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Pachyaspis Resser 1938 (trilobite)

Trilobita - Ptychopariida - Ptychopariidae

PaleoDB taxon number: 20782

Parent taxon: Ptychopariidae according to P. A. Jell and J. M. Adrain 2002

Sister taxa: Achlysopsis, Altikolia, Altitudella, Amecephalites, Asthenopsis, Austinvillia, Balangcunaspis, Bathyholcus, Bathyocos, Billingsaspis, Binodaspis, Bolaspidina, Braintreella, Brunswickia, Caborcella, Cathayanella, Chengshanaspis, Conopolus, Danzhaina, Deltina, Douposiella, Elrathina, Eokaotaia, Eokochaspis, Eoptychoparia, Eosoptychoparia, Eospencia, Gaphuraspis, Gedongaspis, Gunnia, Hadrocephalites, Illtydaspis, Jangudaspis, Jiagouia, Jialaopsis, Jianchangia, Jiumenia, Kaotaia, Kochaspis, Kochiella, Kochina, Kounamkites, Kunmingaspis, Laminurus, Laoyingshania, Lyriaspis, Meitania, Mexicella, Monanocephalus, Mufushania, Nangaoia, Nangaops, Neoblairella, Neoregina, Olenekina, Onchocephalites, Paleonelsonia, Palmerara, Panacus, Paramecephalus, Paraperiomma, Parapoulsenia, Paraziboaspis, Piaziella, Pingluaspis, Plagiura, Plesiamecephalus, Poulsenella, Poulsenia, Probowmania, Probowmaniella, Probowmanops, Proliostracus, Psilostracus, Ptychoparella, Ptychopariinae, Qiaotouaspis, Ruichengella, Sanwania, Schistometopus, Semisphaerocephalus, Shantungaspis, Shuiyuella, Sinoptychoparia, Spencella, Spencia, Stoecklinia, Suluktella, Syspacephalus, Tongshania, Townleyella, Trigonyangaspis, Tukalandaspis, Ulrichaspis, Variopelta, Vermontella, Volocephalina, Wanhuaia, Weijiaspis, Wuhaina, Xilingxia, Xingrenaspis, Yaojiayuella, Yuknessaspis, Ziboaspidella, Ziboaspis

Subtaxa: Pachyaspis benxiensis, Pachyaspis gallagari, Pachyaspis longa

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Ecology: fast-moving low-level epifaunal carnivore