|Here is a exampple of the rare "Weeks Trilobite" species Menomonia sahratiani |
The specuies Menomonia sahratiani was just recently (officially) rediscriped by Robison & Babcock in 2011. This trilobite was also disciped in the unpublished "Shanan Peters Dissertation", 2003 as Nephalicephalus beebe. Infomations of the status of the "Shanan Peters Dissertation" are sparsely.
|Millard Co., Utah, USA|
|Size trilobite:||about 12 mm long|
|Age:||Upper Cambrian, Weeks Fm., (about. 518 Mill. y.o.)|