This is a rare and well-preserved Rhabocidaris sp regular echinoid fossil from the Kimmeridgian stage of the Late Jurassic, discovered in Malogosziz, Poland. A remarkable and scientifically significant specimen, this fossil showcases the intricate structure of this extinct sea urchin, making it a prized addition to any fossil collection.
Rhabocidaris sp belongs to a family of regular echinoids, meaning it retained the radial symmetry characteristic of earlier echinoids. These sea urchins had a rigid, spherical test (shell) covered in large, interlocking tubercles that supported robust spines. Their defensive adaptations helped them survive in the shallow marine environments of the Jurassic period.
Fossils of Rhabocidaris are particularly valuable for understanding the evolution of echinoids, as their distinct morphology provides key insights into their ecological role in Jurassic seas. The Kimmeridgian stage (~157–152 million years ago) was a period of extensive marine biodiversity, and these echinoids played an important part in the ecosystem.
Scale rule squares = 1cm. Please refer to the photos for precise dimensions.
This is a scientifically significant and highly collectible fossil, perfect for fossil enthusiasts, researchers, and collectors of rare Jurassic echinoids. A genuine piece of prehistoric marine history, securely packaged and ready for display.
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