Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.
Grossouvria sulcifera Fossil Ammonite – Callovian – Jurassic – Tulear, Madagascar – Genuine with Certificate
£14.40
This listing features a beautiful fossil ammonite of the species Grossouvria sulcifera, a distinctive and elegant cephalopod from the Callovian stage of the Middle Jurassic, discovered near Tulear, Madagascar. It is a stunning natural specimen, displaying the classic features of the genus, and offers collectors and enthusiasts a piece of genuine prehistoric marine life.
Fossil Type: Ammonite (extinct marine cephalopod mollusc)
Species: Grossouvria sulcifera
Geological Period: Jurassic
Geological Stage: Callovian (~164 to 161 million years ago)
Formation: Likely from limestone/marl beds associated with the Callovian marine shelf environment
Scientific and Geological Information:
Order: Ammonitida
Superfamily: Perisphinctoidea
Family: Perisphinctidae
Morphological Features:
Typically planispiral shell, moderately involute with clear ribbing
Fine primary ribs that bifurcate mid-flank into broader secondaries
A sulcate (grooved) ventral keel often present – giving sulcifera its name
Excellent symmetry and spiral structure often preserved in Madagascan examples
Depositional Environment:
Shallow marine shelf, warm Tethyan sea margin
Deposits rich in marine invertebrates indicating high biodiversity and excellent preservation conditions
Notable:
Fossils from Tulear are known for their preservation and aesthetic appeal, often showing beautiful mineralisation
Madagascan ammonites are globally popular due to their high-quality preservation and decorative potential
Biozone:
Typically aligned with Erymnoceras and Reineckeia ammonite zones of the Callovian
Formal Identification:
Grossouvria sulcifera has been described in 19th-century European monographs and formalised within the Perisphinctidae family in various Jurassic systematics
Why This Fossil is Special:
Originates from one of the most iconic fossil localities in the world – Tulear, Madagascar
Excellent natural preservation with clear ribbing and potentially aesthetic mineralisation
A superb piece for display, teaching, or inclusion in any curated fossil collection
A scientifically recognised species that contributes to understanding Jurassic marine biostratigraphy
Additional Info:
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Scale Rule Squares / Cube = 1cm: For full sizing, please refer to the listing photo
Each fossil is hand-selected and photographed – the specimen shown is the exact one you will receive
This listing features a beautiful fossil ammonite of the species Grossouvria sulcifera, a distinctive and elegant cephalopod from the Callovian stage of the Middle Jurassic, discovered near Tulear, Madagascar. It is a stunning natural specimen, displaying the classic features of the genus, and offers collectors and enthusiasts a piece of genuine prehistoric marine life.
Fossil Type: Ammonite (extinct marine cephalopod mollusc)
Species: Grossouvria sulcifera
Geological Period: Jurassic
Geological Stage: Callovian (~164 to 161 million years ago)
Formation: Likely from limestone/marl beds associated with the Callovian marine shelf environment
Scientific and Geological Information:
Order: Ammonitida
Superfamily: Perisphinctoidea
Family: Perisphinctidae
Morphological Features:
Typically planispiral shell, moderately involute with clear ribbing
Fine primary ribs that bifurcate mid-flank into broader secondaries
A sulcate (grooved) ventral keel often present – giving sulcifera its name
Excellent symmetry and spiral structure often preserved in Madagascan examples
Depositional Environment:
Shallow marine shelf, warm Tethyan sea margin
Deposits rich in marine invertebrates indicating high biodiversity and excellent preservation conditions
Notable:
Fossils from Tulear are known for their preservation and aesthetic appeal, often showing beautiful mineralisation
Madagascan ammonites are globally popular due to their high-quality preservation and decorative potential
Biozone:
Typically aligned with Erymnoceras and Reineckeia ammonite zones of the Callovian
Formal Identification:
Grossouvria sulcifera has been described in 19th-century European monographs and formalised within the Perisphinctidae family in various Jurassic systematics
Why This Fossil is Special:
Originates from one of the most iconic fossil localities in the world – Tulear, Madagascar
Excellent natural preservation with clear ribbing and potentially aesthetic mineralisation
A superb piece for display, teaching, or inclusion in any curated fossil collection
A scientifically recognised species that contributes to understanding Jurassic marine biostratigraphy
Additional Info:
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Scale Rule Squares / Cube = 1cm: For full sizing, please refer to the listing photo
Each fossil is hand-selected and photographed – the specimen shown is the exact one you will receive
Additional information
Era
Jurassic
Origin
Madagascar
Jurassic Information
The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.
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