Here is a good and inexpensive example of the trilobite species Coosella kieri. Coosella kieri is one of the rarest taxa of the Weeks Formation in Utah. The new species Coosella kieri was just in 2011 described by Robison & Babcock. And in fact Coosella kierii was not already mentioned in Shanan Peters may unpublished dissertation from 2003*. *http://www.geology.wisc.edu/~peters/pdfs/Weeks.pdf | |||
Location: | Millard Co., Utah, USA | ||
Size trilobite: | about 35 mm long | ||
Age: | Upper Cambrian, Weeks Fm., (about. 518 Mill. y.o.) |