Here is a very nice specimen of a Utah trilobite of the species Modocia typicalis from the Marjum Formation. The trilobite shows a interesting pathology at the last macro pleural segment before the pygidium. There is no pleural tip on the right side. | |||
Location: | House Range, Utah, USA | ||
Size matrix: | about 100 x 70 mm | ||
Age: | Mid. Cambrian, Marjum Fm. (ca. 515 Mill. Jahre) (about 515 Mill. Jahre) |