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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Psiloceras planorbis Fossil Ammonite | Hettangian Jurassic Watchet Somerset UK | Certified Authentic

Psiloceras planorbis Fossil Ammonite | Hettangian Jurassic Watchet Somerset UK | Certified Authentic

£12.60

This listing features a scientifically important and beautifully preserved specimen of the early Jurassic ammonite Psiloceras planorbis, collected from the renowned fossil-rich coast of Watchet, Somerset, United Kingdom.

Geological & Taxonomic Information:

  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Species: Psiloceras planorbis (Sowerby, 1824)
  • Order: Ammonitida
  • Superfamily: Psiloceratoidea
  • Family: Psiloceratidae
  • Geological Stage: Lower Hettangian, Jurassic
  • Age: Approx. 201.3 to 199.5 million years ago
  • Formation: Blue Lias Formation
  • Biozone: Planorbis Zone (marker of the base of the Jurassic System)
  • Location: Watchet, Somerset, United Kingdom
  • Depositional Environment: Calm, shallow marine shelf with finely laminated limestone and shale deposition ideal for fossil preservation

Scientific Importance: Psiloceras planorbis is an international index fossil used to define the boundary between the Triassic and Jurassic periods. Its appearance marks the start of the Jurassic System, making it one of the most crucial biostratigraphic fossils in geologic history.

Morphological Features:

  • Planispiral coiled shell
  • Smooth whorls with minimal ribbing
  • Wide and open umbilicus
  • Streamlined form with faint growth lines
  • Excellent preservation typical of the Blue Lias coast

Notable Characteristics: Watchet ammonites are highly sought after due to their exceptional detail and scientific significance. This specimen is a fine representation of P. planorbis, ideal for serious collectors, educational institutions, and museum displays.

Specimen Information:

  • Origin: Watchet, Somerset, United Kingdom
  • Scale: Scale rule/cube = 1cm. Please refer to the image for full sizing.
  • Condition: Excellent fossil preservation
  • Photo: The image provided is of the actual specimen you will receive

Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is individually selected for its scientific value, display quality, and condition.

This Psiloceras planorbis ammonite represents a unique opportunity to own a fossil that not only holds geological significance but also captures the earliest evolutionary developments of Jurassic marine ecosystems.

(Actual as seen)

Only 1 left in stock

SKU: UF4382 Category:

Description

This listing features a scientifically important and beautifully preserved specimen of the early Jurassic ammonite Psiloceras planorbis, collected from the renowned fossil-rich coast of Watchet, Somerset, United Kingdom.

Geological & Taxonomic Information:

  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Species: Psiloceras planorbis (Sowerby, 1824)
  • Order: Ammonitida
  • Superfamily: Psiloceratoidea
  • Family: Psiloceratidae
  • Geological Stage: Lower Hettangian, Jurassic
  • Age: Approx. 201.3 to 199.5 million years ago
  • Formation: Blue Lias Formation
  • Biozone: Planorbis Zone (marker of the base of the Jurassic System)
  • Location: Watchet, Somerset, United Kingdom
  • Depositional Environment: Calm, shallow marine shelf with finely laminated limestone and shale deposition ideal for fossil preservation

Scientific Importance: Psiloceras planorbis is an international index fossil used to define the boundary between the Triassic and Jurassic periods. Its appearance marks the start of the Jurassic System, making it one of the most crucial biostratigraphic fossils in geologic history.

Morphological Features:

  • Planispiral coiled shell
  • Smooth whorls with minimal ribbing
  • Wide and open umbilicus
  • Streamlined form with faint growth lines
  • Excellent preservation typical of the Blue Lias coast

Notable Characteristics: Watchet ammonites are highly sought after due to their exceptional detail and scientific significance. This specimen is a fine representation of P. planorbis, ideal for serious collectors, educational institutions, and museum displays.

Specimen Information:

  • Origin: Watchet, Somerset, United Kingdom
  • Scale: Scale rule/cube = 1cm. Please refer to the image for full sizing.
  • Condition: Excellent fossil preservation
  • Photo: The image provided is of the actual specimen you will receive

Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is individually selected for its scientific value, display quality, and condition.

This Psiloceras planorbis ammonite represents a unique opportunity to own a fossil that not only holds geological significance but also captures the earliest evolutionary developments of Jurassic marine ecosystems.

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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