Mollisonia
Mollisonia is a genus of epifaunal detritivorous arthropod. Evidence. Species are known from the Cambrian Burgess Shale, Langston Formation, and Wheeler Shale of North America, as well as the Chengjiang Biota of China. Remains attributed to the genus are also known from the Ordovician Fezouata Formation of Morocco and Greenland. Conjectured taxonomy. An observation published in 2019 suggests this genus is a basal chelicerate, closer to crown group Chelicerata than members of Habeliida. It is suggested to be closely related to "Corcorania", "Ecnomocaris", and "Thelxiope", which together form the clade Mollisoniida.