VERY RARE Heteromorph Ammonite Scaphites – Hoploscaphites landesi (Iridescent), Pierre Shales, Late Cretaceous, USA – COA

Description

This VERY RARE Heteromorph ammonite fossil, Scaphites – Hoploscaphites landesi, is a stunning and exceptionally rare specimen from the Pierre Shales and Fox Hills Sandstone formations of Egremont, South Dakota, USA. This ammonite is from the Maastrichtian, Late Cretaceous period, and is a 100% genuine specimen. The fossil comes with a Certificate of Authenticity. The Hoploscaphites landesi is a heteromorphic ammonite, and this specific specimen is especially remarkable for its iridescent sheen, making it a unique and highly prized addition for any fossil collection.

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 period, ideal for the formation of ammonites like Hoploscaphites landesi. This fossil was preserved in the marine deposits of South Dakota.)
• Family: Scaphitidae (The Hoploscaphites landesi species belongs to the Scaphitidae family, a group of ammonites known for their distinct coiling and heteromorphic features.)
• Superfamily: Ammonoidea
• Order: Ammonitida (This species, like all ammonites, belongs to the Cephalopoda class, closely related to modern squid, octopuses, and cuttlefish.)

Morphology Features

This Hoploscaphites landesi ammonite is a heteromorphic ammonite, characterized by its distinct, irregular coiling. Unlike other ammonites, Hoploscaphites landesi has a knobby appearance and a unique, asymmetric corkscrew shape. The fossil features well-preserved surface ridges and suture lines that are clearly visible. One of the most exceptional features of this specimen is its iridescent shell, which gives it a shiny, multi-colored appearance, making it visually striking and valuable for collectors.

Notable Features

• Very Rare Iridescent Heteromorph: The Hoploscaphites landesi ammonite is highly prized for its heteromorphic shape and iridescent sheen, making it a rare and unique fossil.
• Distinct Corkscrew Shape: The irregular coiling and knobby appearance make this fossil particularly fascinating and visually appealing.
• Iridescent Shine: This specimen has a unique iridescent appearance, a rare trait that increases its desirability and value in fossil collections.
• Preserved Surface Details: The ammonite shows clear ribbing, visible suture lines, and a detailed surface texture, providing both aesthetic and scientific value.
• Scientific Importance: This fossil helps shed light on the marine ecosystems of the Late Cretaceous period, providing valuable insight into the evolutionary history of heteromorphic ammonites.

Size and Presentation

• Scale Cube: 1cm
• Full sizing is provided in the photos so you can see the exact size of the ammonite.
• Actual Fossil: The fossil pictured is the exact piece you will receive.

Key Selling Points

• 100% Genuine Fossil
• Comes with a Certificate of Authenticity
• Rare and Unique Hoploscaphites landesi ammonite with iridescent sheen
• Found in the Pierre Shales and Fox Hills Sandstone of South Dakota, from the Maastrichtian, Late Cretaceous period
• Features distinct corkscrew shape, knobby texture, iridescent shell, and visible suture lines
• Ideal for collectors and those interested in Cretaceous ammonites and marine fossils

This Hoploscaphites landesi fossil from the Pierre Shales and Fox Hills Sandstone of Egremont, South Dakota, USA is a rare and highly collectible specimen from the Maastrichtian, Late Cretaceous period. Its iridescent sheen, irregular coiling, knobby appearance, and well-preserved surface features make it a stunning addition to any fossil collection.