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Rare Fossil Ammonite Grossouvria kontkiewiczi Jurassic Callovian Vienne France | Authentic Fossil

Rare Fossil Ammonite Grossouvria kontkiewiczi Jurassic Callovian Vienne France | Authentic Fossil

Original price was: £18.00.Current price is: £16.20.

This listing presents a rare and scientifically notable fossil of Grossouvria kontkiewiczi, a distinctive ammonite species from the Middle Callovian stage of the Jurassic period. Collected from the renowned fossil-bearing marine limestones near Vienne, France, this specimen represents a lesser-seen but important genus within the Perisphinctoid lineage.

Geological Context:

  • Fossil Type: Ammonite (Extinct marine cephalopod, related to squid and cuttlefish)
  • Species: Grossouvria kontkiewiczi (Kutek & Wierzbowski, 1978)
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Tulitidae (sometimes placed in Grossouviidae)
  • Geological Stage: Middle Callovian (c. 165.3 to 161.2 million years ago)
  • Formation: Marine limestone deposits of the Paris Basin margin
  • Depositional Environment: Warm, shallow marine shelf with rich carbonate accumulation

Grossouvria species are known for their robust and often finely ornamented shells. Though relatively rare in collections, they offer important insight into Jurassic ammonite evolutionary pathways and biogeographic distribution.

Morphology & Notable Features:

  • Typically involute shell with rounded whorls
  • Fine, dense ribbing with weak bifurcation or uniform ornamentation
  • Rounded venter without pronounced keel
  • Complex suture lines reflecting the typical structure of Stephanoceratoidea
  • A rare and under-represented genus in the fossil trade, valued by collectors and researchers alike

Biozone Association: Grossouvria kontkiewiczi occurs within the Athleta Zone of the Middle Callovian, used for biostratigraphic subdivision of mid-Jurassic marine strata in France and surrounding regions.

Specimen Details:

  • Origin: Vienne, France
  • Age: Middle Callovian Stage, Jurassic (~163 million years old)
  • Scale: Scale rule square/cube = 1cm. Please refer to the photo for precise sizing
  • Condition: Selected for strong preservation and completeness
  • Photo: The item shown is the exact specimen you will receive

Certification & Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is carefully selected and verified for scientific accuracy and display quality.

This rare Grossouvria kontkiewiczi ammonite offers a unique opportunity to add an uncommon and scientifically significant species to your fossil collection. Ideal for educational display, palaeontological interest, or natural history decor.

(Actual as seen)

Only 1 left in stock

SKU: SF0712 Category:

Description

This listing presents a rare and scientifically notable fossil of Grossouvria kontkiewiczi, a distinctive ammonite species from the Middle Callovian stage of the Jurassic period. Collected from the renowned fossil-bearing marine limestones near Vienne, France, this specimen represents a lesser-seen but important genus within the Perisphinctoid lineage.

Geological Context:

  • Fossil Type: Ammonite (Extinct marine cephalopod, related to squid and cuttlefish)
  • Species: Grossouvria kontkiewiczi (Kutek & Wierzbowski, 1978)
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Tulitidae (sometimes placed in Grossouviidae)
  • Geological Stage: Middle Callovian (c. 165.3 to 161.2 million years ago)
  • Formation: Marine limestone deposits of the Paris Basin margin
  • Depositional Environment: Warm, shallow marine shelf with rich carbonate accumulation

Grossouvria species are known for their robust and often finely ornamented shells. Though relatively rare in collections, they offer important insight into Jurassic ammonite evolutionary pathways and biogeographic distribution.

Morphology & Notable Features:

  • Typically involute shell with rounded whorls
  • Fine, dense ribbing with weak bifurcation or uniform ornamentation
  • Rounded venter without pronounced keel
  • Complex suture lines reflecting the typical structure of Stephanoceratoidea
  • A rare and under-represented genus in the fossil trade, valued by collectors and researchers alike

Biozone Association: Grossouvria kontkiewiczi occurs within the Athleta Zone of the Middle Callovian, used for biostratigraphic subdivision of mid-Jurassic marine strata in France and surrounding regions.

Specimen Details:

  • Origin: Vienne, France
  • Age: Middle Callovian Stage, Jurassic (~163 million years old)
  • Scale: Scale rule square/cube = 1cm. Please refer to the photo for precise sizing
  • Condition: Selected for strong preservation and completeness
  • Photo: The item shown is the exact specimen you will receive

Certification & Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is carefully selected and verified for scientific accuracy and display quality.

This rare Grossouvria kontkiewiczi ammonite offers a unique opportunity to add an uncommon and scientifically significant species to your fossil collection. Ideal for educational display, palaeontological interest, or natural history decor.

Additional information

Era

Jurassic
Origin

France

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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