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Rare Clambites striocostatus Fossil Ammonite – Middle Oxfordian, Upper Jurassic, Grafenberg Bavaria Germany – Genuine + COA

Rare Clambites striocostatus Fossil Ammonite – Middle Oxfordian, Upper Jurassic, Grafenberg Bavaria Germany – Genuine + COA

£36.00

A rare Clambites striocostatus Fossil Ammonite, from the Middle Oxfordian Stage of the Upper Jurassic, collected at Grafenberg, Bavaria, Germany. This ammonite is a fine example of the genus Clambites, noted for its distinct ribbing and important role in Jurassic ammonite stratigraphy. The specimen shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Clambites striocostatus
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Perisphinctidae

Geological Context:

  • Period: Jurassic
  • Epoch/Stage: Upper Jurassic – Middle Oxfordian (approx. 160 to 157.3 million years ago)
  • Biozone: Associated with Transversarium Zone ammonite faunas, widely used in Oxfordian stratigraphy
  • Formation: Oxfordian limestones of Bavaria
  • Depositional Environment: Marine carbonate platform with fine limestone sedimentation, providing excellent preservation conditions

Locality:

  • Region: Grafenberg, Bavaria, Germany

Morphology & Features:

  • Evolute shell with moderately wide umbilicus
  • Fine, dense ribbing extending across the flanks and over the venter
  • Whorl structure moderately compressed with graceful coiling
  • Diagnostic ribbing pattern characteristic of Clambites striocostatus

Scientific Notes:

  • Clambites striocostatus was first described during detailed 19th-century studies of Jurassic ammonite faunas in Germany
  • The genus Clambites is significant for biostratigraphic correlation within the Oxfordian Stage of the Upper Jurassic

Notable Details:

  • Excellent preservation with detailed ribbing and shell form
  • Rare German ammonite from a historically important fossil locality
  • 100% genuine, natural fossil – no restoration
  • Scale Reference: Each square or cube in the photo = 1cm. Please see images for accurate sizing

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Every purchase includes a Certificate of Authenticity. The fossil shown is the exact specimen you will receive.

 

This Clambites striocostatus ammonite is a rare and scientifically valuable fossil from the Middle Oxfordian of Bavaria – an excellent choice for collectors, researchers, or natural history displays.

 

(Actual as seen)

Only 1 left in stock

SKU: UF4313 Category:

Description

A rare Clambites striocostatus Fossil Ammonite, from the Middle Oxfordian Stage of the Upper Jurassic, collected at Grafenberg, Bavaria, Germany. This ammonite is a fine example of the genus Clambites, noted for its distinct ribbing and important role in Jurassic ammonite stratigraphy. The specimen shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Clambites striocostatus
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Perisphinctidae

Geological Context:

  • Period: Jurassic
  • Epoch/Stage: Upper Jurassic – Middle Oxfordian (approx. 160 to 157.3 million years ago)
  • Biozone: Associated with Transversarium Zone ammonite faunas, widely used in Oxfordian stratigraphy
  • Formation: Oxfordian limestones of Bavaria
  • Depositional Environment: Marine carbonate platform with fine limestone sedimentation, providing excellent preservation conditions

Locality:

  • Region: Grafenberg, Bavaria, Germany

Morphology & Features:

  • Evolute shell with moderately wide umbilicus
  • Fine, dense ribbing extending across the flanks and over the venter
  • Whorl structure moderately compressed with graceful coiling
  • Diagnostic ribbing pattern characteristic of Clambites striocostatus

Scientific Notes:

  • Clambites striocostatus was first described during detailed 19th-century studies of Jurassic ammonite faunas in Germany
  • The genus Clambites is significant for biostratigraphic correlation within the Oxfordian Stage of the Upper Jurassic

Notable Details:

  • Excellent preservation with detailed ribbing and shell form
  • Rare German ammonite from a historically important fossil locality
  • 100% genuine, natural fossil – no restoration
  • Scale Reference: Each square or cube in the photo = 1cm. Please see images for accurate sizing

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Every purchase includes a Certificate of Authenticity. The fossil shown is the exact specimen you will receive.

 

This Clambites striocostatus ammonite is a rare and scientifically valuable fossil from the Middle Oxfordian of Bavaria – an excellent choice for collectors, researchers, or natural history displays.

 

Additional information

Era

Jurassic
Origin

Germany

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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