RARE Eubostrychoceras elongatum Fossil | Heteromorph Ammonite | Santonian Cretaceous | Coutenay Canada | Genuine with COA

Description

For sale is a spectacular and RARE heteromorph ammonite fossil, Eubostrychoceras elongatum, discovered in the Santonian Stage of the Cretaceous Period in Coutenay, Canada. This uniquely coiled cephalopod fossil represents a dramatic departure from the traditional planispiral ammonite form, making it a prized specimen for collectors and researchers alike.

This fossil is 100% genuine and comes with a Certificate of Authenticity. The specimen shown in the photo is the exact item you will receive. The scale cube in the image = 1cm. Please review the image for full sizing.

Geological & Scientific Information:

• Fossil Type: Ammonite (extinct marine cephalopod)
• Species: Eubostrychoceras elongatum
• Family: Nostoceratidae
• Superfamily: Turrilitoidea
• Order: Ammonitida
• Geological Age: Santonian Stage, Late Cretaceous (~86.3 to 83.6 million years ago)
• Location: Coutenay, British Columbia, Canada
• Depositional Environment: Shallow marine shelf; typically deposited in fine marine sedimentary sequences rich in invertebrate faunas
• Biozone Significance: Eubostrychoceras species assist in biostratigraphic zoning within the Upper Cretaceous due to their distinct heteromorph forms

Morphological Features:

• Characterised by its tightly wound, helically twisted shell—a classic heteromorph form
• Elongated, non-planispiral coiling with visible chamber segmentation and ribbing
• Often exhibits suture patterns near the aperture and a well-defined keel
• Unusual geometry provides a stark visual contrast to standard ammonite fossils

Scientific Importance: Eubostrychoceras elongatum is a member of the heteromorph ammonites, which evolved unique shell morphologies potentially as adaptations to specific ecological niches. This genus highlights evolutionary experimentation in the Late Cretaceous seas and provides key data for paleoenvironmental and evolutionary research.

Collector & Display Value:

• Highly distinctive and rare fossil form
• Ideal for collectors of heteromorphs or unusual ammonite species
• Perfect for museums, fossil displays, or educational collections

Why Buy from Us?

• All fossils are 100% authentic and responsibly sourced
• Every specimen includes a Certificate of Authenticity
• Professionally prepared, clearly photographed, and carefully packed

Add a rare and beautifully coiled piece of ancient marine history to your collection with this authentic Eubostrychoceras elongatum ammonite fossil from the Late Cretaceous of Canada.