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Hollardops mesocristata Fossil Trilobite Timrhanrhart Formation Devonian Morocco Genuine Specimen with COA
Hollardops mesocristata Fossil Trilobite Timrhanrhart Formation Devonian Morocco Genuine Specimen with COA - Image 2

Hollardops mesocristata Fossil Trilobite Timrhanrhart Formation Devonian Morocco Genuine Specimen with COA

Original price was: USD $101.32.Current price is: USD $91.19.

Authentic Hollardops mesocristata Trilobite – Morocco

This listing offers a genuine Hollardops mesocristata trilobite fossil from the Timrhanrhart Formation, Eifelian Stage of the Middle Devonian, El Ahhsr, Foum Zguid, Morocco. The fossil pictured is the exact specimen you will receive, photographed with a 1cm scale cube for accurate size reference. All of our fossils are 100% authentic and supplied with a Certificate of Authenticity, ensuring its provenance, scientific importance, and collectible value.

This Devonian trilobite has been expertly prepared by a skilled Moroccan specialist with years of experience in fossil preparation. Their craftsmanship carefully exposes the fine details of the fossil without compromising its natural integrity. Purchasing this specimen also supports ethical and sustainable fossil trade, helping to provide fair income for local preparers and their families.

Geological Context – Timrhanrhart Formation

The Timrhanrhart Formation is a celebrated fossil-bearing unit of Morocco’s Middle Devonian strata, dating to the Eifelian Stage (approx. 393–388 million years ago). At this time, Morocco was part of a shallow tropical marine environment, home to reefs, brachiopods, ammonoids, and diverse arthropods.

The fine-grained limestone deposits at El Ahhsr near Foum Zguid are globally renowned for preserving trilobites in exquisite three-dimensional detail. The combination of ancient marine sedimentation and careful modern preparation allows for specimens like Hollardops mesocristata to be presented with extraordinary clarity.

The Trilobite – Hollardops mesocristata

Hollardops mesocristata belongs to the order Phacopida and the family Asteropygidae. It is one of the most iconic Moroccan trilobites, admired for its distinctive morphology and advanced anatomical features.

This species is characterised by:

  • Large crescent-shaped compound eyes, made up of hundreds of calcite lenses, allowing superb vision in Devonian seas.
  • Broad cephalon (head shield) with a prominent glabella.
  • Elongated thorax with multiple articulated segments, preserving fine details of exoskeletal ornamentation.
  • Well-defined pygidium (tail shield), often displaying ridges and segmentation.

These traits make Hollardops both scientifically significant and highly collectible, representing one of the most advanced trilobites of its era.

Morphological Features of this Specimen

This carefully prepared fossil shows:

  • Three-dimensional articulation, with natural body curvature.
  • Detailed compound eyes, revealing the calcite lens structure.
  • Exoskeletal ornamentation, including fine ridges and surface granulation.
  • Complete cephalon, thorax, and pygidium, all preserved in striking relief.

The exceptional preparation highlights the fossil’s intricate details, making it not only a scientifically valuable specimen but also an impressive display piece.

Scientific and Collectible Importance

Hollardops mesocristata trilobites are highly prized by collectors for their combination of rarity, preservation quality, and aesthetic appeal. They illustrate the evolutionary success of Phacopid trilobites during the Devonian, a period often called the “Age of Fishes” due to its extraordinary marine biodiversity.

For researchers, these fossils shed light on trilobite vision, ecological roles, and morphological variation. For collectors, they represent some of the finest fossils available from Morocco, admired for both their natural beauty and historical significance.

Key Details of this Specimen

  • Species: Hollardops mesocristata (Phacopid Trilobite)
  • Origin: Timrhanrhart Formation, El Ahhsr, Foum Zguid, Morocco
  • Age: Middle Devonian, Eifelian Stage (~393–388 million years ago)
  • Fossil Type: Complete trilobite fossil
  • Authenticity: 100% genuine fossil with Certificate of Authenticity
  • Preparation: Expertly prepared by a trusted Moroccan specialist
  • Exact Fossil: The photographed specimen is the one you will receive
  • Sizing: Please see photos with 1cm scale cube for accurate measurements

This Hollardops mesocristata trilobite fossil is a striking, ethically prepared, and scientifically important specimen that will make a valuable addition to any fossil collection.

 

(Actual as seen)

Only 1 left in stock

SKU: UF5802 Category:

Description

Authentic Hollardops mesocristata Trilobite – Morocco

This listing offers a genuine Hollardops mesocristata trilobite fossil from the Timrhanrhart Formation, Eifelian Stage of the Middle Devonian, El Ahhsr, Foum Zguid, Morocco. The fossil pictured is the exact specimen you will receive, photographed with a 1cm scale cube for accurate size reference. All of our fossils are 100% authentic and supplied with a Certificate of Authenticity, ensuring its provenance, scientific importance, and collectible value.

This Devonian trilobite has been expertly prepared by a skilled Moroccan specialist with years of experience in fossil preparation. Their craftsmanship carefully exposes the fine details of the fossil without compromising its natural integrity. Purchasing this specimen also supports ethical and sustainable fossil trade, helping to provide fair income for local preparers and their families.

Geological Context – Timrhanrhart Formation

The Timrhanrhart Formation is a celebrated fossil-bearing unit of Morocco’s Middle Devonian strata, dating to the Eifelian Stage (approx. 393–388 million years ago). At this time, Morocco was part of a shallow tropical marine environment, home to reefs, brachiopods, ammonoids, and diverse arthropods.

The fine-grained limestone deposits at El Ahhsr near Foum Zguid are globally renowned for preserving trilobites in exquisite three-dimensional detail. The combination of ancient marine sedimentation and careful modern preparation allows for specimens like Hollardops mesocristata to be presented with extraordinary clarity.

The Trilobite – Hollardops mesocristata

Hollardops mesocristata belongs to the order Phacopida and the family Asteropygidae. It is one of the most iconic Moroccan trilobites, admired for its distinctive morphology and advanced anatomical features.

This species is characterised by:

  • Large crescent-shaped compound eyes, made up of hundreds of calcite lenses, allowing superb vision in Devonian seas.
  • Broad cephalon (head shield) with a prominent glabella.
  • Elongated thorax with multiple articulated segments, preserving fine details of exoskeletal ornamentation.
  • Well-defined pygidium (tail shield), often displaying ridges and segmentation.

These traits make Hollardops both scientifically significant and highly collectible, representing one of the most advanced trilobites of its era.

Morphological Features of this Specimen

This carefully prepared fossil shows:

  • Three-dimensional articulation, with natural body curvature.
  • Detailed compound eyes, revealing the calcite lens structure.
  • Exoskeletal ornamentation, including fine ridges and surface granulation.
  • Complete cephalon, thorax, and pygidium, all preserved in striking relief.

The exceptional preparation highlights the fossil’s intricate details, making it not only a scientifically valuable specimen but also an impressive display piece.

Scientific and Collectible Importance

Hollardops mesocristata trilobites are highly prized by collectors for their combination of rarity, preservation quality, and aesthetic appeal. They illustrate the evolutionary success of Phacopid trilobites during the Devonian, a period often called the “Age of Fishes” due to its extraordinary marine biodiversity.

For researchers, these fossils shed light on trilobite vision, ecological roles, and morphological variation. For collectors, they represent some of the finest fossils available from Morocco, admired for both their natural beauty and historical significance.

Key Details of this Specimen

  • Species: Hollardops mesocristata (Phacopid Trilobite)
  • Origin: Timrhanrhart Formation, El Ahhsr, Foum Zguid, Morocco
  • Age: Middle Devonian, Eifelian Stage (~393–388 million years ago)
  • Fossil Type: Complete trilobite fossil
  • Authenticity: 100% genuine fossil with Certificate of Authenticity
  • Preparation: Expertly prepared by a trusted Moroccan specialist
  • Exact Fossil: The photographed specimen is the one you will receive
  • Sizing: Please see photos with 1cm scale cube for accurate measurements

This Hollardops mesocristata trilobite fossil is a striking, ethically prepared, and scientifically important specimen that will make a valuable addition to any fossil collection.

 

Additional information

Era

Devonian
Origin

Morocco

Devonian Information

The Devonian Period (419–359 million years ago), known as the "Age of Fishes," was a time of major evolutionary advances in both marine and terrestrial life. The oceans were dominated by armored placoderm fish, early sharks, and lobe-finned fish like Tiktaalik, which had features that helped vertebrates transition to land. Coral reefs flourished, and ammonites became more diverse. On land, the first forests appeared, with early trees like Archaeopteris, leading to a drop in atmospheric carbon dioxide and climate cooling. The first tetrapods (four-legged vertebrates) began evolving from fish, marking a critical step in the evolution of amphibians. The period ended with the Devonian extinction, likely caused by ocean anoxia and climate shifts, wiping out many marine species and reshaping ecosystems.

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