Trilobita - Ptychopariida - Lonchocephalidae

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

Sister taxa: Aethia, Amiaspis, Calymenidius, Caulaspina, Durinia, Glaphyraspis, Graciella, Hawkinsaspis, Kuraspis, Kuraspoides, Lonchocephalus, Neoglaphyraspis, Nordia, Olegaspis, Pseudotalbotina, Quebecaspis, Raashellina, Talbotina, Terranovella, Trymataspis, Weeksina

Subtaxa: Monosulcatina laeve

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Type: Monosulcatina laeve

Ecology: fast-moving low-level epifaunal carnivore