Description
Genuine Jurassic Cidaris Sea Urchin Fossil from Morocco
Offered here is a beautiful Cidaris fossil sea urchin from the Jurassic Period, discovered in Morocco, a region famous worldwide for its exceptionally preserved marine fossils. This is a carefully chosen genuine fossil specimen, and the photographs show the exact piece you will receive. Full sizing details can be clearly seen in the listing images.
This specimen includes a Certificate of Authenticity lifetime guarantee generic card, providing long-term reassurance of authenticity and collector confidence.
Fossil Identification: Cidaris Echinoid
Cidaris is a genus of extinct echinoids (sea urchins) belonging to the order Cidaroida, an ancient group of marine invertebrates known for their robust tests and distinctive spines. Cidaroid urchins are among the most recognisable echinoderms in the fossil record, valued for their striking morphology and long evolutionary history.
These sea urchins lived on the seafloor, moving slowly across marine sediments and feeding on organic material, algae, and small organisms. Their skeletal remains fossilised readily, making them important index fossils for understanding Jurassic marine ecosystems.
Geological Age and Jurassic Marine Environment
This fossil dates to the Jurassic Period, approximately 201–145 million years ago, when warm shallow seas covered much of what is now North Africa. Morocco’s Jurassic deposits preserve a rich variety of marine life, including ammonites, bivalves, corals, and echinoids such as Cidaris.
During this time, carbonate-rich seabeds and stable marine conditions supported thriving echinoderm communities. The fossil record from Morocco provides an exceptional window into these ancient ocean environments.
Morphology and Notable Features
Cidaris fossils are prized for their distinctive body structure. The fossil typically preserves the test (the hard skeletal shell), which is composed of interlocking calcite plates arranged in symmetrical patterns.
Notable features often include:
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Rounded to slightly flattened echinoid test
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Clearly defined plate arrangement and tubercles
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Attachment points where spines were originally anchored
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Strong natural texture and surface detail
Cidaroid urchins are especially admired because their anatomy is robust, allowing fine structural details to survive fossilisation over millions of years.
Depositional Environment and Fossil Preservation
Jurassic echinoids from Morocco were preserved in marine sedimentary environments, where sea urchin remains settled onto soft seabed muds or carbonate sands. Rapid burial protected the test from разрушение and scavenging.
Over time, mineral replacement and lithification turned these remains into stone, preserving the urchin’s form as a lasting fossil record. Morocco’s fossil beds are renowned for producing well-defined echinoids due to their favourable depositional conditions.
Collector Display and Educational Value
This Cidaris sea urchin fossil is ideal for:
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Fossil and natural history collections
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Marine invertebrate fossil displays
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Jurassic period specimen collections
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Educational study of echinoderm evolution
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Unique gifts for fossil and geology enthusiasts
Sea urchin fossils are especially appealing because of their symmetry, tactile surface detail, and strong connection to ancient marine life.
Certificate of Authenticity Included
This is a genuine fossil specimen and includes a Certificate of Authenticity lifetime guarantee generic card, ensuring peace of mind and long-term assurance for collectors and buyers.
A Timeless Jurassic Marine Fossil
Cidaris echinoids represent one of the most iconic groups of prehistoric sea urchins, thriving in Jurassic oceans long before modern marine ecosystems developed. This Moroccan specimen offers a remarkable connection to ancient seafloor life, preserved for millions of years and now ready to be appreciated as a genuine and meaningful fossil treasure.
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