Podagrosites pseudogrundoni Ammonite Fossil Lower Jurassic Toarcian France Piece | Rare Genuine French Collector Specimen

Description

Genuine Podagrosites pseudogrundoni Ammonite Fossil

This carefully selected fossil is a genuine Podagrosites pseudogrundoni ammonite from France. It dates to the Toarcian stage, the final part of the Lower Jurassic. The photographs show the actual specimen you will receive, allowing its natural form, preservation, colour, matrix and visible fossil detail to be examined before purchase. Please refer to the photographs for full sizing and scale.

Lower Jurassic Toarcian Geology

The Toarcian Age lasted from approximately 182 to 174 million years ago. During this interval, much of France and western Europe lay beneath marine waters connected to the expanding Tethys Ocean. Mud, carbonate-rich sediment and other material accumulated on seabeds and in local basins, preserving ammonites, belemnites, bivalves and diverse marine organisms.

The Toarcian was a time of significant environmental change, including variations in sea level, climate and ocean oxygenation. These changes influenced marine ecosystems and the sedimentary record. Ammonites diversified rapidly through the interval, making them particularly valuable for recognising biozones and correlating rock layers between different regions.

Podagrosites pseudogrundoni

Podagrosites is an extinct ammonite genus within the order Ammonitida. Ammonites were marine cephalopods related to living squid, octopus and nautilus. Their coiled shells were divided internally into chambers. The animal occupied the final body chamber, while sealed earlier chambers helped regulate buoyancy.

Identification of Podagrosites species considers shell coiling, whorl proportions, umbilical width, ribbing and the form of the outer margin. Podagrosites pseudogrundoni is a named Toarcian ammonite and contributes to understanding the succession of late Early Jurassic cephalopod faunas. Its species identification gives this specimen scientific interest beyond its visual appeal.

Fossil preservation varies naturally. A specimen may retain original shell material, mineral replacement, an external impression or an internal mould formed when sediment entered the shell before burial. Matrix, worn surfaces, fractures and irregular edges record fossilisation, compaction and later geological exposure. These authentic features are part of the specimen rather than manufactured defects.

French Jurassic Marine Fossils

France contains extensive Jurassic sedimentary basins with internationally important ammonite faunas. Marine deposits occur from Normandy and the Paris Basin to Burgundy, the Alps and southern regions formerly bordering the Tethys Ocean. Fossils from these successions allow palaeontologists to compare French strata with equivalent rocks across Britain and continental Europe.

This Podagrosites ammonite represents an extinct cephalopod that lived in a Jurassic sea more than 170 million years ago. After death, burial in seabed sediment protected part of its shell long enough for mineralisation and fossilisation. Later uplift and erosion exposed the rock containing this record of ancient marine life.

Actual Specimen for Collection or Display

You will receive the exact fossil shown in the photographs. Its named species, Toarcian age and French provenance make it suitable for a specialist ammonite collection, geological study, educational display, natural-history cabinet or a distinctive fossil gift. The photographs are the definitive guide to this individual specimen’s condition and appearance.

Certificate of Authenticity

The fossil includes a generic Certificate of Authenticity card carrying a lifetime guarantee of authenticity. Handle it carefully and avoid soaking, harsh cleaning chemicals, excessive humidity and sudden temperature changes. Display it on a stable support so natural edges, matrix and any exposed shell ornament remain protected.