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%

VERY RARE Fossil Heteromorph Ammonite HOPLOSCAPHITES NEBRASCENSIS Multi Block – Fox Hills Formation, Maastrichtian, Cretaceous: USA
VERY RARE Fossil Heteromorph Ammonite HOPLOSCAPHITES NEBRASCENSIS Multi Block – Fox Hills Formation, Maastrichtian, Cretaceous: USA - Image 2
VERY RARE Fossil Heteromorph Ammonite HOPLOSCAPHITES NEBRASCENSIS Multi Block – Fox Hills Formation, Maastrichtian, Cretaceous: USA - Image 3
VERY RARE Fossil Heteromorph Ammonite HOPLOSCAPHITES NEBRASCENSIS Multi Block – Fox Hills Formation, Maastrichtian, Cretaceous: USA - Image 4

VERY RARE Fossil Heteromorph Ammonite HOPLOSCAPHITES NEBRASCENSIS Multi Block – Fox Hills Formation, Maastrichtian, Cretaceous: USA

£240.00

Offered here is a VERY RARE and scientifically important multi-block fossil featuring the heteromorph ammonite Hoploscaphites nebrascensis, from the Fox Hills Formation, part of the Pierre Shale Group, South Dakota, USA. This formation preserves some of the last ammonite faunas before the end-Cretaceous mass extinction event.

Hoploscaphites nebrascensis belongs to the family Scaphitidae, superfamily Scaphitoidea, and order Ammonitida. As a heteromorph ammonite, it exhibits a shell partially uncoiled into a hooked shape, representing a significant evolutionary departure from the typical tightly coiled ammonite form. This morphology is often interpreted as an adaptation to a unique ecological niche within the shallow, epicontinental Western Interior Seaway.

Geological & Scientific Details:

  • Scientific Name: Hoploscaphites nebrascensis
  • Fossil Type: Heteromorph Ammonite (Multi Block)
  • Geological Period: Cretaceous
  • Stage: Maastrichtian (approx. 72–66 million years ago)
  • Formation: Fox Hills Formation (Pierre Shale Group)
  • Location Found: South Dakota, United States
  • Order: Ammonitida
  • Superfamily: Scaphitoidea
  • Family: Scaphitidae
  • Morphological Features: Partially uncoiled heteromorph shell with fine ribbing and tuberculation; multi-block matrix includes multiple ammonite individuals
  • Depositional Environment: Marginal to shallow marine, Western Interior Seaway

Hoploscaphites nebrascensis is particularly notable in palaeontology as it appears in strata very close to the K–Pg boundary, and some evidence suggests it may have been among the last surviving ammonites before extinction.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is shown in the photo
  • The fossil pictured is the actual item you will receive, carefully selected for quality, preservation, and scientific relevance

This specimen is ideal for collectors, researchers, educators, or anyone passionate about the fascinating story of life on Earth just before the age of dinosaurs ended.

(Actual as seen)

Only 1 left in stock

SKU: UF3779 Category:

Description

Offered here is a VERY RARE and scientifically important multi-block fossil featuring the heteromorph ammonite Hoploscaphites nebrascensis, from the Fox Hills Formation, part of the Pierre Shale Group, South Dakota, USA. This formation preserves some of the last ammonite faunas before the end-Cretaceous mass extinction event.

Hoploscaphites nebrascensis belongs to the family Scaphitidae, superfamily Scaphitoidea, and order Ammonitida. As a heteromorph ammonite, it exhibits a shell partially uncoiled into a hooked shape, representing a significant evolutionary departure from the typical tightly coiled ammonite form. This morphology is often interpreted as an adaptation to a unique ecological niche within the shallow, epicontinental Western Interior Seaway.

Geological & Scientific Details:

  • Scientific Name: Hoploscaphites nebrascensis
  • Fossil Type: Heteromorph Ammonite (Multi Block)
  • Geological Period: Cretaceous
  • Stage: Maastrichtian (approx. 72–66 million years ago)
  • Formation: Fox Hills Formation (Pierre Shale Group)
  • Location Found: South Dakota, United States
  • Order: Ammonitida
  • Superfamily: Scaphitoidea
  • Family: Scaphitidae
  • Morphological Features: Partially uncoiled heteromorph shell with fine ribbing and tuberculation; multi-block matrix includes multiple ammonite individuals
  • Depositional Environment: Marginal to shallow marine, Western Interior Seaway

Hoploscaphites nebrascensis is particularly notable in palaeontology as it appears in strata very close to the K–Pg boundary, and some evidence suggests it may have been among the last surviving ammonites before extinction.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is shown in the photo
  • The fossil pictured is the actual item you will receive, carefully selected for quality, preservation, and scientific relevance

This specimen is ideal for collectors, researchers, educators, or anyone passionate about the fascinating story of life on Earth just before the age of dinosaurs ended.

Additional information

Era

Cretaceous
Origin

USA

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.

Related products