†Nileus glazialis costatus Fortey 1975 (trilobite)
Trilobita - 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 glazialis according to R. A. Fortey 1975
Sister taxa: none
Type specimen: PMO NF 1651, a pygidium
Ecology: fast-moving low-level epifaunal carnivore
Distribution: there are no occurrences of Nileus glazialis costatus in the database