†Nileus orbiculatoides svalbardensis Fortey 1975 (trilobite)
Artiopoda - Asaphida - Nileidae
Full reference: R. A. Fortey. 1975. The Ordovician trilobites of Spitsbergen. II. Asaphidae, Nileidae, Raphiophoridae and Telephinidae of the Valhollfonna Formation. Norsk Polarinstitutt, Skrifter 162:1-125
Belongs to Nileus orbiculatoides according to R. A. Fortey 1975
Sister taxa: none
Type specimen: PMO NF 2412, a cephalon/head (cranidium)
Ecology: fast-moving low-level epifaunal carnivore
Distribution: found only at Zone V4a, Ny Friesland ( of Norway)