Wikipedia
Archaeagnostus
Archaeagnostus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during from the terminal Toyonian to early Amgaian. Species belonging to this genus have been found in Eastern North America, Newfoundland, the Henson Gletscher Formation in Greenland, the Nekekit and Molodo Rivers in Eastern Siberia, and in Guizhou, China.