(Internal #F704-1) You are bidding on this natural, incomplete TRILOBITE (Elrathia Kingi) from Utah, average 1-1/4" long x 7/8" wide x 1/16 to 1/8" thick. Location: House Range, Antelope Springs Utah Formation: Wheeler Shale Age: Mid Cambrian 550 million years old Trilobites are an extinct form of marine life occurring in the Wheeler shale. These many legged arthropods roamed the sandy bottoms of the seas coral reefs in search of food. Trilobites were the first invertebrate form of life on earth. THIS ITEM IS A DARK GRAY COLOR as are all the fossils found in this Formation. Click on our Store tag for similar items. WE SHIP WORLDWIDE, see the chart for postage to your country.