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RARE Eurhodia trojana Fossil Echinoid - Eocene Chalk - Ocala, Florida, USA | Genuine | COA

RARE Eurhodia trojana Fossil Echinoid – Eocene Chalk – Ocala, Florida, USA | Genuine | COA

Original price was: £36.00.Current price is: £32.40.

This listing is for a RARE Fossil Echinoid – Eurhodia trojana, a beautifully preserved specimen from the Eocene Epoch, discovered in the Ocala Limestone Formation, Florida, USA.

This is a 100% genuine fossil echinoid and comes with a Certificate of Authenticity. The specimen pictured is the exact one you will receive. Please refer to the scale photo for accurate sizing (scale rule squares/cube = 1cm).

 

Fossil Overview:

  • Species: Eurhodia trojana
  • Common Name: Fossil Sea Urchin / Echinoid
  • Geological Period: Eocene
  • Stage: Bartonian to Priabonian (approx. 41 to 34 million years ago)
  • Formation: Ocala Limestone
  • Location: Ocala, Florida, USA
  • Type: Chalk fossil echinoid
  • Condition: Excellent detail with identifiable test features

 

Geology & Depositional Environment:

The fossil comes from the Ocala Limestone Formation, which is a marine carbonate unit composed primarily of chalky, soft white limestone. This formation was deposited in a warm, shallow tropical marine environment, part of a continental shelf system during the Eocene. The high calcium carbonate content suggests a calm, clear-water depositional setting, rich in marine invertebrates including echinoids, mollusks, and corals.

 

Taxonomy & Classification:

  • Phylum: Echinodermata
  • Class: Echinoidea
  • Order: Cassiduloida
  • Superfamily: Cassidulacea
  • Family: Cassidulidae

 

Morphological Features:

Eurhodia trojana is characterized by:

  • A sub-oval, slightly domed test
  • Bilateral symmetry
  • Peristome (mouth opening) located anteriorly
  • Petaloid ambulacra (flower-like pore arrangement)
  • A flattened oral surface and gently convex aboral surface These morphological features are consistent with adaptation to a life semi-buried in soft, carbonate-rich sediment, where the echinoid fed as a deposit feeder.

 

Notable Information:

Eurhodia trojana is a rare species within the fossil record, especially in the Ocala Formation. This specimen is a fine example of preservation in chalky matrix, showcasing remarkable detail and structure. Specimens like this are highly sought after by collectors and institutions alike for their geological and paleontological significance.

 

Why Buy From Us?

  • All fossils are 100% genuine and carefully curated.
  • Comes with a Certificate of Authenticity.
  • The exact specimen shown is the one you will receive.
  • Secure packaging and fast dispatch.

Explore the wonders of prehistoric life with this rare and elegant Eocene echinoid fossil. A perfect addition to any fossil collection or a unique natural history gift.

(Actual as seen)

Only 1 left in stock

SKU: UF4628 Category:

Description

This listing is for a RARE Fossil Echinoid – Eurhodia trojana, a beautifully preserved specimen from the Eocene Epoch, discovered in the Ocala Limestone Formation, Florida, USA.

This is a 100% genuine fossil echinoid and comes with a Certificate of Authenticity. The specimen pictured is the exact one you will receive. Please refer to the scale photo for accurate sizing (scale rule squares/cube = 1cm).

 

Fossil Overview:

  • Species: Eurhodia trojana
  • Common Name: Fossil Sea Urchin / Echinoid
  • Geological Period: Eocene
  • Stage: Bartonian to Priabonian (approx. 41 to 34 million years ago)
  • Formation: Ocala Limestone
  • Location: Ocala, Florida, USA
  • Type: Chalk fossil echinoid
  • Condition: Excellent detail with identifiable test features

 

Geology & Depositional Environment:

The fossil comes from the Ocala Limestone Formation, which is a marine carbonate unit composed primarily of chalky, soft white limestone. This formation was deposited in a warm, shallow tropical marine environment, part of a continental shelf system during the Eocene. The high calcium carbonate content suggests a calm, clear-water depositional setting, rich in marine invertebrates including echinoids, mollusks, and corals.

 

Taxonomy & Classification:

  • Phylum: Echinodermata
  • Class: Echinoidea
  • Order: Cassiduloida
  • Superfamily: Cassidulacea
  • Family: Cassidulidae

 

Morphological Features:

Eurhodia trojana is characterized by:

  • A sub-oval, slightly domed test
  • Bilateral symmetry
  • Peristome (mouth opening) located anteriorly
  • Petaloid ambulacra (flower-like pore arrangement)
  • A flattened oral surface and gently convex aboral surface These morphological features are consistent with adaptation to a life semi-buried in soft, carbonate-rich sediment, where the echinoid fed as a deposit feeder.

 

Notable Information:

Eurhodia trojana is a rare species within the fossil record, especially in the Ocala Formation. This specimen is a fine example of preservation in chalky matrix, showcasing remarkable detail and structure. Specimens like this are highly sought after by collectors and institutions alike for their geological and paleontological significance.

 

Why Buy From Us?

  • All fossils are 100% genuine and carefully curated.
  • Comes with a Certificate of Authenticity.
  • The exact specimen shown is the one you will receive.
  • Secure packaging and fast dispatch.

Explore the wonders of prehistoric life with this rare and elegant Eocene echinoid fossil. A perfect addition to any fossil collection or a unique natural history gift.

Additional information

Era

Eocene
Origin

United States

Eocene Information

The Eocene Period (56–33.9 million years ago) was a time of warm global temperatures and the rapid evolution of mammals following the extinction of the dinosaurs. The climate was hot and humid, with lush rainforests covering much of the planet, even near the poles. Mammals diversified into new ecological roles, with early primates, whales (like Basilosaurus), large herbivores, and carnivores emerging. Birds and reptiles also thrived, and the first grasses began spreading, setting the stage for later grassland ecosystems. By the late Eocene, the Earth’s climate cooled significantly, leading to the formation of the first Antarctic ice sheets and the eventual transition to the drier, cooler Oligocene Period.

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