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RARE Stephanoceras zieterii Fossil Ammonite – Bajocian, Jurassic, Milborne Wick Dorset UK – Genuine Specimen COA
RARE Stephanoceras zieterii Fossil Ammonite – Bajocian, Jurassic, Milborne Wick Dorset UK – Genuine Specimen COA - Image 2
RARE Stephanoceras zieterii Fossil Ammonite – Bajocian, Jurassic, Milborne Wick Dorset UK – Genuine Specimen COA - Image 3

RARE Stephanoceras zieterii Fossil Ammonite – Bajocian, Jurassic, Milborne Wick Dorset UK – Genuine Specimen COA

£132.00

This listing presents an exquisite and rare fossil specimen of Stephanoceras zieterii, a large and robust ammonite from the Bajocian stage of the Jurassic Period. Discovered in the well-known fossil-rich beds of Milborne Wick, Dorset, United Kingdom, this fossil offers exceptional preservation of classic Stephanoceratid morphology and hails from the prestigious Alice Purnell Collection.

Geological Context:

  • Species: Stephanoceras zieterii
  • Geological Period: Jurassic
  • Stage: Bajocian (~170.3 – 168.3 million years ago)
  • Formation: Inferior Oolite Group, possibly correlating with the Zigzag or Discites Zones
  • Locality: Milborne Wick, Dorset, UK
  • Depositional Environment: Shallow marine carbonate platform with periodic storm influence, producing well-sorted oolitic limestones and marl beds.

Taxonomic Classification:

  • Family: Stephanoceratidae
  • Superfamily: Stephanoceratoidea
  • Order: Ammonitida

Morphological Features: This fossil exemplifies the iconic Stephanoceras shell form — evolute coiling, broad umbilicus, and strong, bifurcating ribs. These ribs originate from the umbilical shoulder and extend over the flanks, often forming raised tubercles at the ventrolateral edge. The zieterii species is known for its pronounced ribbing and overall robustness. These defensive features may have aided buoyancy and protection from marine predators.

Notability and Scientific Significance: Stephanoceras zieterii is an important index fossil used in dating Middle Jurassic strata. It is biostratigraphically valuable in correlating Bajocian sequences across Europe. Specimens of this calibre from Milborne Wick are both scientifically important and increasingly rare due to limited accessibility.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Please refer to the photo for accurate sizing.
  • This is the actual fossil you will receive, individually selected and preserved.
  • From the distinguished Alice Purnell Collection.

This ammonite fossil makes an outstanding display piece for collectors, educators, or enthusiasts of paleontology and the rich Jurassic heritage of the UK. Don’t miss the opportunity to own a scientifically significant and visually stunning piece of natural history!

(Actual as seen)

Only 1 left in stock

SKU: AF1251 Category:

Description

This listing presents an exquisite and rare fossil specimen of Stephanoceras zieterii, a large and robust ammonite from the Bajocian stage of the Jurassic Period. Discovered in the well-known fossil-rich beds of Milborne Wick, Dorset, United Kingdom, this fossil offers exceptional preservation of classic Stephanoceratid morphology and hails from the prestigious Alice Purnell Collection.

Geological Context:

  • Species: Stephanoceras zieterii
  • Geological Period: Jurassic
  • Stage: Bajocian (~170.3 – 168.3 million years ago)
  • Formation: Inferior Oolite Group, possibly correlating with the Zigzag or Discites Zones
  • Locality: Milborne Wick, Dorset, UK
  • Depositional Environment: Shallow marine carbonate platform with periodic storm influence, producing well-sorted oolitic limestones and marl beds.

Taxonomic Classification:

  • Family: Stephanoceratidae
  • Superfamily: Stephanoceratoidea
  • Order: Ammonitida

Morphological Features: This fossil exemplifies the iconic Stephanoceras shell form — evolute coiling, broad umbilicus, and strong, bifurcating ribs. These ribs originate from the umbilical shoulder and extend over the flanks, often forming raised tubercles at the ventrolateral edge. The zieterii species is known for its pronounced ribbing and overall robustness. These defensive features may have aided buoyancy and protection from marine predators.

Notability and Scientific Significance: Stephanoceras zieterii is an important index fossil used in dating Middle Jurassic strata. It is biostratigraphically valuable in correlating Bajocian sequences across Europe. Specimens of this calibre from Milborne Wick are both scientifically important and increasingly rare due to limited accessibility.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Please refer to the photo for accurate sizing.
  • This is the actual fossil you will receive, individually selected and preserved.
  • From the distinguished Alice Purnell Collection.

This ammonite fossil makes an outstanding display piece for collectors, educators, or enthusiasts of paleontology and the rich Jurassic heritage of the UK. Don’t miss the opportunity to own a scientifically significant and visually stunning piece of natural history!

Additional information

Era

Jurassic
Origin

United Kingdom

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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