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Eusalenia fossil echinoid | small jurassic sea urchin oxfordshire uk | genuine w/ coa

Eusalenia fossil echinoid | small jurassic sea urchin oxfordshire uk | genuine w/ coa

AUD $23.50

Fossil Type & Species: Eusalenia (small fossil echinoid – sea urchin)

Geological Formation: Middle Oxford Clay Formation

Geological Period: Middle Jurassic (approx. 163 – 157 million years ago)

Locality: Oxfordshire, United Kingdom

 

Detailed Description: This listing features a well-preserved fossil echinoid from the extinct genus Eusalenia, a group of small, irregular sea urchins that inhabited the shallow marine environments of the Jurassic seas. This particular specimen was collected from the Middle Oxford Clay deposits in Oxfordshire, UK, an area celebrated for its rich and diverse marine fossil content.

The fossil echinoid exhibits classic characteristics of Eusalenia: a gently domed test (shell), small size, and bilateral symmetry, with subtle surface features and defined plate structures. These features reflect an adaptation to soft seafloor sediments, where these echinoids lived and fed as part of a thriving Mesozoic marine ecosystem.

Geological Insight: The Oxford Clay Formation represents a mid-Jurassic marine environment laid down in a warm, shallow epicontinental sea. It is particularly well known for its abundance of marine fossils, including ammonites, marine reptiles, and a variety of invertebrates like echinoids. The preservation within the fine clay matrix ensures that even small and delicate specimens like Eusalenia can retain excellent detail.

 

Item Specifics:

  • Genus: Eusalenia
  • Fossil Type: Echinoid (Sea Urchin)
  • Condition: Natural, unrestored
  • Geological Period: Middle Jurassic
  • Formation: Oxford Clay
  • Location: Oxfordshire, UK
  • Size: Please see scale photo with 1cm squares
  • Item: Exact specimen shown in listing

 

Authenticity Guarantee: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is carefully selected for quality and scientific interest. The fossil shown in the images is the actual one you will receive.

 

Shipping & Packaging: Shipped securely with protective packaging and tracking. An excellent item for collectors, educators, or anyone fascinated by Earth’s prehistoric past.

 

(Actual as seen)

Out of stock

SKU: SF0102 Category:

Description

Fossil Type & Species: Eusalenia (small fossil echinoid – sea urchin)

Geological Formation: Middle Oxford Clay Formation

Geological Period: Middle Jurassic (approx. 163 – 157 million years ago)

Locality: Oxfordshire, United Kingdom

 

Detailed Description: This listing features a well-preserved fossil echinoid from the extinct genus Eusalenia, a group of small, irregular sea urchins that inhabited the shallow marine environments of the Jurassic seas. This particular specimen was collected from the Middle Oxford Clay deposits in Oxfordshire, UK, an area celebrated for its rich and diverse marine fossil content.

The fossil echinoid exhibits classic characteristics of Eusalenia: a gently domed test (shell), small size, and bilateral symmetry, with subtle surface features and defined plate structures. These features reflect an adaptation to soft seafloor sediments, where these echinoids lived and fed as part of a thriving Mesozoic marine ecosystem.

Geological Insight: The Oxford Clay Formation represents a mid-Jurassic marine environment laid down in a warm, shallow epicontinental sea. It is particularly well known for its abundance of marine fossils, including ammonites, marine reptiles, and a variety of invertebrates like echinoids. The preservation within the fine clay matrix ensures that even small and delicate specimens like Eusalenia can retain excellent detail.

 

Item Specifics:

  • Genus: Eusalenia
  • Fossil Type: Echinoid (Sea Urchin)
  • Condition: Natural, unrestored
  • Geological Period: Middle Jurassic
  • Formation: Oxford Clay
  • Location: Oxfordshire, UK
  • Size: Please see scale photo with 1cm squares
  • Item: Exact specimen shown in listing

 

Authenticity Guarantee: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. Each piece is carefully selected for quality and scientific interest. The fossil shown in the images is the actual one you will receive.

 

Shipping & Packaging: Shipped securely with protective packaging and tracking. An excellent item for collectors, educators, or anyone fascinated by Earth’s prehistoric past.

 

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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