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 Tropidoceras masseanum Ammonite Fossil | Pliensbachian Jurassic | Hornsea, Holderness, UK | Genuine Fossil with COA
RARE Tropidoceras masseanum Ammonite Fossil | Pliensbachian Jurassic | Hornsea, Holderness, UK | Genuine Fossil with COA - Image 2

RARE Tropidoceras masseanum Ammonite Fossil | Pliensbachian Jurassic | Hornsea, Holderness, UK | Genuine Fossil with COA

£360.00

Featured here is a RARE fossil ammonite: Tropidoceras masseanum, originating from the Pliensbachian stage of the Lower Jurassic, collected from the Hornsea coast in the Holderness region, United Kingdom.

This beautifully preserved fossil captures the classic coiled shell morphology typical of early Jurassic ammonites. It is a 100% genuine specimen, carefully selected and backed by a Certificate of Authenticity. The photo shows the exact fossil you will receive, with a 1cm scale cube included for reference.

Geological & Scientific Information:

  • Species: Tropidoceras masseanum
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Stage: Pliensbachian (approx. 190.8 to 182.7 million years ago)
  • Location Found: Hornsea, Holderness Coast, East Yorkshire, United Kingdom
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Tropidoceratidae
  • Morphological Features: Typically exhibits strongly ribbed evolute shells, with a pronounced keel and deep whorls. The ribbing aids in identifying growth stages and evolutionary relationships. This specimen displays fine ribbing with intact sutures, making it a valuable collector’s piece.
  • Depositional Environment: Collected from marine clay and shale deposits typical of the Holderness coastline, formed in an ancient shallow epicontinental sea that once covered much of Jurassic Britain.
  • Scientific Importance: Tropidoceras is a key taxon for biostratigraphic dating within Lower Jurassic ammonite zones. Its presence helps geologists correlate Pliensbachian sequences across Europe.

Additional Notes:

The erosion-prone cliffs of Holderness are among the fastest-eroding coastlines in Europe, occasionally revealing remarkable fossil finds like this ammonite. The rarity of such complete specimens, especially from the Pliensbachian, makes this a collector’s highlight.

Why Buy From Us?

  • 100% authentic fossils from trusted sources
  • Includes a Certificate of Authenticity
  • Exact specimen shown in photos
  • Ideal for collectors, educators, and fossil enthusiasts

This Tropidoceras masseanum ammonite fossil is a rare opportunity to own a genuine piece of Britain’s Jurassic heritage. A must-have for any fossil collection!

(Actual as seen)

Includes a fully hand-signed Premium Certificate of Authenticity.

Only 1 left in stock

SKU: UF3831 Category:

Description

Featured here is a RARE fossil ammonite: Tropidoceras masseanum, originating from the Pliensbachian stage of the Lower Jurassic, collected from the Hornsea coast in the Holderness region, United Kingdom.

This beautifully preserved fossil captures the classic coiled shell morphology typical of early Jurassic ammonites. It is a 100% genuine specimen, carefully selected and backed by a Certificate of Authenticity. The photo shows the exact fossil you will receive, with a 1cm scale cube included for reference.

Geological & Scientific Information:

  • Species: Tropidoceras masseanum
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Stage: Pliensbachian (approx. 190.8 to 182.7 million years ago)
  • Location Found: Hornsea, Holderness Coast, East Yorkshire, United Kingdom
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Tropidoceratidae
  • Morphological Features: Typically exhibits strongly ribbed evolute shells, with a pronounced keel and deep whorls. The ribbing aids in identifying growth stages and evolutionary relationships. This specimen displays fine ribbing with intact sutures, making it a valuable collector’s piece.
  • Depositional Environment: Collected from marine clay and shale deposits typical of the Holderness coastline, formed in an ancient shallow epicontinental sea that once covered much of Jurassic Britain.
  • Scientific Importance: Tropidoceras is a key taxon for biostratigraphic dating within Lower Jurassic ammonite zones. Its presence helps geologists correlate Pliensbachian sequences across Europe.

Additional Notes:

The erosion-prone cliffs of Holderness are among the fastest-eroding coastlines in Europe, occasionally revealing remarkable fossil finds like this ammonite. The rarity of such complete specimens, especially from the Pliensbachian, makes this a collector’s highlight.

Why Buy From Us?

  • 100% authentic fossils from trusted sources
  • Includes a Certificate of Authenticity
  • Exact specimen shown in photos
  • Ideal for collectors, educators, and fossil enthusiasts

This Tropidoceras masseanum ammonite fossil is a rare opportunity to own a genuine piece of Britain’s Jurassic heritage. A must-have for any fossil collection!

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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