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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Amaltheus subnodosus Fossil Ammonite Jurassic Pliensbachian Staithes Whitby UK Rare British Cephalopod
Amaltheus subnodosus Fossil Ammonite Jurassic Pliensbachian Staithes Whitby UK Rare British Cephalopod - Image 2

Amaltheus subnodosus Fossil Ammonite Jurassic Pliensbachian Staithes Whitby UK Rare British Cephalopod

£14.40

A rare and scientifically significant fossil ammonite of the species Amaltheus subnodosus, dating from the Upper Pliensbachian stage of the Lower Jurassic period. This specimen originates from the renowned fossil-rich marine strata around Staithes and Whitby, North Yorkshire, United Kingdom—an area globally recognised for its exceptional ammonite preservation.

Amaltheus subnodosus is notable for its sharply ribbed, evolute shell with pronounced tuberculation along the ventrolateral margins. The species belongs to the family Amaltheidae within the order Ammonitida. Its shell structure and ornamentation are key for identifying biozones within the Pliensbachian stage and are used by paleontologists for stratigraphic correlation.

Geological & Scientific Details:

  • Species: Amaltheus subnodosus
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Subclass: Ammonoidea
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Amaltheidae
  • Geological Stage: Upper Pliensbachian
  • Biozone: Margaritatus Zone (tentative, based on stratigraphy)
  • Age: Approx. 189–183 million years ago
  • Location: Staithes/Whitby, North Yorkshire, United Kingdom
  • Depositional Environment: Shallow marine shelf, oxygen-rich Jurassic sea
  • Morphology Features: Evolute coiling, strong radial ribbing, ventrolateral tubercles
  • Notable: Stratigraphically important ammonite species; sharp, distinctive ornamentation

Why This Specimen Stands Out:

  • Classic Whitby Coast ammonite – scientifically and historically prized
  • Strong preservation of ribbing and tuberculation
  • Ideal for collectors, educators, or display
  • Supplied with Certificate of Authenticity
  • Genuine British fossil from a globally significant Jurassic site

Scale Reference:

Scale Rule Squares / Cube = 1cm – Please see the photo for full sizing. The image shows the actual specimen you will receive.

Shipping & Packaging:

  • Expertly packed for safe delivery
  • Tracked international shipping available

An outstanding and authentic fossil from one of the UK’s premier Jurassic locations.

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

(Actual as seen)

Only 1 left in stock

SKU: UF3521 Category:

Description

A rare and scientifically significant fossil ammonite of the species Amaltheus subnodosus, dating from the Upper Pliensbachian stage of the Lower Jurassic period. This specimen originates from the renowned fossil-rich marine strata around Staithes and Whitby, North Yorkshire, United Kingdom—an area globally recognised for its exceptional ammonite preservation.

Amaltheus subnodosus is notable for its sharply ribbed, evolute shell with pronounced tuberculation along the ventrolateral margins. The species belongs to the family Amaltheidae within the order Ammonitida. Its shell structure and ornamentation are key for identifying biozones within the Pliensbachian stage and are used by paleontologists for stratigraphic correlation.

Geological & Scientific Details:

  • Species: Amaltheus subnodosus
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Subclass: Ammonoidea
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Amaltheidae
  • Geological Stage: Upper Pliensbachian
  • Biozone: Margaritatus Zone (tentative, based on stratigraphy)
  • Age: Approx. 189–183 million years ago
  • Location: Staithes/Whitby, North Yorkshire, United Kingdom
  • Depositional Environment: Shallow marine shelf, oxygen-rich Jurassic sea
  • Morphology Features: Evolute coiling, strong radial ribbing, ventrolateral tubercles
  • Notable: Stratigraphically important ammonite species; sharp, distinctive ornamentation

Why This Specimen Stands Out:

  • Classic Whitby Coast ammonite – scientifically and historically prized
  • Strong preservation of ribbing and tuberculation
  • Ideal for collectors, educators, or display
  • Supplied with Certificate of Authenticity
  • Genuine British fossil from a globally significant Jurassic site

Scale Reference:

Scale Rule Squares / Cube = 1cm – Please see the photo for full sizing. The image shows the actual specimen you will receive.

Shipping & Packaging:

  • Expertly packed for safe delivery
  • Tracked international shipping available

An outstanding and authentic fossil from one of the UK’s premier Jurassic locations.

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

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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