Description: Here is a relatively large specimen of the species Olenus gibbosus on this slab of Upper Cambrian orsten limestone from Sweden. These limestones occur as concretions in the alum shale and were sorted out during the mining of the shale. This piece comes from an old collection from the 1980s. Fortunately, the piece was not prepared at that time, so that it could be prepared with modern preparation techniques recently.

The trilobit was carefully fine prepared and present itself harmoniously on natural matrix.

As with all my fossils, this specimen comes with a signed certificate of authenticity confirming the fossil’s authenticity.