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 5" Fossil Ammonite Metrolytoceras metretum | Jurassic Middle Bajocian Dorset UK | Genuine + COA
Rare 5" Fossil Ammonite Metrolytoceras metretum | Jurassic Middle Bajocian Dorset UK | Genuine + COA - Image 2

Rare 5″ Fossil Ammonite Metrolytoceras metretum | Jurassic Middle Bajocian Dorset UK | Genuine + COA

£50.40

This listing is for a rare and finely preserved 5-inch fossil ammonite, Metrolytoceras metretum, from the Middle Bajocian Stage of the Jurassic Period, collected in Dorset, United Kingdom. The photo shows the actual specimen you will receive. The scale rule squares/cubes are 1cm — please see the image for full sizing.

This is a carefully selected piece with excellent preservation, suitable for display, educational use, or scientific collection.

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

 

Geological & Scientific Details:

  • Fossil Type: Ammonite
  • Species: Metrolytoceras metretum
  • Order: Ammonitida
  • Superfamily: Lytoceratoidea
  • Family: Lytoceratidae
  • Geological Stage: Middle Bajocian (approx. 168.3 – 166.1 million years ago)
  • Biozone: Likely associated with the Humphriesianum or Niortense Zones, based on known occurrences of the genus
  • Period: Jurassic
  • Locality: Dorset, England, UK
  • Depositional Environment: Offshore marine basin within the Wessex Basin, dominated by fine-grained calcareous mudstones and marl sediments

 

Morphology & Notable Features:

  • Involute and discoidal shell form typical of the genus
  • Smooth shell surface with subtle growth lines and faint ribbing
  • Wide umbilicus with visible whorls in high-quality specimens
  • Delicate and lightweight appearance, with the elegant coiling characteristic of Metrolytoceras
  • Excellent suture definition may be visible depending on preservation

 

Scientific Importance: Metrolytoceras metretum is a rare species from the family Lytoceratidae, known for their complex suture patterns and fast-swimming nektonic lifestyle. It plays a role in biostratigraphic correlation within the Middle Jurassic, particularly in British marine sequences.

The genus Metrolytoceras has been featured in regional ammonite monographs and is appreciated for its elegant form and rarity in UK fossil records.

 

Ideal For:

  • Fossil collectors specialising in Jurassic ammonites
  • Museum or academic reference collections
  • High-quality geological displays

 

What You Will Receive:

  • The exact Metrolytoceras metretum fossil shown in the photos
  • Certificate of Authenticity
  • Carefully packaged for safe delivery

 

If you have any questions or would like to know more about this specimen, feel free to message us — we’re always happy to share knowledge and help fellow fossil enthusiasts.

(Actual as seen)

Only 1 left in stock

SKU: UF4531 Category:

Description

This listing is for a rare and finely preserved 5-inch fossil ammonite, Metrolytoceras metretum, from the Middle Bajocian Stage of the Jurassic Period, collected in Dorset, United Kingdom. The photo shows the actual specimen you will receive. The scale rule squares/cubes are 1cm — please see the image for full sizing.

This is a carefully selected piece with excellent preservation, suitable for display, educational use, or scientific collection.

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

 

Geological & Scientific Details:

  • Fossil Type: Ammonite
  • Species: Metrolytoceras metretum
  • Order: Ammonitida
  • Superfamily: Lytoceratoidea
  • Family: Lytoceratidae
  • Geological Stage: Middle Bajocian (approx. 168.3 – 166.1 million years ago)
  • Biozone: Likely associated with the Humphriesianum or Niortense Zones, based on known occurrences of the genus
  • Period: Jurassic
  • Locality: Dorset, England, UK
  • Depositional Environment: Offshore marine basin within the Wessex Basin, dominated by fine-grained calcareous mudstones and marl sediments

 

Morphology & Notable Features:

  • Involute and discoidal shell form typical of the genus
  • Smooth shell surface with subtle growth lines and faint ribbing
  • Wide umbilicus with visible whorls in high-quality specimens
  • Delicate and lightweight appearance, with the elegant coiling characteristic of Metrolytoceras
  • Excellent suture definition may be visible depending on preservation

 

Scientific Importance: Metrolytoceras metretum is a rare species from the family Lytoceratidae, known for their complex suture patterns and fast-swimming nektonic lifestyle. It plays a role in biostratigraphic correlation within the Middle Jurassic, particularly in British marine sequences.

The genus Metrolytoceras has been featured in regional ammonite monographs and is appreciated for its elegant form and rarity in UK fossil records.

 

Ideal For:

  • Fossil collectors specialising in Jurassic ammonites
  • Museum or academic reference collections
  • High-quality geological displays

 

What You Will Receive:

  • The exact Metrolytoceras metretum fossil shown in the photos
  • Certificate of Authenticity
  • Carefully packaged for safe delivery

 

If you have any questions or would like to know more about this specimen, feel free to message us — we’re always happy to share knowledge and help fellow fossil enthusiasts.

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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