Description
**Rare Flying Hollardops mesocristata Trilobite**
This genuine fossil is an A-grade Hollardops mesocristata trilobite from the Eifelian Stage of the Middle Devonian. It was collected from the Timrhanrhart Formation at El Ahssr in the Foum Zguid region of Morocco, a locality recognised for beautifully preserved Devonian marine fossils. The specimen has been prepared in the dramatic flying display style, with the trilobite elevated from its matrix so its outline and three-dimensional form can be appreciated from several angles. The photographs show the exact fossil you will receive and should be used for full sizing, condition and presentation details.
**Middle Devonian Geology**
The Eifelian Stage dates to approximately 393 to 388 million years ago. During this interval, the area that is now southern Morocco lay beneath a warm sea along the northern margin of Gondwana. Fine marine sediments accumulated across the seabed and eventually hardened into the rocks of the Timrhanrhart Formation. These strata preserve a diverse record of marine life, including trilobites, brachiopods, cephalopods and other invertebrates that occupied Devonian shelf environments.
Rapid burial protected the mineralised exoskeleton of this trilobite from complete destruction. Over immense spans of time, compaction, chemical alteration and mineral replacement produced the fossil now exposed by skilled preparation. Its rock matrix is therefore part of the geological setting in which the animal was preserved, while natural colour and texture reflect both original anatomy and later mineralisation.
**Hollardops Anatomy and Adaptation**
Hollardops belongs to the order Phacopida and the family Acastidae. Like other trilobites, its dorsal exoskeleton is divided into three longitudinal lobes and three principal body regions: the cephalon or head shield, the articulated thorax and the pygidium or tail shield. This segmented construction gave the living animal flexibility as it moved across the sea floor.
The cephalon carries a prominent central glabella and paired compound eyes. Phacopid trilobites are particularly famous for schizochroal eyes, a distinctive visual system made from relatively large calcite lenses separated from one another. These eyes would have helped the animal detect movement and changes in light within its marine habitat. Defined thoracic segments allowed movement and defensive enrolment, while the pygidium completed the streamlined, armoured body form.
The term flying describes the modern preparation and display, not the behaviour of the living trilobite. Careful removal of surrounding matrix creates an elevated fossil that appears to float above its base. This labour-intensive preparation highlights the free-standing margins, segmentation and sculptural character of the specimen, producing a striking cabinet piece.
**A-Grade Fossil for Display and Study**
This carefully chosen trilobite offers both visual impact and genuine palaeontological interest. It is suitable for a fossil cabinet, geology collection, educational display or natural history interior. Collectors value Hollardops for its balanced proportions, recognisable phacopid features and strong association with the classic Devonian deposits of Morocco.
As a natural fossil that has been professionally prepared, the specimen may display matrix, mineral staining, preparation marks, small cracks, stabilised or restored areas, minor chips and variation in surface texture. These features are normal for an excavated and prepared trilobite. Please study the photographs, which document the actual specimen supplied rather than a stock example.
**Certificate of Authenticity**
The fossil includes a generic Certificate of Authenticity card with a lifetime guarantee. This confirms that the supplied piece is a genuine fossil and records its stated identification and provenance. Its combination of authentic Eifelian age, Timrhanrhart Formation locality, A-grade preservation and dramatic flying preparation makes it an excellent acquisition for an experienced trilobite collector or a memorable gift for anyone fascinated by prehistoric marine life.









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