Cyphaspides sp
Trilobites Order Proetida, Family Aulacopleuridae
Geological Time: Middle Devonian
Size (25.4 mm = 1 inch): Trilobite is 30 mm long by 28 mm wide (counting spines) on a 75 mm by 90 mm matrix
Fossil Site: Jorf, Morocco
Code: 14060
Price: Sold
 Description:
Unusual example of a member of the Order Proetida, Family Aulacopleuridae
with many fine details present. It comes from a new location known
as Jorf in Morocco, close to the site from which the polished goniatite
ammonites originate. The preservation of the exoskeleton is reminiscent
of them in terms of texture, unlike many trilobites from Morocco.
It has similarities to Cyphaspis (see my other listings) with the
same bulbous cranidium, stalked eyes, and granulose appearance.
It is a rarely-seen taxon, and most like this one are usually found
somewhat disarticulated. The matrix from Jorf is often harder than
that from some other sites, making preparation more difficult.
The preparation that allowed the cephalon and the fringing spines
and most all the dramatic pleurals and genals to be prepared free
of matrix took over ONE HUNDRED HOURS, an effort I am sure you
will agree was well worth it. With the advent of a reliable
source of electricity in Morocco, the quality of preparation has
improved dramatically over the past few years. While I used to
refer to trilobites prepared in a mode similar to this as flying,
I feel a new term is warranted by the preparation now coming into
vogue. The rose tint to the trilobite is entirely natural, and
adds an aesthetically pleasing touch to the stunning presentation
of this unique piece.. |
