Termierella (Brevitermierella) cf. brevifrons Hupe 1953

This species is defined by thick and large palpebral lobes that stand out in relation to the cranidium as a whole. They also have a clear pre-glabellar field in front of the glabella. The first specimen shows a very well preserved cephalon (head) and a preserved left genal spine.  The close-up shows unusually rare coloration.  The second trilobite though smaller shows a well preserved pygidium which is a small button-like feature at the posterior end of the trilobite. The thorax and glabella (central "nose-like" feature) are well preserved in both specimens.  The photos show the narrow body of these trilobites whose thoracic axis (the central part of the thorax) is just as wide as the pleural axes (either side of the thoracic axis).  The first specimen is 1.5 inches, the second one is approximately 5/8 of an inch.  

Brevitermiella has a longer, narrower glabella than the T.Termierella which has a shorter glabella and wider cephalon with the palpebral lobes that are wider distally from the glabella than in this particular genus.

The palpebral lobes are strongly marked off on this species so that there is a suture that defines the outline of the lobes unlike most other trilobites. As an added bonus this specimen has clear indications of a color pattern that maybe actual coloration in life something unheard of among Cambrian trilobites.  There is nothing to suggest that this is an artifact of preservation as the pattern is not found on the matrix.  The pattern suggests some kind of camouflage.   

The above shows the clear sectioning by the suture that defines the palpebral lobe clearly raised left of the glabella, and a third section only slightly raised below the lobe and to the left of the glabella.  The right side of the cranidium is not complete.  The counterpart shows this with even more clarity (below the glabella in the photo). 

Kenjiro 2009.5.2. (Revision 2019.11.10.)