the giant Mosasaurus,
a highly desirable fossil cephalopod exhibits original mother of pearl shell still intact. On the original matrix.
Diameter Measures: 11".
SRP: $2,975
Ammonite in Nodule
Placenticeras lenticularis
Cretaceous
South Dakota
Still embedded in the original matrix, this specimen has been prepared revealing both the intricate suture
patterns and the colorful mother-of-pearl shell.
Specimen Diameter Measures: 6".
SRP: $700
Double Ammonite Plaque
Lytoceras sp., Hildoceras sp.
Jurassic
Holzmaden, Germany
Two large ammonites exemplify the natural golden coloration (produced by the presence of pyrite)
and well-defined sutures, or growth plates, of specimens from this classic locality. Numerous
smaller ammonite specimens on the irregularly shaped matrix of rich, brown-black shale enhance
the attractive presentation.
Ammonites measure: 7" and 9 ½", respectively. Display measures 18 ½"x 22 ½".
SRP: $1,050
Ammonite Plaque
Lytoceras sp., Hildoceras sp.
Jurassic
Holzmaden, Germany
Holmaden’s famous black shales are known for producing some of the world’s finest Jurassic marine
fossils. Delicate golden shell imprints, when complete, such as the present specimens, are highly
prized for their decorative impact. Three stunning ammonites dominate the center of this Jurassic
masterpiece.
Ammonites measure: 8", 8", and 6", respectively.
Plaque measures: 23 ½" x 31".
SRP: $950
French Ammonite on Matrix
Arietities bucklandi
Lower Jurassic
France
The rich black color of an ammonite contrasting with gray matrix makes this piece highly desirable
as an interior design accent. Exhibiting both sculptural beauty and scientific credibility. Prepared
in the original matrix, which functions as a base.
Diameter measures: 19".
SRP: $2,000
Agadir Ammonite
Ammonite sp.
Cretaceous
Morocco
A very large and decorative ammonite with deep ribbing visible.
22" in length.
SRP: $750
Red Scaphite on Matrix
Jeletzkytes nebrascensis
Upper Maastrichtian, Late Cretaceous
Fox Hills Formation, Dewey County, South Dakota
An exceptionally aesthetic scaphite exhibiting an iridescent red patina on original matrix.
Measures: 4 ½".
SRP: $2,500
Russian Ammonite Pair
Simbirskites versicolor
Cretaceous
Hauterivian Stage
Wolga, Russia
Two halves of a large Russian ammonite display glittering pyrite and attractive yellow calcite in the inner
chambers—phragmocones—which originally contained air to aid in the living creature’s buoyancy. The outer chamber,
in which the animal itself lived, contrasts dramatically with rich black coloration. The sizable pair is highly
decorative.
Each measures: 14 ½".
SRP: $4,250
Pair of Cut Ammonites
Simbriskites versicolor
Cretaceous
Hauterivian Stage
Wolga, Russia
A pyritized ammonite with polished faces on both halves exhibits both yellow calcite and iron pyrite
chambers in a stunning display of color.
Each measures: 11" x 10" x 1".
SRP: $1,500
Ammonite Sculpture
Orthoceras sp.
Ordovician
Morocco
A sinuous and graceful ammonite sculpture features an ancient shellfish related to today’s chambered nautilus.
Handsome, well-defined markings on the ammonite indicate stages of the living creature’s growth. Interesting
variations in the coloration of the polished matrix include brown, tan and off-white tones.
Measures: 35 ½" x 22" x 5".