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Fossil echinoid (sea urchin: micraster cortestudinarium) – chalk, cretaceous, seven sisters, sussex, uk

£24.00

This listing is for a well-preserved fossil echinoid (Micraster cortestudinarium), a heart-shaped sea urchin from the Late Cretaceous chalk deposits of Seven Sisters, Sussex, UK. This specimen is an excellent addition to any fossil collection and is ideal for display, education, or research.

About Micraster cortestudinarium (Fossil Echinoid)

Micraster is a genus of extinct burrowing sea urchins that lived during the Late Cretaceous period. These echinoids are recognized for their heart-shaped form and specialized adaptations for burrowing in soft marine sediments. Micraster cortestudinarium is one of the most well-documented species, used in biostratigraphy to help date sedimentary rock layers.

Fossil Details:

  • Scientific Name: Micraster cortestudinarium
  • Common Name: Fossil Echinoid (Sea Urchin)
  • Geological Age: Late Cretaceous
  • Formation/Location: Chalk, Seven Sisters, Sussex, UK
  • Size: Refer to listing photos for accurate dimensions
  • Condition: Well-preserved with fine details clearly visible

Why This Fossil is Special:

  • A quality Micraster cortestudinarium fossil from the well-known Seven Sisters chalk deposits
  • Sourced from an iconic UK fossil locality
  • Ideal for fossil displays, educational use, or personal collections
  • Comes from the Alice Purnell Collection, one of the most extensive ammonite and fossil collections in the world
  • 100% Genuine Specimen with a Certificate of Authenticity

What You See is What You Get

The fossil shown in the photos is the exact specimen you will receive—no stock images used.

Buy with Confidence:

  • Authenticity Guaranteed – Professionally sourced, identified, and verified
  • Secure Packaging – Carefully packed for safe delivery
  • Fast & Reliable Shipping – Worldwide shipping available

(Actual as seen)

Out of stock

SKU: AF0300 Category:

Description

This listing is for a well-preserved fossil echinoid (Micraster cortestudinarium), a heart-shaped sea urchin from the Late Cretaceous chalk deposits of Seven Sisters, Sussex, UK. This specimen is an excellent addition to any fossil collection and is ideal for display, education, or research.

About Micraster cortestudinarium (Fossil Echinoid)

Micraster is a genus of extinct burrowing sea urchins that lived during the Late Cretaceous period. These echinoids are recognized for their heart-shaped form and specialized adaptations for burrowing in soft marine sediments. Micraster cortestudinarium is one of the most well-documented species, used in biostratigraphy to help date sedimentary rock layers.

Fossil Details:

  • Scientific Name: Micraster cortestudinarium
  • Common Name: Fossil Echinoid (Sea Urchin)
  • Geological Age: Late Cretaceous
  • Formation/Location: Chalk, Seven Sisters, Sussex, UK
  • Size: Refer to listing photos for accurate dimensions
  • Condition: Well-preserved with fine details clearly visible

Why This Fossil is Special:

  • A quality Micraster cortestudinarium fossil from the well-known Seven Sisters chalk deposits
  • Sourced from an iconic UK fossil locality
  • Ideal for fossil displays, educational use, or personal collections
  • Comes from the Alice Purnell Collection, one of the most extensive ammonite and fossil collections in the world
  • 100% Genuine Specimen with a Certificate of Authenticity

What You See is What You Get

The fossil shown in the photos is the exact specimen you will receive—no stock images used.

Buy with Confidence:

  • Authenticity Guaranteed – Professionally sourced, identified, and verified
  • Secure Packaging – Carefully packed for safe delivery
  • Fast & Reliable Shipping – Worldwide shipping available

Additional information

Weight 0.1 g
Dimensions 10 × 10 × 10 cm
Era

Cretaceous

Origin

United Kingdom

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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