Perhaps the most desired Lower Cambrian trilobite genus found
in the Western United States is the Bristolia. It is distinguished
by the large, elegant, regal spines, which adorn the cephalon,
thorax and pygidium. The distinctive shape of the various species
cephalons is the most obvious and inspiring characteristic.
Until recently, Bristolias were rarely found complete, and quite
difficult to acquire. With some industrious exploring and digging,
a few have become available, including the one I am now presenting.
Significantly, the first Bristolia I have ever offered online.
begin, it was prepared by ace trilobite specialist, Dave Comfort
of Canada. By Bristolia standards it is a large fully adult specimen.
Of particular note are the magnificent, dark, fully inflated genal,
marcropleural and tail spines. The tip of the left genal spine
is missing. The solid limestone plate was cracked through the thorax
and repaired. A bit of detail was lost on the thorax during the
air abrasion. Considering the complexity and fragility of this
Bristolia, the overall preservation is remarkable. If the acquisition
of a quality Bristolia has been on your wish list, I suggest you
take advantage of this opportunity quickly. It is the only one
I have to offer.