Basseiarges and Barrandeops Museum Trilobites

Natural Death Assemblage

Basseiarges mellishae

Note: Per recent 2013 reference below: newly erected genus is Basseiarges and new species is mellishae after Dr Martin Basse a researcher of Devonian trilobites

Trilobites Order Lichida, Family Lichidae, Subfamily Trochurinae

Barrandeops sp

Order Phacopida, Family Phacopidae

Geological Time: Middle Devonian

Siz: Trilobites are, Basseiarges: 23 mm long by 25 mm wide (counting spines) Barrandeops: 28 mm long by 14 mm wide- 55 mm long by 28 mm wide on a 165 mm by 130 mm matrix

Fossil Site: Jorf, Morocco

Fossil Code: 17081

Price: Sold

Basseiarges and Barrandeops Museum TrilobitesDescription: This death assemblage is composed of one example of the unusual trilobite Basseiarges mellishae in association with no less than FIVE examples of the phacopid trilobite Barrandeops. The plaque from a recently discovered location known as Jorf in, close to the site from which the polished goniatie ammonites originate. The preservation of the exoskeleton is reminiscent of them in terms of texture, unlike many trilobites from Morocco. The flattened round shape and spines along the edge of the pleural and pygidiial lobes indicate to me that Basseiarges was a dweller of the seafloor. The body configuration would have served the same function as snowshoes. These unfortunates became buried rapoidly, perhaps during a storm, with little post mortem transport. It is a NATRAL association and not a composite. I include two inprep photos, one of which shows the single crack in the reverse side.

Reference: Batalleria, 18, March 2013, pp 15-24

Trilobite Purchase Information

click trilobite pictures to enlarge

Below: Trilobite in preparation photos

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