VERY RARE Heteromorph Ammonite Scaphites – Jeletzkytes nebrascensis, Pierre Shales, , Maastrichtian, Late Cretaceous: Egremont, USA – COA

Description

This VERY RARE Heteromorph ammonite fossil, Scaphites – Jeletzkytes nebrascensis, is a highly sought-after specimen from the Pierre Shales and Fox Hills Sandstone formations, dating back to the Maastrichtian, Late Cretaceous period. Discovered in Egremont, South Dakota, USA, this ammonite is a 100% genuine specimen and comes with a Certificate of Authenticity. This fossil is prized for its unique heteromorphic shape and excellent preservation.

Geology and Fossil Type

• Geological Stage: Maastrichtian, Late Cretaceous
• Depositional Environment: Marine (The Pierre Shales and Fox Hills Sandstone were part of an ancient marine environment during the Maastrichtian period, making them ideal for the preservation of ammonites like Jeletzkytes nebrascensis.)
• Family: Scaphitidae (The Jeletzkytes nebrascensis belongs to the Scaphitidae family, known for its heteromorphic ammonite shapes.)
• Superfamily: Ammonoidea
• Order: Ammonitida (Ammonites are cephalopods related to modern squid, cuttlefish, and octopuses.)

Morphology Features

This Jeletzkytes nebrascensis ammonite is a heteromorphic ammonite, meaning its shape deviates from the typical spiral and features a more irregular coiling. This fossil shows the corkscrew-like structure characteristic of heteromorph ammonites. It is well-preserved, showcasing intricate suture lines, which offer an in-depth view of its internal shell structure.

Notable Features

• Rare and Collectible: Jeletzkytes nebrascensis is a rare ammonite that exhibits distinct heteromorphic characteristics, making it highly collectible.
• Visible Suture Lines: The suture lines in this fossil are clearly visible, providing a detailed view of the structure and offering valuable insight into the species’ evolutionary history.
• Well-Preserved Structure: The fossil’s surface is well-preserved, retaining much of its original features and texture, including the corkscrew shape and textured surface.

Scientific and Historical Value

This Jeletzkytes nebrascensis ammonite offers a rare and scientifically significant glimpse into life during the Late Cretaceous period. The species lived in ancient marine environments, and this specimen showcases the diverse morphology of ammonites, which evolved over millions of years.

Size and Presentation

• Scale Cube: 1cm
• Full sizing details are available in the photos, allowing you to see the exact dimensions of the ammonite.
• Actual Fossil: The fossil pictured is the exact specimen you will receive, and it is carefully chosen to represent the highest quality available.

Key Selling Points

• 100% Genuine Fossil
• Comes with a Certificate of Authenticity
• Extremely Rare Heteromorph Ammonite Jeletzkytes nebrascensis from the Pierre Shales and Fox Hills Sandstone
• Found in Egremont, South Dakota, dating back to the Maastrichtian, Late Cretaceous period
• Features visible suture lines, irregular coiling, and a well-preserved surface
• Ideal for collectors of Cretaceous ammonites and marine fossils
• Perfect for display, study, or as a unique collector’s item

This Jeletzkytes nebrascensis ammonite from the Pierre Shales and Fox Hills Sandstone of South Dakota, USA, is a highly collectible, scientifically significant fossil from the Late Cretaceous period. Its heteromorphic shape, visible suture lines, and excellent preservation make it a standout piece for any fossil collection.