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.

FREE UK DELIVERY - Save up to 60%

SALE 10%
RARE Triassic Ammonite Fossil – PARANANNITES ASPENENSIS – Thaynes Limestone – Lower Triassic – Elko County, Nevada, USA

RARE Triassic Ammonite Fossil – PARANANNITES ASPENENSIS – Thaynes Limestone – Lower Triassic – Elko County, Nevada, USA

Original price was: £18.00.Current price is: £16.20.

This listing presents a RARE and authentic Triassic ammonite fossil of the species Paranannites aspenensis, collected from the renowned Thaynes Limestone in Elko County, Northeastern Nevada, USA. A superb and uncommon example of Lower Triassic ammonoid diversity.

Fossil Type & Species:

  • Type: Fossilised Ammonite (extinct marine cephalopod)
  • Species: Paranannites aspenensis

Geological Context:

  • Era: Mesozoic
  • Period: Triassic
  • Stage: Lower Triassic (Spathian)
  • Formation: Thaynes Limestone
  • Locality: Elko County, Nevada, USA
  • Depositional Environment: Marine shelf with carbonate sedimentation; part of a broad epicontinental sea environment following the Permian-Triassic extinction event

Morphological Features:

  • Moderately involute shell with smooth flanks and a rounded venter
  • Suture lines are ceratitic, consistent with early Triassic ammonoids
  • Small to medium-sized ammonoid typical of Lower Triassic faunas

Scientific Notes:

  • Paranannites aspenensis is part of the important recovery fauna following the end-Permian extinction and offers insight into early Mesozoic marine ecosystems.
  • The Thaynes Limestone is noted for its well-preserved ammonoid faunas used in biostratigraphic zonation of the Triassic.

Taxonomy:

  • Order: Ceratitida
  • Superfamily: Meekoceratoidea
  • Family: Paranannitidae
  • Formally Described By: Described within the broader works on Early Triassic ammonoids of North America

Authenticity & Display:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. The fossil shown in the photograph is the exact piece you will receive.

Please refer to the image for exact sizing – Scale cube = 1cm.

An exceptional piece for any fossil enthusiast, especially those collecting early Mesozoic ammonites or significant post-extinction recovery fauna. Suitable for academic collections, educational displays, or serious paleontology collectors.

(Actual as seen)

Only 1 left in stock

SKU: SF0286 Category:

Description

This listing presents a RARE and authentic Triassic ammonite fossil of the species Paranannites aspenensis, collected from the renowned Thaynes Limestone in Elko County, Northeastern Nevada, USA. A superb and uncommon example of Lower Triassic ammonoid diversity.

Fossil Type & Species:

  • Type: Fossilised Ammonite (extinct marine cephalopod)
  • Species: Paranannites aspenensis

Geological Context:

  • Era: Mesozoic
  • Period: Triassic
  • Stage: Lower Triassic (Spathian)
  • Formation: Thaynes Limestone
  • Locality: Elko County, Nevada, USA
  • Depositional Environment: Marine shelf with carbonate sedimentation; part of a broad epicontinental sea environment following the Permian-Triassic extinction event

Morphological Features:

  • Moderately involute shell with smooth flanks and a rounded venter
  • Suture lines are ceratitic, consistent with early Triassic ammonoids
  • Small to medium-sized ammonoid typical of Lower Triassic faunas

Scientific Notes:

  • Paranannites aspenensis is part of the important recovery fauna following the end-Permian extinction and offers insight into early Mesozoic marine ecosystems.
  • The Thaynes Limestone is noted for its well-preserved ammonoid faunas used in biostratigraphic zonation of the Triassic.

Taxonomy:

  • Order: Ceratitida
  • Superfamily: Meekoceratoidea
  • Family: Paranannitidae
  • Formally Described By: Described within the broader works on Early Triassic ammonoids of North America

Authenticity & Display:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. The fossil shown in the photograph is the exact piece you will receive.

Please refer to the image for exact sizing – Scale cube = 1cm.

An exceptional piece for any fossil enthusiast, especially those collecting early Mesozoic ammonites or significant post-extinction recovery fauna. Suitable for academic collections, educational displays, or serious paleontology collectors.

Additional information

Era

Triassic
Origin

USA

Triassic Information

The Triassic Period (252–201 million years ago) marked the beginning of the Mesozoic Era, following the Permian-Triassic mass extinction, the most severe extinction event in Earth's history. The climate was hot and dry, with vast deserts and little polar ice. Life slowly recovered, leading to the rise of the first dinosaurs, pterosaurs (flying reptiles), and early mammals. Reptiles, including large archosaurs (ancestors of crocodiles and dinosaurs), dominated both land and sea. In the oceans, ichthyosaurs and plesiosaurs thrived alongside ammonites and early coral reefs. The first true conifers and ginkgo trees spread across the land. The period ended with another mass extinction, paving the way for the Jurassic and the golden age of dinosaurs.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Related products