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

Description

This VERY RARE Heteromorph ammonite fossil, Scaphites – Jeletzkytes nebrascensis, is an exceptional 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 100% genuine and comes with a Certificate of Authenticity. It is particularly unique for its iridescent sheen, making it a standout piece for any fossil collection.

Geology and Fossil Type

• Geological Stage: Maastrichtian, Late Cretaceous
• Depositional Environment: Marine (The Pierre Shales and Fox Hills Sandstone were part of a marine environment during the Maastrichtian period, providing the ideal conditions for the preservation of ammonites like Jeletzkytes nebrascensis. This fossil was preserved in ancient marine deposits of South Dakota.)
• Family: Scaphitidae (The Jeletzkytes nebrascensis belongs to the Scaphitidae family, a group of ammonites known for their heteromorphic shapes.)
• Superfamily: Ammonoidea
• Order: Ammonitida (This fossil is classified under the Cephalopoda class, which includes modern squid, cuttlefish, and octopuses.)

Morphology Features

The Jeletzkytes nebrascensis ammonite is a heteromorphic ammonite, meaning its coiling shape is irregular and deviates from the traditional spiral. This fossil exhibits a knobby and unique appearance with distinct, uneven coiling that gives it a corkscrew-like form. It has been preserved in remarkable detail, showcasing suture lines and ribbing that give it a textured surface.

Notable Features

• Rare Iridescent Shine: This ammonite is prized for its iridescent sheen, which adds a stunning visual appeal and makes it highly collectible.
• Heteromorphic Shape: The irregular coiling and corkscrew-like appearance make this fossil a rare and highly sought-after specimen for collectors of Cretaceous ammonites.
• Well-Preserved Surface Details: The fossil exhibits visible suture lines and textured surface features, perfect for those interested in studying its detailed structure and evolutionary significance.
• Scientific and Historical Value: This fossil represents an important part of marine life during the Late Cretaceous period, providing valuable insights into the diversity of ancient marine ecosystems.

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.

Key Selling Points

• 100% Genuine Fossil
• Comes with a Certificate of Authenticity
• Rare Heteromorph Ammonite Jeletzkytes nebrascensis from the Pierre Shales and Fox Hills Sandstone
• Found in Egremont, South Dakota, from the Maastrichtian, Late Cretaceous period
• Features iridescent shine, uneven coiling, and visible suture lines
• Ideal for collectors of Cretaceous ammonites and marine fossils

This Jeletzkytes nebrascensis fossil from the Pierre Shales and Fox Hills Sandstone in South Dakota, USA is a rare and highly desirable piece from the Maastrichtian, Late Cretaceous period. Its iridescent sheen, distinctive corkscrew shape, visible suture lines, and well-preserved surface details make it an exceptional addition to any fossil collection.