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.

FREE UK DELIVERY - Save up to 60%

Rare 3.5" Sigaloceras calloviense Fossil Ammonite, Jurassic, Lower Callovian, UK, Genuine COA
Rare 3.5" Sigaloceras calloviense Fossil Ammonite, Jurassic, Lower Callovian, UK, Genuine COA - Image 2

Rare 3.5″ Sigaloceras calloviense Fossil Ammonite, Jurassic, Lower Callovian, UK, Genuine COA

£60.00

This listing is for a rare and striking 3.5″ Fossil Ammonite specimen of Sigaloceras calloviense from the Lower Callovian Stage of the Jurassic Period, expertly preserved and sourced from Waterpark, Ashton Keynes, United Kingdom. The fossil shown in the photograph is the exact specimen you will receive, ensuring transparency and trust.

Scale rule and cube are provided in the images for accurate measurement — each square/cube = 1cm. Full sizing and views of the fossil are shown in the photos.

 

Key Geological and Scientific Information:

  • Species: Sigaloceras calloviense
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Geological Stage: Lower Callovian (Middle Jurassic)
  • Location: Waterpark, Ashton Keynes, Wiltshire, England, UK
  • Approximate Age: ~164 million years ago
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Sigaloceratidae

 

Morphology Features: This specimen of Sigaloceras calloviense exhibits the classic involute coiling typical of the genus, with fine ribbing and a moderately compressed shell profile. These features are characteristic of ammonites adapted to open marine conditions, and the detail is exceptionally well-preserved in this piece.

 

Depositional Environment: This ammonite comes from marine clay and limestone deposits associated with the Oxford Clay Formation, which represents a low-energy, offshore marine environment. These conditions allowed for exceptional preservation of marine fauna, including a diverse assemblage of ammonites.

 

Biozone & Zone Information: The Sigaloceras calloviense species defines the Calloviense Subzone of the Calloviense Zone, a key biozone used in the biostratigraphy of the Middle Jurassic in Europe.

 

Scientific Significance: Sigaloceras is an important index fossil for the Callovian Stage, used in correlation of Jurassic marine sediments across Europe. This genus is part of the evolutionary lineage that gives valuable insight into paleoenvironments and cephalopod development during the Jurassic.

 

Authenticity Guarantee: All of our fossils are 100% genuine specimens and are carefully selected for their scientific and aesthetic value. Each specimen comes with a Certificate of Authenticity.

 

Add this scientifically important and visually stunning ammonite to your collection today!

(Actual as seen)

Only 1 left in stock

SKU: UF4412 Category:

Description

This listing is for a rare and striking 3.5″ Fossil Ammonite specimen of Sigaloceras calloviense from the Lower Callovian Stage of the Jurassic Period, expertly preserved and sourced from Waterpark, Ashton Keynes, United Kingdom. The fossil shown in the photograph is the exact specimen you will receive, ensuring transparency and trust.

Scale rule and cube are provided in the images for accurate measurement — each square/cube = 1cm. Full sizing and views of the fossil are shown in the photos.

 

Key Geological and Scientific Information:

  • Species: Sigaloceras calloviense
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Geological Stage: Lower Callovian (Middle Jurassic)
  • Location: Waterpark, Ashton Keynes, Wiltshire, England, UK
  • Approximate Age: ~164 million years ago
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Sigaloceratidae

 

Morphology Features: This specimen of Sigaloceras calloviense exhibits the classic involute coiling typical of the genus, with fine ribbing and a moderately compressed shell profile. These features are characteristic of ammonites adapted to open marine conditions, and the detail is exceptionally well-preserved in this piece.

 

Depositional Environment: This ammonite comes from marine clay and limestone deposits associated with the Oxford Clay Formation, which represents a low-energy, offshore marine environment. These conditions allowed for exceptional preservation of marine fauna, including a diverse assemblage of ammonites.

 

Biozone & Zone Information: The Sigaloceras calloviense species defines the Calloviense Subzone of the Calloviense Zone, a key biozone used in the biostratigraphy of the Middle Jurassic in Europe.

 

Scientific Significance: Sigaloceras is an important index fossil for the Callovian Stage, used in correlation of Jurassic marine sediments across Europe. This genus is part of the evolutionary lineage that gives valuable insight into paleoenvironments and cephalopod development during the Jurassic.

 

Authenticity Guarantee: All of our fossils are 100% genuine specimens and are carefully selected for their scientific and aesthetic value. Each specimen comes with a Certificate of Authenticity.

 

Add this scientifically important and visually stunning ammonite to your collection today!

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.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Related products