†Cloacaspis ceryx ceryx Fortey 1974 (trilobite)
Artiopoda - Olenida - Olenidae
Alternative combination: Balnibarbi ceryx ceryx
Full reference: R. A. Fortey. 1974. The Ordovician trilobites of Spitsbergen. I. Olenidae. Norsk Polarinstitutt Skrifter 160:1-129
Belongs to Cloacaspis ceryx according to M. J. Hopkins 2019
See also Fortey 1974
Sister taxon: Cloacaspis ceryx anataphra
Type specimen: SMA 84034, a cephalon/head (cranidium)
Ecology: fast-moving low-level epifaunal carnivore
Distribution: found only at Zone V1b, Ny Friesland (Ordovician of Norway)