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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Genuine 14″ Diplomystus dentatus Fossil Fish – Mounted Wall Display – Green River Formation Eocene USA – Certificate Included

Original price was: £1,080.00.Current price is: £972.00.

Authentic 14″ Diplomystus dentatus Fossil Fish – Mounted Wall Display from the Green River Formation, Wyoming, USA

This stunning 14-inch Diplomystus dentatus fossil fish is a genuine specimen from the world-famous Green River Formation of Wyoming, USA. Mounted on a natural limestone slab and fitted with sturdy hanging chains, it is ready for immediate display as a striking piece of prehistoric natural history wall art.

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
  • Scale Rule Squares / Cube = 1cm: Please refer to photo for full sizing
  • What you see is exactly what you’ll receive – no stock photos or replicas

Fossil Information

  • Species: Diplomystus dentatus
  • Fossil Type: Complete fossil fish
  • Length: Approx. 14 inches
  • Formation: Green River Formation
  • Member: Fossil Butte Member
  • Layer: Split Fish Layer
  • Geological Age: Eocene Epoch (~50 million years ago)
  • Location: Kemmerer, Wyoming, USA

Scientific Classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii (Ray-finned fishes)
  • Order: Elopiformes
  • Family: Ellimmichthyidae
  • Genus: Diplomystus
  • Species: D. dentatus

Geological & Environmental Context

  • Depositional Environment:
  • The Green River Formation represents a series of intermountain lake basins formed during the Eocene. These lakes had anoxic bottom waters and very fine sediments, ideal for the exquisite preservation of soft-bodied and bony structures.
  • The Split Fish Layer is known for producing fossil specimens with incredible detail, preserved in laminated micritic limestone.
  • Paleoecology & Morphology:
  • Diplomystus dentatus was a predatory fish characterized by its upturned mouth and elongated body. It likely fed on smaller fish species like Knightia, which are often found alongside it.
  • Notable for its forked tail, ganoid scales, and distinct vertebral column preserved in high detail in fossil specimens.
  • Notable Features:
  • Exceptionally well-preserved skeleton with fine bone structure
  • Beautiful display piece with natural contrasting matrix
  • Professionally mounted with metal hardware and chains for secure wall hanging

Why This Fossil Stands Out

  • This is a museum-quality piece sourced from a well-documented, classic fossil locality.
  • Highly collectible due to its size (14 inches), aesthetic presentation, and scientific importance.
  • Green River fossils are celebrated worldwide for their completeness, clarity, and context within ancient lacustrine environments.

What’s Included

  • One genuine fossil of Diplomystus dentatus mounted on slab
  • Wall-mounting chains pre-installed
  • Certificate of Authenticity confirming scientific and locality details
  • Secure, tracked shipping with protective packaging

Perfect For

  • Natural history collectors
  • Interior decorators and enthusiasts of fossil décor
  • Educational institutions and museums
  • Science lovers and fossil display enthusiasts

 

(Actual as seen)

Includes a fully hand-signed Premium Certificate of Authenticity.

Only 1 left in stock

SKU: MG6003 Categories: ,

Description

Authentic 14″ Diplomystus dentatus Fossil Fish – Mounted Wall Display from the Green River Formation, Wyoming, USA

This stunning 14-inch Diplomystus dentatus fossil fish is a genuine specimen from the world-famous Green River Formation of Wyoming, USA. Mounted on a natural limestone slab and fitted with sturdy hanging chains, it is ready for immediate display as a striking piece of prehistoric natural history wall art.

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
  • Scale Rule Squares / Cube = 1cm: Please refer to photo for full sizing
  • What you see is exactly what you’ll receive – no stock photos or replicas

Fossil Information

  • Species: Diplomystus dentatus
  • Fossil Type: Complete fossil fish
  • Length: Approx. 14 inches
  • Formation: Green River Formation
  • Member: Fossil Butte Member
  • Layer: Split Fish Layer
  • Geological Age: Eocene Epoch (~50 million years ago)
  • Location: Kemmerer, Wyoming, USA

Scientific Classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii (Ray-finned fishes)
  • Order: Elopiformes
  • Family: Ellimmichthyidae
  • Genus: Diplomystus
  • Species: D. dentatus

Geological & Environmental Context

  • Depositional Environment:
  • The Green River Formation represents a series of intermountain lake basins formed during the Eocene. These lakes had anoxic bottom waters and very fine sediments, ideal for the exquisite preservation of soft-bodied and bony structures.
  • The Split Fish Layer is known for producing fossil specimens with incredible detail, preserved in laminated micritic limestone.
  • Paleoecology & Morphology:
  • Diplomystus dentatus was a predatory fish characterized by its upturned mouth and elongated body. It likely fed on smaller fish species like Knightia, which are often found alongside it.
  • Notable for its forked tail, ganoid scales, and distinct vertebral column preserved in high detail in fossil specimens.
  • Notable Features:
  • Exceptionally well-preserved skeleton with fine bone structure
  • Beautiful display piece with natural contrasting matrix
  • Professionally mounted with metal hardware and chains for secure wall hanging

Why This Fossil Stands Out

  • This is a museum-quality piece sourced from a well-documented, classic fossil locality.
  • Highly collectible due to its size (14 inches), aesthetic presentation, and scientific importance.
  • Green River fossils are celebrated worldwide for their completeness, clarity, and context within ancient lacustrine environments.

What’s Included

  • One genuine fossil of Diplomystus dentatus mounted on slab
  • Wall-mounting chains pre-installed
  • Certificate of Authenticity confirming scientific and locality details
  • Secure, tracked shipping with protective packaging

Perfect For

  • Natural history collectors
  • Interior decorators and enthusiasts of fossil décor
  • Educational institutions and museums
  • Science lovers and fossil display enthusiasts

 

Additional information

Era

Eocene

Origin

USA

Eocene Information

The Eocene Period (56–33.9 million years ago) was a time of warm global temperatures and the rapid evolution of mammals following the extinction of the dinosaurs. The climate was hot and humid, with lush rainforests covering much of the planet, even near the poles. Mammals diversified into new ecological roles, with early primates, whales (like Basilosaurus), large herbivores, and carnivores emerging. Birds and reptiles also thrived, and the first grasses began spreading, setting the stage for later grassland ecosystems. By the late Eocene, the Earth’s climate cooled significantly, leading to the formation of the first Antarctic ice sheets and the eventual transition to the drier, cooler Oligocene Period.

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