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.

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RARE Hildaites surtepentum Fossil Ammonite | Upper Toarcian Jurassic | Ilminster UK | Authentic Specimen

£43.20

A beautifully preserved and rare specimen of the ammonite Hildaites surtepentum, from the Upper Toarcian Stage of the Jurassic Period, discovered in the well-known fossil-bearing layers near Ilminster, Somerset, United Kingdom. This is a genuine collector-grade fossil showcasing distinctive features of the genus Hildaites, a valuable addition for any serious collector, researcher, or educational display.

You will receive the exact fossil shown in the photographs. A 1cm scale cube is included in the images for full size reference. Please review the photos for detailed views and dimensions.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species: Hildaites surtepentum (formally described, attribution likely to Buckman or contemporaries depending on revision)
  • Geological Period: Jurassic
  • Stage: Upper Toarcian (~182 to 174 million years ago)
  • Location: Ilminster, Somerset, England, UK
  • Depositional Environment: Marine shelf in a shallow epicontinental sea, rich in fine-grained silts and clays
  • Order: Ammonitida
  • Superfamily: Hildoceratoidea
  • Family: Hildoceratidae
  • Zone (Inferred): Possibly within the Levesquei or Bifrons Zones, which host many Hildaites species in Ilminster strata

 

Morphological Features:

  • Evolute coiling with moderately wide umbilicus
  • Strong, sinuous ribbing that bifurcates mid-flank
  • Smooth ventrolateral shoulder leading to a rounded venter
  • Known for distinctive shell ornamentation and precise rib spacing

 

Notable Points:

  • Hildaites species are stratigraphically important and widely used in Jurassic ammonite biostratigraphy
  • Fossils from Ilminster are often highly sought after due to the fine detail preserved in the Lower Lias clays and silts
  • Rarely offered species, especially with excellent preservation like this example

 

Why This Fossil is a Collector’s Piece:

  • Rare Upper Toarcian ammonite from a renowned UK site
  • Detailed ribbing and classic Hildaites features
  • Excellent for study, display, or stratigraphic reference
  • Supplied with a Certificate of Authenticity
  • 100% genuine and ethically sourced

 

(Actual as seen)

Only 1 left in stock

SKU: UF4485 Category:

Description

A beautifully preserved and rare specimen of the ammonite Hildaites surtepentum, from the Upper Toarcian Stage of the Jurassic Period, discovered in the well-known fossil-bearing layers near Ilminster, Somerset, United Kingdom. This is a genuine collector-grade fossil showcasing distinctive features of the genus Hildaites, a valuable addition for any serious collector, researcher, or educational display.

You will receive the exact fossil shown in the photographs. A 1cm scale cube is included in the images for full size reference. Please review the photos for detailed views and dimensions.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species: Hildaites surtepentum (formally described, attribution likely to Buckman or contemporaries depending on revision)
  • Geological Period: Jurassic
  • Stage: Upper Toarcian (~182 to 174 million years ago)
  • Location: Ilminster, Somerset, England, UK
  • Depositional Environment: Marine shelf in a shallow epicontinental sea, rich in fine-grained silts and clays
  • Order: Ammonitida
  • Superfamily: Hildoceratoidea
  • Family: Hildoceratidae
  • Zone (Inferred): Possibly within the Levesquei or Bifrons Zones, which host many Hildaites species in Ilminster strata

 

Morphological Features:

  • Evolute coiling with moderately wide umbilicus
  • Strong, sinuous ribbing that bifurcates mid-flank
  • Smooth ventrolateral shoulder leading to a rounded venter
  • Known for distinctive shell ornamentation and precise rib spacing

 

Notable Points:

  • Hildaites species are stratigraphically important and widely used in Jurassic ammonite biostratigraphy
  • Fossils from Ilminster are often highly sought after due to the fine detail preserved in the Lower Lias clays and silts
  • Rarely offered species, especially with excellent preservation like this example

 

Why This Fossil is a Collector’s Piece:

  • Rare Upper Toarcian ammonite from a renowned UK site
  • Detailed ribbing and classic Hildaites features
  • Excellent for study, display, or stratigraphic reference
  • Supplied with a Certificate of Authenticity
  • 100% genuine and ethically sourced

 

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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