Basseiarges mellishae Lichida Trilobite

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

Geological Time: Middle Devonian

Size (25.4 mm = 1 inch): Trilobite is 19 mm long by 16 mm wide (counting spines) on a 75 mm by 52 mm matrix.

Fossil Site: Jorf, Morocco

Fossil Code: 16044

Price: $295.00

Basseiarges mellishaeDescription: This unusual trilobite comes from a recently discovered location known as Jorf in Morocco, 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 first examples I have come across were at the 2012 Tucson show, and were exhibited by the premier US importer of Moroccan specimens. The price was somewhat stratospheric. With the passage of time more material came to light. Here is a fine example of the taxon which has been assigned a new genus and species Basseiarges mellishae. The flattened round shape and spines along the edge of the pleural and pygidiial lobes indicate to me a dweller of the seafloor. The body configuration would have served the same function as snowshoes. See my other offerings for multiple examples here and here.

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

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