Thank you for viewing! ✧︎* This is a fossil of the very famous 【Trilobite】, and this trilobite is the species 【Elrathia】✨ 【Scientific Name】Elrathia Kingii 【Era】Middle Cambrian Period (approximately 500 million years ago) 【Location】Utah, USA 『Features』 The name comes from the fact that it consists of three leaf-like parts: the axial lobe (middle lobe) running vertically through the center of the body and the rib lobes (side lobes) on either side. Underneath these hard shells that cover the body, there are many legs like those of a pill bug. They are members of the "arthropod" group, which includes beetles, dragonflies, spiders, and crabs. They lived in the seas of the Earth from the Cambrian period (about 550 million years ago) to the end of the Permian period (250 million years ago), and it is said that there were over 20,000 species. They are thought to have mainly crawled along the seabed and eaten mud to obtain nutrients, but some species were also able to swim. The traces of trilobites crawling on the seabed have been found as trace fossils called Cruziana (fossils that show the lifestyle and behavior of organisms). They are considered to be one of the first animals to have vision, and many species have compound eyes like those of a dragonfly. By having vision to quickly detect and escape from enemies, and by protecting themselves with hard shells, trilobites were able to thrive until the end of the Paleozoic era. Trilobites disappeared from this world after the largest mass extinction in the history of life, which occurred at the end of the Permian period. Trilobite fossils are very abundant in the strata that were the sea at the time of the Paleozoic era, and the abundance of fossils and the various forms of trilobites depending on the species have earned them the title of "King of Fossil". Please check the photos. Please see photos 3-6 for the size. 『Shipping and Notes』 ⚠︎ Please be sure to check the profile before purchasing. ・Colors may appear different depending on your environment. ・Please handle with care as it may be damaged by impact. ・Returns and exchanges due to customer reasons, such as incorrect size, cannot be accepted. Please confirm before purchasing. The products on display have been carefully cleaned, but If you are concerned, please check before purchasing. We also have many other minerals, fossils, and other products on display, so Please take a look from #muumuufactory if you like.