Trilobita - Ptychopariida - Olenidae

Parent taxon: Olenidae according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Acerocare, Aciculolenus, Angelina, Apoplanias, Balnibarbiinae, Beltella, Boeckaspis, Chekiangaspis, Ctenopyge, Highgatella, Huangshiaspis, Hypermecaspidinae, Hypermecaspis, Inkouia, Jujuyaspis, Leiobienvillia, Leptobenthos, Leptoplastides, Leptoplastinae, Neolenus, Oleninae, Olenus, Parabolina, Parabolinella, Parabolinina, Parabolinites, Paraplicatolina, Peltocare, Peltura, Pelturinae, Plicatolininae, Prohedinella, Protopeltura, Rhodonaspis, Saltaspis, Sphaerophthalmella, Sphaerophthalmus, Westergaardites, Westergardia, Wujiajiania

Subtaxa: Acerocarina glaber

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Ecology: fast-moving low-level epifaunal carnivore