Description
Genuine Rhynchonellid Brachiopod Fossil from the Cotswolds of Gloucestershire
This genuine Rhynchonellid brachiopod fossil is a beautifully preserved marine invertebrate specimen originating from the Inferior Oolite Group of the Cotswolds, Gloucestershire, United Kingdom. Dating to the Bajocian stage of the Middle Jurassic period, approximately 170 million years ago, this fossil represents marine life from a time when warm shallow seas covered much of southern Britain during the Jurassic Era.
The specimen shown in the photographs is the exact fossil you will receive. Carefully selected for its preservation, shell detail and natural display appeal, this authentic brachiopod fossil captures the intricate form and structure of one of the most characteristic marine organisms found within the classic Jurassic limestones of the Cotswolds.
This fossil includes a Certificate of Authenticity lifetime guarantee generic card confirming the specimen is 100% genuine.
Full sizing please see photo.
About Rhynchonellid Brachiopods
Rhynchonellid brachiopods belong to the order Rhynchonellida, a long-lived and highly successful group of marine invertebrates that flourished throughout much of the Paleozoic and Mesozoic eras. Although superficially similar to clams, brachiopods belong to an entirely different biological lineage and possess unique internal anatomy and shell symmetry.
Rhynchonellids are especially recognised for their sharply folded shells, strong ribbing and pronounced beak-like profile. These marine organisms lived attached to the seabed using a fleshy pedicle and fed by filtering microscopic nutrients from seawater using a specialised feeding organ called a lophophore.
The shell of a rhynchonellid typically consists of two calcitic valves with distinctive radiating ribs and deep folds that strengthened the shell structure while also helping channel water flow during feeding.
This specimen preserves the characteristic morphology associated with Jurassic rhynchonellid brachiopods, including the naturally ribbed shell ornamentation and curved valve structure typical of the group.
Inferior Oolite Group and Jurassic Marine Environment
The Inferior Oolite Group is one of Britain’s most important Middle Jurassic geological units and forms much of the famous limestone scenery of the Cotswolds. These sedimentary rocks were deposited within warm shallow tropical seas during the Bajocian stage of the Jurassic period.
The limestones consist largely of ooids, tiny spherical carbonate grains formed in shallow marine environments with active water movement. These seas supported abundant marine life including ammonites, brachiopods, bivalves, echinoids, corals and marine reptiles.
The fossil-bearing beds of the Cotswolds are internationally recognised for their exceptional Jurassic fossils and have been studied extensively since the early development of British geology. Fossils from the Inferior Oolite provide valuable evidence for reconstructing Jurassic marine ecosystems and ancient environmental conditions.
Rhynchonellid brachiopods were common inhabitants of these carbonate seabeds and often fossilised exceptionally well within the fine-grained limestone sediments.
Natural Fossil Preservation
This fossil retains authentic natural preservation and has not been artificially replicated or reconstructed. The visible shell ribbing, mineralisation and surface texture formed naturally over millions of years through geological fossilisation processes.
The specimen displays genuine anatomical detail typical of Jurassic brachiopods, including preserved shell curvature and natural growth ornamentation. Variations in colour and texture are entirely natural and reflect the mineral-rich limestone environment in which the fossil formed.
Brachiopods from the Inferior Oolite are highly collectable due to their association with classic British Jurassic localities and their attractive preservation within golden Jurassic limestone.
Scientific and Collectable Importance
Rhynchonellid brachiopods are important fossils used by palaeontologists to study marine biodiversity, evolutionary trends and palaeoenvironmental conditions throughout the Jurassic period. Their widespread distribution and recognisable shell morphology make them valuable fossils for geological correlation and palaeontological research.
The Inferior Oolite Group of Gloucestershire is historically important in British geology and remains one of the country’s most celebrated Jurassic fossil formations. Fossils from these deposits are highly valued by collectors and researchers alike.
This specimen is ideal for collectors of brachiopod fossils, Jurassic fossils, British fossils, marine invertebrates, Cotswold fossils and authentic prehistoric natural history specimens.
Certificate of Authenticity
Included with the fossil is a Certificate of Authenticity lifetime guarantee generic card confirming that the specimen is genuine. The photographs provided show the exact fossil you will receive, allowing collectors and buyers to purchase with complete confidence.
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