Selten angebotene 5,1 cm Marsaisia Trilobit - Tazemmourt, Souss-Lagerstätte - Tierfossil (Ohne mindestpreis)

Rare Almost Complete Huge Specimen of Marsaisia devoillei (Geyer, 2020) | Souss Lagerstätte, Morocco | PAIS9579

• Museum-grade huge adult specimen at NO RESERVE PRICE - UNIQUE OFFER!

Please see the high-resolution photos for full details: specimen in matrix context, isolated view, and magnified close-ups. Additional images available upon request.

OUR GRADING FOR THIS SPECIMEN: 4/5 **** - Complete exuvia of Marsaisia devoillei, a recently described and rare species, 3-D detail - including clearly visible branched pygidial terraces lines, positive/partial negative (cephalon). Lack of librigenea, desarticulated cephalon.
(Graded using our transparent 5-point system — see seller info for details.)

A scientifically significant plate from the Lower Cambrian of Morocco – featuring one Marsaisia devoillei well-preserved adult big specimen.

This exceptional plate features one adult specimen of Marsaisia devoillei, preserved as a almost complete exoskeleton but lacking librigenae – consistent with ecdysial remains (exuvia). Pygidium with strong visible branched terrace ridges, indicating growth lines.
Specimens show 3D relief and natural desarticulation, indicating minimal transport and rapid burial.

Morphology: Marsaisia devoillei is characterized by a long, tapering glabella, narrow pleurae, and a small, semi-circular pygidium – all clearly visible in this specimen. The 3D inflation of the axial lobe and well-preserved facial sutures highlight the exceptional preservation typical of the Souss Lagerstätte. Also note the conspicuous pleural spines with progressive growth up to the eleventh thoracic segment and sigmoidal anterior border of the first thoracic segment.

Scientific Details
Species: Marsaisia devoillei (Geyer, 2020)
Family: Despujolsiidae
Order: Redlichiida
Class: Trilobita

Lithostratigraphy: Upper Amouslek Formation
Age: Lower Cambrian (Series 2, Stage 3) – ca. 520–515 million years old
Biostratigraphy: Daguinaspis Zone, Issendalenian, from the Souss Fossil Lagerstätte
Locality: Tazemmourt Section, Northern slope of the Western Anti-Atlas, Morocco
Collection Code: #PAIS 9579 | Collected: June 2024

Upon request, we will provide the relevant scientific literature to the buyer, including Geyer & Landing (2021), Geyer et al. (2020a), and Geyer (2020).

Dimensions & Condition
Trilobite: 5.1 × 2.6 cm
Matrix: 18 × 11.7 cm
Weight: 566 g
Restoration: Untouched after split.

Why This Stands Out?
• Missing librigenae – evidence of moulting (ecdysis)
• 3D preservation, minimal compression
• Freshly collected, fully documented provenance (PAIS9579, June 2024)
• From the Tazemmourt Section – type locality of the Souss Lagerstätte
• Museum-grade huge adult specimen at no reserve price


Don’t miss this opportunity to own a true milestone in early arthropod evolution.

Questions?
We’re happy to help. Contact us for additional photos, details, or scientific references.
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Shipping
Worldwide registered shipping with a tracking number.

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www.mediterranic.com | www.fezouata.com | www.cambrian521.com

Happy bidding from the Mediterranic team – may the right collector win!