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Large diacalymene trilobite fossil – ordovician marine arthropod from morocco – exceptional size & detail – certificate included

Large diacalymene trilobite fossil – ordovician marine arthropod from morocco – exceptional size & detail – certificate included

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

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity

Please note: Some Fossils maybe propped up for photo purposes

 

Name: Diacalymene sp.

Specimen: Trilobite

Age: Ordovician

Location: Morocco

 

Size (picture scale cube=1cm):   93 x 52 x 27mm (3.66 x 2.05 x 1.06 inches)

 

Fossil Trilobites were marine based, and some of the most successful of their time, roaming the oceans for over 270 million years! The name Trilobite, meaning ‘Three Lobes’, was given to them due to their body being made up of three sections. Although it is not uncommon to find whole Trilobite fossils, it is more common to find them incomplete, missing different parts of the three sections they are made up from; head, body & tail. These fossils vary in size, ranging from only a few millimetres to some species measuring in at around 12 inches.

 

ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.

(Actual as seen)

Only 1 left in stock

SKU: FP9920 Category:

Description

This listing features a genuine and impressively sized Diacalymene sp. Trilobite Fossil from the Ordovician Period, found in the fossil-rich beds of Morocco, North Africa.

Trilobites (from the Greek tri = three and lobos = lobes) are a group of extinct marine arthropods that thrived for over 270 million years, dominating the oceans from the Early Cambrian (521 million years ago) until the end of the Permian (252 million years ago). Their segmented, three-lobed exoskeleton makes them one of the most iconic and recognisable fossils, prized by collectors and palaeontologists alike.

This particular specimen, from the genus Diacalymene, showcases the typical morphology of trilobites from the Ordovician (~485–443 million years ago): a prominent head shield (cephalon), a segmented thorax, and a well-preserved tail (pygidium). Trilobites like these are invaluable for understanding marine ecosystems and evolution during the Palaeozoic Era.

Notable Features of this Specimen:

  • Size: Approximately 93 x 52 x 27mm (3.66 x 2.05 x 1.06 inches), a substantial and display-worthy fossil
  • Preservation: Excellent condition with distinct segmentation and natural curvature
  • Geological Age: Ordovician Period – a time of vast marine biodiversity expansion

Trilobites were ecologically diverse, living as scavengers, predators, and filter feeders across ancient seabeds. Some, like the Olenidae, even developed symbiotic relationships with bacteria. Their calcified exoskeletons preserved in sediment allow us to trace their evolutionary journey and classify over 17,000 known species.

These ancient arthropods serve not only as captivating additions to any fossil collection but also as biostratigraphic markers for dating rock layers.

Item Details:

  • Name: Diacalymene sp.
  • Specimen: Trilobite
  • Age: Ordovician Period (~485–443 million years ago)
  • Location: Morocco
  • Size: 93 x 52 x 27mm
  • Scale Reference: Scale cube = 1cm. See photo for sizing.
  • Certificate of Authenticity: Included

ACTUAL AS SEEN:

The photo shows the exact specimen you will receive. Each fossil is professionally selected, hand-checked, and photographed to ensure quality and authenticity.

Please Note:

  • Some fossils may be gently propped for photography purposes.
  • Colours may vary slightly based on lighting or screen settings.
  • We recommend saving or screenshotting your purchased item image, as listings refresh with new specimens once sold.
  • All photos are archived by us for reference and authenticity records.

100% Genuine Fossil – Professionally Selected – Certificate of Authenticity Included

Additional information

Weight 1 g
Era

Ordovician
Origin

Morocco

Ordovician Information

The Ordovician Period (485–443 million years ago) was a time of marine expansion and biodiversity growth, following the Cambrian Explosion. Warm, shallow seas covered much of the continents, supporting trilobites, brachiopods, corals, and the first true reefs. Jawless fish (early vertebrates) diversified, and the first sea scorpions (eurypterids) became dominant predators. On land, the first primitive plants (moss-like bryophytes) began colonizing damp environments. The climate was initially warm, but by the late Ordovician, a major ice age caused a drastic drop in sea levels, triggering the Ordovician-Silurian mass extinction, which wiped out nearly 85% of marine species. Despite this, the period laid the foundation for the rise of more complex ecosystems in the Silurian.

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