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Fossil Sponge in Flint | Grey Chalk Subgroup | Cretaceous | Branscombe Dorset

Original price was: £24.00.Current price is: £19.20.

Discover a rare and fascinating Fossil Sponge preserved in Flint, found within the Grey Chalk Subgroup of the Cretaceous period, from the historic coastal region of Branscombe, Dorset, UK. This specimen is 100% genuine, comes with a Certificate of Authenticity, and was discovered by our own team members, Alister and Alison, on 20 March 2025. It has been carefully cleaned, prepped, and treated by Alison, ensuring both scientific value and visual appeal.

Sponges are one of the oldest multicellular life forms on Earth, and fossil examples provide invaluable insight into early marine ecosystems. This particular fossil dates back to the Late Cretaceous, approximately 85–100 million years ago, when the region that is now Dorset was submerged under warm, shallow seas. The Grey Chalk Subgroup, part of the Upper Cretaceous sedimentary layers, is known for preserving marine fossils in flint nodules formed within chalk beds.

This beautifully preserved specimen captures the structure and texture of an ancient sponge, preserved through mineral replacement within a durable flint matrix. Fossils like this are sought after by collectors and geologists alike for their rarity and educational value.

This is a carefully selected, one-of-a-kind specimen, and the exact fossil shown in the listing photos is the one you will receive. A 1cm scale cube is included in the images for size reference—please refer to the photos for full dimensions.

Why Choose This Fossil? ✔️ Authentic Cretaceous Fossil Sponge in Flint from Branscombe, Dorset, UK

✔️ Discovered by Our Team – Alister and Alison – on 20 March 2025

✔️ Professionally Cleaned, Prepped, and Treated by Alison

✔️ 100% Genuine with Certificate of Authenticity

✔️ Perfect for Collectors, Educators, and Natural History Displays

✔️ Exact Fossil Shown – No Substitutes

✔️ Fast & Secure Shipping

Add a rare glimpse of Britain’s ancient marine life to your collection—order this unique Fossil Sponge in Flint today!

(Actual as seen)

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Description

Fossil Sponge in Flint from Cretaceous Dorset

Identification and Geological Setting

This specimen is identified as a fossil sponge preserved in flint, associated with the Grey Chalk Subgroup of the Cretaceous and the Branscombe area of Dorset. It offers collectors an attractive opportunity to own a geological specimen connected with the ancient marine environments represented by the Cretaceous rocks of southern England

Fossil sponges are the preserved remains or fossilised structures of simple aquatic animals belonging to the wider sponge group. During life, sponges filtered water through their bodies and commonly lived attached to the seabed. Their fossilised forms can be especially interesting because the original soft-bodied organism may be represented by a durable mineralised texture, outline or cavity within the surrounding rock.

Flint is a hard, silica-rich form of microcrystalline quartz that occurs within chalk and related marine sedimentary sequences. Its fine texture and resistance to weathering make it an important material in the study and collection of Cretaceous geological specimens. In this example, the fossil sponge is associated with flint, creating a natural combination of palaeontology and local geology.

Collector Interest

The Branscombe locality in Dorset is associated with the Cretaceous geology of the English coast and countryside. A fossil sponge in flint from this setting can appeal to collectors of British fossils, Dorset geology, chalk-associated specimens and natural history displays. It is also suitable for educational collections illustrating how fossils may be preserved within hard sedimentary or silica-rich rock.

The specimen can be displayed as part of a fossil cabinet, geological shelf or classroom collection. Its interest lies in the combination of fossil identification, Cretaceous age, Grey Chalk Subgroup association and Dorset locality. It provides a tangible example of how ancient marine life can remain preserved within geological material formed millions of years ago.

Collection and Preparation

Your specimen was discovered by our own team members, Alister and Alison, and has been cleaned, prepped and treated by Alison.

The photograph shows the actual specimen you will receive.

Sizing and Presentation

Full sizing is shown in the photographs.

The photographs are intended to show the specimen’s appearance, visible fossil features and presentation clearly. As a natural geological item, the character of the flint and the preserved fossil detail form part of its individual appeal. This specimen is suitable for collectors who value authentic British fossil material and locality-linked geological examples.

Certificate of Authenticity

This Fossil is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

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