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

Description

This VERY RARE Heteromorph ammonite fossil, Scaphites – Jeletzkytes, is a stunning example of a heteromorphic ammonite from the Pierre Shales and Fox Hills Sandstone formations in Egremont, South Dakota, USA. Dating back to the Maastrichtian period of the Late Cretaceous, this specimen is iridescent, showcasing the unique features of heteromorphic ammonites. This fossil comes with a Certificate of Authenticity and is a highly desirable addition to any fossil collection.

Geology and Fossil Type

• Geological Stage: Maastrichtian, Late Cretaceous
• Depositional Environment: Marine (The Pierre Shales and Fox Hills Sandstone were deposited in shallow marine conditions, ideal for the preservation of ammonites like Jeletzkytes.)
• Family: Scaphitidae (The Jeletzkytes genus belongs to the Scaphitidae family, which includes heteromorphic ammonites known for their irregular shapes.)
• Superfamily: Ammonoidea
• Order: Ammonitida (A subclass of cephalopods related to squids, octopuses, and cuttlefish.)

Morphology Features

The Jeletzkytes ammonite is characterized by its irregular corkscrew-like coiling, which is typical of heteromorphic ammonites. This specimen displays iridescent features, which are rare and highly sought after, making it a unique and visually stunning fossil. The suture lines are also visible, offering valuable insight into the internal shell structure.

Notable Features

• Extremely Rare: This Jeletzkytes ammonite is a heteromorphic ammonite, known for its irregular, corkscrew shape. The iridescent color adds further value, making it a rare and sought-after fossil.
• Visible Suture Lines: The suture lines on the fossil are clearly visible, providing important details about the internal structure of the ammonite and its evolutionary significance.
• Preserved in Detail: The irregular coiling and distinct suture lines are exceptionally well-preserved, providing a clear view of the ammonite’s morphology.

Scientific and Historical Value

This fossil is an excellent example of the evolutionary diversity of ammonites during the Late Cretaceous period. The heteromorphic shape of Scaphites, particularly Jeletzkytes, is a fascinating feature that reflects evolutionary adaptations to the marine environment. Fossils like this one are rare and highly valued for their scientific importance and historical context.

Size and Presentation

• Scale Cube: 1cm
• Full sizing details are available in the photos, showing the exact dimensions of the fossil.
• Actual Fossil: The fossil shown in the photos is the exact specimen you will receive, and it is carefully chosen for its iridescent features and excellent preservation.

Key Selling Points

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

This Jeletzkytes ammonite from the Pierre Shales and Fox Hills Sandstone of South Dakota, USA is an extremely rare, scientifically significant fossil from the Late Cretaceous period. Its iridescent coloration, heteromorphic shape, and visible suture lines make it a unique and highly desirable piece for any fossil collection. This fossil offers both scientific value and aesthetic appeal, making it an excellent choice for collectors.