Here is a Nevada Trilobite of the species Olenellus gilberti from the lower Cambrian Pioce Shale Formation. This specimen as also the long terminal spine preserved.
|Ruin Wash, Lincoln Co., Nevada, USA|
|Size Matrix:||about 87 x 70 mm|
|Age:||Lower Cambrian, Pioche Formation, Combined Metals Member (about520 Ma)|