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 baculites fossil ammonite – kossmatia tenuistriata, upper valanginian, cretaceous, italy – genuine specimen with coa
Rare baculites fossil ammonite – kossmatia tenuistriata, upper valanginian, cretaceous, italy – genuine specimen with coa - Image 2

Rare baculites fossil ammonite – kossmatia tenuistriata, upper valanginian, cretaceous, italy – genuine specimen with coa

Original price was: £48.00.Current price is: £38.40.

This is a rare Kossmatia tenuistriata fossil ammonite, dating back to the Upper Valanginian stage of the Early Cretaceous period (~137-133 million years ago), discovered in Italy. Kossmatia belongs to the Baculitidae family, a group of straight-shelled ammonites that adapted to open marine environments. Unlike coiled ammonites, Kossmatia evolved an elongated, uncoiled shell, which likely provided unique buoyancy adaptations for navigating the ancient seas.

Fossils from the Valanginian stage are relatively rare, representing an important period of ammonite diversification. This well-preserved specimen is highly sought after by collectors and researchers for its scientific significance and rarity.

Geological Information:

  • Formation: Cretaceous Marine Deposits
  • Stage: Upper Valanginian (~137-133 million years old)
  • Location: Italy
  • Depositional Environment: Shallow marine seafloor with fine sediment accumulation

Fossil Characteristics:

  • Straight-shelled ammonite with detailed suture patterns
  • Well-preserved structure showcasing natural growth features
  • Rare Early Cretaceous specimen from Italy
  • Highly collectible and scientifically valuable fossil

Key Features:

  • Authentic Kossmatia tenuistriata fossil ammonite
  • Rare and well-preserved specimen from the Early Cretaceous
  • From the Alice Purnell Collection
  • 100% genuine specimen with Certificate of Authenticity

Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

All fossils are securely packaged for worldwide shipping.

(Actual as seen)

Only 1 left in stock

SKU: AF0532 Category:

Description

This is a rare Kossmatia tenuistriata fossil ammonite, dating back to the Upper Valanginian stage of the Early Cretaceous period (~137-133 million years ago), discovered in Italy. Kossmatia belongs to the Baculitidae family, a group of straight-shelled ammonites that adapted to open marine environments. Unlike coiled ammonites, Kossmatia evolved an elongated, uncoiled shell, which likely provided unique buoyancy adaptations for navigating the ancient seas.

Fossils from the Valanginian stage are relatively rare, representing an important period of ammonite diversification. This well-preserved specimen is highly sought after by collectors and researchers for its scientific significance and rarity.

Geological Information:

  • Formation: Cretaceous Marine Deposits
  • Stage: Upper Valanginian (~137-133 million years old)
  • Location: Italy
  • Depositional Environment: Shallow marine seafloor with fine sediment accumulation

Fossil Characteristics:

  • Straight-shelled ammonite with detailed suture patterns
  • Well-preserved structure showcasing natural growth features
  • Rare Early Cretaceous specimen from Italy
  • Highly collectible and scientifically valuable fossil

Key Features:

  • Authentic Kossmatia tenuistriata fossil ammonite
  • Rare and well-preserved specimen from the Early Cretaceous
  • From the Alice Purnell Collection
  • 100% genuine specimen with Certificate of Authenticity

Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

All fossils are securely packaged for worldwide shipping.

Additional information

Weight 0.1 g
Dimensions 10 × 10 × 10 cm
Era

Cretaceous
Origin

Italy

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

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