This is a beautiful Nankinolithus Trilobite from Morocco, North Africa. The trilobite itself measures 1 1/4 inches in length 1 1/4 inches in height. This trilobite dates back to the Ordovician time period approximately 475 million years ago. We have a variety of trilobites available so be sure to check out our other listings! PLEASE NOTE: We appreciate the business of our international customers! THANK YOU VERY MUCH FOR LOOKING! Check out the other items in our store at. Put us on your favorite sellers list and watch our auctions that end each Saturday! From Wikipedia, the free encyclopedia. For the robot vacuum cleaner, see. Meaning “three lobes” are a well-known fossil group of. The first appearance of trilobites in the fossil record defines the base of the. , and they flourished throughout the lower. Era before beginning a drawn-out decline to extinction when, during the. Almost all trilobite orders, with the sole exception of. Trilobites finally disappeared in the. At the end of the. The trilobites were among the most successful of all early animals, roaming the oceans for over 270 million years. When trilobites first appeared in the fossil record they were already highly diverse and geographically dispersed. Because trilobites had wide diversity and an easily. An extensive fossil record was left behind, with some 17,000 known species spanning. The study of these fossils has facilitated important contributions to. Trilobites are often placed within the. Subphylum Schizoramia within the superclass. (equivalent to the Arachnata). Are found in the literature. Trilobites had many life styles; some. Moved over the sea-bed. Most life styles expected of modern marine arthropods are seen in trilobites, with the possible exception of. (where there is still scientific debate). Some trilobites particularly the family. Are even thought to have evolved a. Relationship with sulfur-eating bacteria from which they derived food. The item “Nankinolithus TRILOBITE Fossil 475 Million Years old #3183 19o” is in sale since Sunday, July 9, 2017. This item is in the category “Collectibles\Rocks, Fossils & Minerals\Fossils\Arthropods\Trilobites”. The seller is “lmaest” and is located in Salem, Utah. This item can be shipped worldwide.