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RARE Fossil Ammonite Abbasites abbas – Upper Bajocian, Jurassic – Switzerland – Genuine Specimen with Certificate

RARE Fossil Ammonite Abbasites abbas – Upper Bajocian, Jurassic – Switzerland – Genuine Specimen with Certificate

Original price was: £14.40.Current price is: £12.96.

RARE Fossil Ammonite – Abbasites abbas

Upper Bajocian Stage, Middle Jurassic – Switzerland

This listing features an exceptional and rare ammonite fossil of the species Abbasites abbas, discovered in Jurassic deposits from Switzerland, dated to the Upper Bajocian stage of the Middle Jurassic. An uncommon genus within the broader Stephanoceratoidea superfamily, this fossil is a scientifically valuable and aesthetically striking example of mid-Mesozoic marine life.

Geological and Palaeontological Context:

  • Scientific Name: Abbasites abbas
  • Geological Period: Jurassic
  • Stage: Upper Bajocian (approx. 168–166 million years ago)
  • Location Found: Switzerland
  • Depositional Environment: Likely from a relatively deep marine shelf or basin setting, characteristic of the Tethyan Realm. These environments were rich in nektonic and benthic fauna, including ammonites, belemnites, and brachiopods.
  • Lithology: The host strata generally consist of marls and finely laminated limestones, conducive to excellent fossil preservation.

Taxonomy:

  • Kingdom: Animalia
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Sphaeroceratidae
  • Genus: Abbasites
  • Species: Abbasites abbas
  • Identification Authority: Formally described by Parona & Bonarelli in 1896

Morphology & Notable Features:

  • Abbasites abbas is distinguished by its moderately involute shell, strongly ribbed whorls, and rounded venter.
  • The ribbing is typically radial, bifurcating from the umbilical shoulder, and may feature tubercles or faint nodules depending on preservation.
  • The specimen exhibits clear growth lines and preserved suture patterns, making it useful for comparative study and zonal correlation.

Biozone Information:

Abbasites abbas is associated with ammonite zones within the upper part of the Bajocian, particularly the Parkinsoni Zone. It holds zonal significance in the Middle Jurassic biostratigraphic framework used in Tethyan and sub-Tethyan Europe.

Collector & Scientific Value:

Specimens of Abbasites abbas are relatively rare in the commercial fossil market, especially in such good condition. Their use in stratigraphic correlation and palaeobiogeography make them important reference fossils. Swiss localities are particularly known for yielding high-quality Jurassic ammonites with fine detail.

Specimen Details:

  • Scale Reference: Scale cube in image = 1 cm
  • Authenticity: 100% Genuine Fossil
  • Certificate: Includes Certificate of Authenticity
  • Condition: Professionally prepared, with natural preservation of morphological features
  • Photo: The fossil in the photo is the exact one you will receive

Summary:

This is a rare and finely preserved example of Abbasites abbas, an ammonite from the Upper Bajocian of Switzerland. It offers outstanding scientific and display value. A truly special addition for collectors of European Jurassic ammonites and palaeontological rarities.

(Actual as seen)

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SKU: SF0350 Category:

Description

RARE Fossil Ammonite – Abbasites abbas

Upper Bajocian Stage, Middle Jurassic – Switzerland

This listing features an exceptional and rare ammonite fossil of the species Abbasites abbas, discovered in Jurassic deposits from Switzerland, dated to the Upper Bajocian stage of the Middle Jurassic. An uncommon genus within the broader Stephanoceratoidea superfamily, this fossil is a scientifically valuable and aesthetically striking example of mid-Mesozoic marine life.

Geological and Palaeontological Context:

  • Scientific Name: Abbasites abbas
  • Geological Period: Jurassic
  • Stage: Upper Bajocian (approx. 168–166 million years ago)
  • Location Found: Switzerland
  • Depositional Environment: Likely from a relatively deep marine shelf or basin setting, characteristic of the Tethyan Realm. These environments were rich in nektonic and benthic fauna, including ammonites, belemnites, and brachiopods.
  • Lithology: The host strata generally consist of marls and finely laminated limestones, conducive to excellent fossil preservation.

Taxonomy:

  • Kingdom: Animalia
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Sphaeroceratidae
  • Genus: Abbasites
  • Species: Abbasites abbas
  • Identification Authority: Formally described by Parona & Bonarelli in 1896

Morphology & Notable Features:

  • Abbasites abbas is distinguished by its moderately involute shell, strongly ribbed whorls, and rounded venter.
  • The ribbing is typically radial, bifurcating from the umbilical shoulder, and may feature tubercles or faint nodules depending on preservation.
  • The specimen exhibits clear growth lines and preserved suture patterns, making it useful for comparative study and zonal correlation.

Biozone Information:

Abbasites abbas is associated with ammonite zones within the upper part of the Bajocian, particularly the Parkinsoni Zone. It holds zonal significance in the Middle Jurassic biostratigraphic framework used in Tethyan and sub-Tethyan Europe.

Collector & Scientific Value:

Specimens of Abbasites abbas are relatively rare in the commercial fossil market, especially in such good condition. Their use in stratigraphic correlation and palaeobiogeography make them important reference fossils. Swiss localities are particularly known for yielding high-quality Jurassic ammonites with fine detail.

Specimen Details:

  • Scale Reference: Scale cube in image = 1 cm
  • Authenticity: 100% Genuine Fossil
  • Certificate: Includes Certificate of Authenticity
  • Condition: Professionally prepared, with natural preservation of morphological features
  • Photo: The fossil in the photo is the exact one you will receive

Summary:

This is a rare and finely preserved example of Abbasites abbas, an ammonite from the Upper Bajocian of Switzerland. It offers outstanding scientific and display value. A truly special addition for collectors of European Jurassic ammonites and palaeontological rarities.

Additional information

Era

Jurassic

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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