This listing features a genuine Jurassic bivalve fossil, professionally polished to enhance natural structure and visual detail, and sourced from Madagascar. The fossil has been carefully chosen for preservation quality, symmetry, and overall aesthetic appeal. The photographs show the actual specimen you will receive, ensuring complete transparency and confidence when purchasing.
The specimen is supplied with a Certificate of Authenticity, including a lifetime guarantee of genuineness, provided on a generic authenticity card. This confirms the fossil’s natural origin and makes it a secure addition to any fossil collection, educational display, or decorative setting.
This bivalve dates to the Jurassic Period, approximately 201 to 145 million years ago, a time when Madagascar formed part of the southern supercontinent Gondwana and was covered by warm, shallow seas. These marine environments supported rich and diverse invertebrate life, including abundant bivalves that thrived on or within soft seafloor sediments.
Jurassic marine deposits from Madagascar are well known for producing well-preserved fossils, often retaining strong shell detail due to favourable burial conditions and mineral replacement during fossilisation.
Bivalves are marine molluscs characterised by a two-part hinged shell, enclosing a soft-bodied organism adapted for filter feeding or shallow burrowing. These organisms played a vital ecological role in Jurassic seas, contributing to nutrient cycling and forming part of the base of the marine food web.
The fossil preserves the original shell form, including valve outline and growth structure, allowing clear interpretation of its biological origin. While species-level identification can vary depending on preservation and locality, Jurassic bivalves from Madagascar are typically associated with shallow marine shelf environments.
This specimen displays classic bivalve morphology, including symmetrical or near-symmetrical valves and visible growth lines formed during the organism’s life. The polishing process has been carefully applied to reveal internal shell structure and natural colour variation while preserving the fossil’s integrity.
Polishing enhances contrast between fossil material and surrounding matrix, making anatomical features easier to observe. The fossil retains strong definition, making it suitable for both scientific interest and decorative display.
During the Jurassic, this bivalve lived in a shallow marine depositional environment, likely on sandy or muddy seabeds with stable conditions. After death, the shell was rapidly buried by sediment, protecting it from scavenging and physical damage.
Over millions of years, original shell material was mineralised or replaced, turning the shell into stone while preserving its original form. These conditions are responsible for the high-quality fossils for which Madagascar is internationally recognised.
Polished Jurassic bivalve fossils from Madagascar are popular with collectors due to their combination of ancient age, clear morphology, and refined presentation. This specimen is ideal for fossil cabinets, desks, shelves, or educational collections, where its polished surface allows details to be appreciated without magnification.
Full sizing details are provided in the photographs. As a carefully selected, genuine Jurassic fossil supplied with a Certificate of Authenticity and lifetime guarantee, this polished bivalve represents a tangible connection to ancient seas and is a visually striking, scientifically meaningful addition to any fossil collection.