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RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen
RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen - Image 2
RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen - Image 3
RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen - Image 4
RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen - Image 5

RARE KOSSMATIA TENUISTRIATUS Fossil Ammonite – Upper Kimmeridgian, Late Jurassic: Russia – Alice Purnell Collection – Certified Specimen

£96.00

A rare and scientifically significant fossil ammonite specimen of Kossmatia tenuistriatus, dating to the Upper Kimmeridgian Stage of the Late Jurassic, discovered in Russia. This fossil originates from the Alice Purnell Collection, renowned for its well-documented and curated paleontological specimens.

Kossmatia tenuistriatus is an extinct species of ammonite belonging to the family Perisphinctidae, superfamily Perisphinctoidea, within the order Ammonitida. It is characterised by its finely ribbed, moderately involute shell and typical planispiral form. This genus played a role in regional stratigraphy and serves as an important indicator for Kimmeridgian marine faunal assemblages.

Geological & Scientific Details:

  • Scientific Name: Kossmatia tenuistriatus
  • Fossil Type: Ammonite
  • Geological Period: Late Jurassic
  • Geological Stage: Upper Kimmeridgian (~154–152 million years ago)
  • Location Found: Russia
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Perisphinctidae
  • Morphological Features: Finely ribbed, compressed whorls, typical planispiral shell, moderate umbilicus
  • Depositional Environment: Shallow marine shelf, carbonate-rich clays and silts under moderate-energy marine conditions

This fossil provides valuable insights into the biodiversity and marine ecology of the Late Jurassic in Boreal marine provinces.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – please see photo for exact size
  • The fossil pictured is the actual specimen you will receive
  • Part of the historically important Alice Purnell Collection – ideal for collectors, educators, and museum-quality displays

A beautifully preserved and scientifically important ammonite fossil with excellent provenance and visual appeal.

(Actual as seen)

Out of stock

SKU: AF1213 Category:

Description

A rare and scientifically significant fossil ammonite specimen of Kossmatia tenuistriatus, dating to the Upper Kimmeridgian Stage of the Late Jurassic, discovered in Russia. This fossil originates from the Alice Purnell Collection, renowned for its well-documented and curated paleontological specimens.

Kossmatia tenuistriatus is an extinct species of ammonite belonging to the family Perisphinctidae, superfamily Perisphinctoidea, within the order Ammonitida. It is characterised by its finely ribbed, moderately involute shell and typical planispiral form. This genus played a role in regional stratigraphy and serves as an important indicator for Kimmeridgian marine faunal assemblages.

Geological & Scientific Details:

  • Scientific Name: Kossmatia tenuistriatus
  • Fossil Type: Ammonite
  • Geological Period: Late Jurassic
  • Geological Stage: Upper Kimmeridgian (~154–152 million years ago)
  • Location Found: Russia
  • Order: Ammonitida
  • Superfamily: Perisphinctoidea
  • Family: Perisphinctidae
  • Morphological Features: Finely ribbed, compressed whorls, typical planispiral shell, moderate umbilicus
  • Depositional Environment: Shallow marine shelf, carbonate-rich clays and silts under moderate-energy marine conditions

This fossil provides valuable insights into the biodiversity and marine ecology of the Late Jurassic in Boreal marine provinces.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – please see photo for exact size
  • The fossil pictured is the actual specimen you will receive
  • Part of the historically important Alice Purnell Collection – ideal for collectors, educators, and museum-quality displays

A beautifully preserved and scientifically important ammonite fossil with excellent provenance and visual appeal.

Additional information

Era

Jurassic
Origin

Russia

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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