Image of a Harpes perradiatus trilobite fossil. This creature existed in the Middle Devonain Period.
While visiting the Gallery of Natural History at the Arizona Historical Society Museum at Papago Park (1300 N. College Ave, Tempe Arizona 85281) I saw this fossil specimen (AHS-NH#20671).
It was found in what is now Alnif, Morocco, North Africa.
Images of museum specimen taken October 2014.
Source to refer to:
http://www.fossilmuseum.net/Fossil_Galleries/TrilobitesMorocco/Harpes-perradiatus/Harpes.htm
http://en.wikipedia.org/wiki/Harpetida