VERY RARE Heteromorph Ammonite Scaphites, Pierre Shales, Fox Hills Sandstone, Maastrichtian, Late Cretaceous: Egremont, USA – COA

Description

This VERY RARE Heteromorph ammonite fossil, Scaphites, is an extraordinary specimen from the Pierre Shales and Fox Hills Sandstone formations of Egremont, South Dakota, USA. It dates back to the Maastrichtian, Late Cretaceous period. This 100% genuine specimen is a unique piece for fossil collectors and comes with a Certificate of Authenticity.

Geology and Fossil Type

• Geological Stage: Maastrichtian, Late Cretaceous
• Depositional Environment: Marine (The Pierre Shales and Fox Hills Sandstone were marine environments during the Maastrichtian, providing ideal conditions for preserving ammonite fossils like Scaphites.)
• Family: Scaphitidae (The Scaphites genus belongs to the Scaphitidae family, known for its heteromorphic ammonite shapes.)
• Superfamily: Ammonoidea
• Order: Ammonitida (Ammonites are cephalopods closely related to squid, octopuses, and cuttlefish.)

Morphology Features

The Scaphites ammonite is a heteromorphic ammonite, meaning it has an irregular coiling pattern. Unlike typical spiral ammonites, heteromorphs such as Scaphites have evolved unique coiling shapes, often seen in the corkscrew-like structure. This fossil showcases an exceptional level of preservation, with visible suture lines, intricate details of the internal shell, and the characteristic irregular coiling.

Notable Features

• Rare and Collectible: This Scaphites ammonite is extremely rare due to its unique heteromorphic shape and the age of the fossil.
• Visible Suture Lines: The suture lines are clearly visible and offer insight into the internal shell structure of the ammonite.
• Well-Preserved Structure: The fossil retains much of its original morphology, showcasing the irregular corkscrew shape that is characteristic of heteromorphic ammonites.

Scientific and Historical Value

This Scaphites ammonite represents a fascinating glimpse into the evolution of ammonites during the Late Cretaceous period. The species lived in marine environments, and its heteromorphic coiling is an example of evolutionary diversity. This specimen is an invaluable addition to any Cretaceous fossil collection, offering both scientific significance and historical value.

Size and Presentation

• Scale Cube: 1cm
• Full sizing details are available in the photos, allowing you to see the exact dimensions of the fossil.
• 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 Scaphites 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 Scaphites 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 addition to any fossil collection.