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 Acanthodiscus radiatus Fossil Ammonite – Lower Hauterivian, Cretaceous, Apennines Italy – Genuine + COA

£60.00

A rare and scientifically important Acanthodiscus radiatus Fossil Ammonite, from the Lower Hauterivian Stage of the Cretaceous Period, collected in the Apennines, Italy. This elegant ammonite is a key index fossil for the Hauterivian, with finely ribbed ornamentation and distinctive morphology. The exact specimen shown in the photos is the one you will receive, supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Acanthodiscus radiatus
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Neocomitidae

Geological Context:

  • Period: Cretaceous
  • Epoch/Stage: Lower Cretaceous – Hauterivian (approx. 132.9 to 129.4 million years ago)
  • Biozone: Acanthodiscus radiatus Zone – the ammonite biozone that defines the base of the Hauterivian
  • Depositional Environment: Marine platform with limestones and marls, excellent for preservation of ammonites

Locality:

  • Region: Apennines, Italy
  • Formation: Hauterivian limestone and marl successions of the Italian Apennines

Morphology & Features:

  • Moderately evolute shell with wide umbilicus
  • Fine, regular ribbing extending across the flanks and venter
  • Flattened, discoidal whorls with symmetrical ornamentation
  • Diagnostic ribbing pattern characteristic of Acanthodiscus radiatus

Scientific Notes:

  • Acanthodiscus radiatus was first described by Brongniart (1822)
  • One of the most important index fossils of the Lower Cretaceous, used globally to define the Hauterivian Stage

Notable Details:

  • Superb preservation with clear ribbing and whorl structure
  • Natural, unrestored specimen
  • Scale Reference: Each square or cube = 1cm. Please see the photo for accurate size

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

 

This Acanthodiscus radiatus ammonite is a rare and scientifically valuable specimen, perfect for fossil collectors, educational purposes, or display.

(Actual as seen)

Out of stock

SKU: UF4288 Category:

Description

A rare and scientifically important Acanthodiscus radiatus Fossil Ammonite, from the Lower Hauterivian Stage of the Cretaceous Period, collected in the Apennines, Italy. This elegant ammonite is a key index fossil for the Hauterivian, with finely ribbed ornamentation and distinctive morphology. The exact specimen shown in the photos is the one you will receive, supplied with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Acanthodiscus radiatus
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Neocomitidae

Geological Context:

  • Period: Cretaceous
  • Epoch/Stage: Lower Cretaceous – Hauterivian (approx. 132.9 to 129.4 million years ago)
  • Biozone: Acanthodiscus radiatus Zone – the ammonite biozone that defines the base of the Hauterivian
  • Depositional Environment: Marine platform with limestones and marls, excellent for preservation of ammonites

Locality:

  • Region: Apennines, Italy
  • Formation: Hauterivian limestone and marl successions of the Italian Apennines

Morphology & Features:

  • Moderately evolute shell with wide umbilicus
  • Fine, regular ribbing extending across the flanks and venter
  • Flattened, discoidal whorls with symmetrical ornamentation
  • Diagnostic ribbing pattern characteristic of Acanthodiscus radiatus

Scientific Notes:

  • Acanthodiscus radiatus was first described by Brongniart (1822)
  • One of the most important index fossils of the Lower Cretaceous, used globally to define the Hauterivian Stage

Notable Details:

  • Superb preservation with clear ribbing and whorl structure
  • Natural, unrestored specimen
  • Scale Reference: Each square or cube = 1cm. Please see the photo for accurate size

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

 

This Acanthodiscus radiatus ammonite is a rare and scientifically valuable specimen, perfect for fossil collectors, educational purposes, or display.

Additional information

Era

Cretaceous

Origin

Italy

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

Reviews

There are no reviews yet.

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