Rare Apianurus kuckersianus Russian trilobite

Apianurus kuckersianus

Geologic Time: Middle Ordovician

Size: 3 inches long, 2.5 inches wide

Fossil Site: Lower Ordovician Wolhovian Level deposits of the Wolchow River region near Saint Petersburg, Russia

Apianurus kuckersianus This is a specimen of an exceptionally rare Russian Ordovician trilobite from the Asery Horizon of the Wolchow River region near Saint Petersburg, Russia, the Odontopleurid Apianurus kuckersianus. It is so rare that few have seen one, with only a few complete specimens known as of 2005. The genus Apianurus was assigned in 1968. Previously, the trilobite was asigned to Acidaspis, another trilobite with odd morphology. Apianurus kuckersianus is thought to be ralated to Devonian trilobite genera Koneprusia, Dicranurus, and Ceratonurus. Note the abundant tubercules present on the the cephalon, thorax, and pygidium. The species name kuckersianus, comes from the Kuckers region of Estonia, where fragmentary remains of the species have been collected.

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Source: EDCOPE Enterprises