Deltoideum delta Fossil Oyster – Rare Jurassic Gryphaea from Kimmeridge Clay, Dorset UK – Authentic Fossil with Certificate of Authenticity

Description

Authenticity Guaranteed:

We take pride in offering only 100% genuine fossil specimens. Each item in our collection is meticulously verified to ensure authenticity and comes with a Certificate of Authenticity, providing complete confidence in your purchase.

Specimen Overview:

• Name: Deltoideum delta
• Type: Gryphaea (Extinct oyster – marine bivalve mollusk)
• Age: Jurassic Period – Kimmeridgian Stage (~155–150 million years ago)
• Formation: Kimmeridge Clay
• Location Found: Wyke Regis, Dorset, United Kingdom
• Scale Reference: 1cm cube – see image for precise sizing
• Authenticity: Guaranteed Genuine – COA included

About This Fossil:

Immerse yourself in Earth’s ancient marine history with this beautifully preserved Deltoideum delta, a type of Gryphaea, or “Devil’s Toenail,” from the Jurassic seas of what is now southern England. A member of the Gryphaeidae family, this extinct oyster is known for its signature curved shell and prominent growth ridges, features shaped by life in dynamic, silty seabeds over 150 million years ago.

These fossils are commonly found in abundance in certain Jurassic strata, especially within the Kimmeridge Clay Formation of Dorset. Despite their relative abundance in specific geological contexts, quality specimens such as this—featuring excellent form, definition, and minimal matrix—are still prized by collectors for their display appeal and educational value.

Geological Significance:

The Kimmeridge Clay Formation is one of the most important fossil-bearing marine formations in the UK, dating to the Late Jurassic. This formation provides a remarkable record of marine invertebrates, including ammonites, belemnites, marine reptiles, and bivalves such as Deltoideum delta. Fossils from this locality offer invaluable insight into the shallow marine ecosystems that flourished during this period of Earth’s history.

Why This Fossil Is Special:

• Beautifully preserved Jurassic Gryphaea with strong definition
• Sourced from the famous Wyke Regis area in Dorset
• Tangible piece of the Jurassic seafloor ecosystem
• Distinctive oyster morphology with natural curves and growth lines
• Suitable for museum-quality display, fossil education, or collectors
• Includes Certificate of Authenticity
• Exact specimen photographed – not a stock image

ACTUAL AS SEEN:

You will receive the exact specimen pictured. Each fossil is hand-selected and professionally photographed to give you full confidence in the uniqueness and quality of your item.

• Scale cube = 1cm for accurate sizing
• Colours are presented as accurately as possible, though variations may occur depending on lighting and screen/device settings
• Fossils may be gently propped for photography purposes
• Once sold, a new unique listing will be created with fresh photos and dimensions

Discover the fascinating world of prehistoric marine life and own a rare piece of Earth’s history with this authentic Deltoideum delta fossil oyster from the Jurassic seas of Dorset. A perfect addition to any fossil collection, natural history display, or educational resource.