Ptychopariidae

Ptychopariidae is a family of trilobites, containing the following genera:


 * Achlysopsis
 * Altikolia
 * Altitudella
 * Amecephalites
 * Asthenopsis
 * Austinvillia
 * Balangcunaspis
 * Bashania
 * Bathyholcus
 * Bathyocos
 * Billingsaspis
 * Binodaspis
 * Blairella – see Neoblairella
 * Bolaspidina
 * Brunswickia
 * Bulkuraspis
 * Caborcella
 * Callidaspina
 * Callidaspis
 * Cathayanella
 * Champlainia
 * Chengshanaspis
 * Chinghisicus
 * Chunghwaella
 * Conopolus
 * Dananzhuangia
 * Deltina
 * Douposiella
 * Elrathina
 * Entsyna
 * Eodouposiella
 * Eokochaspis
 * Eosoptychoparia
 * Eospencia
 * Eurostina
 * Finecrestia
 * Gaotanaspis
 * Gaphuraspis
 * Gedongaspis
 * Gunnia
 * Hadrocephalites
 * Hadrokraspedon
 * Hamptonella
 * Hejinaspis
 * Hemicricometopus
 * Hewenia
 * Holasaphus
 * Horbusonia
 * Illtydaspis
 * Jangudaspis
 * Jialaopsis
 * Jianchangia
 * Jimaoshania
 * Jiumenia
 * Kermanella
 * Kochaspis
 * Kochiella
 * Kochiellina
 * Kochina
 * Kounamkites
 * Kunmingaspis
 * Laminurus
 * Laoyingshania
 * Lianglangshania
 * Loriella
 * Luguoia
 * Luxella
 * Lyriaspis
 * Majiangia
 * Manailina
 * Meitania
 * Metisella – see Rasettiella
 * Mexicella
 * Monanocephalus
 * Mopanshania
 * Mrassina
 * Mufushania
 * Nangaocephalus
 * Nangaoia
 * Nangaops
 * Nanoqia
 * Nassovia
 * Nelsonia – see Paleonelsonia
 * Neoblairella
 * Neoregina
 * Neokochina
 * Nyella – Palmerara
 * Olenekina
 * Onchocephalites
 * Ontoella
 * Orienturus
 * Orlovia
 * Orloviella
 * Pachyaspidella
 * Pachyaspis
 * Palmerara
 * Palmeraspis
 * Paleonelsonia
 * Panacus
 * Paraeosoptychoparia
 * Paragunnia
 * Paramecephalus
 * Paraperiomma
 * Paraplagiura
 * Parapoulsenia
 * Parashuiyuella
 * Paraziboaspis
 * Perimetopus
 * Periommella
 * Piazella
 * Pingluaspis
 * Piochaspis
 * Plagiura
 * Pokrovskayaspis
 * Poulsenella
 * Poulsenia
 * Poulseniella
 * Probowmania
 * Probowmaniella
 * Probowmanops
 * Proliostracus
 * Promeitania
 * ?Protohedinia
 * Pseudoliostracus
 * Psilostracus
 * Ptychoparella
 * Ptychoparia
 * Qiaotouaspis
 * Qingshuiheia
 * Rasettiella
 * Reedus
 * Regina – Neoregina
 * Regius
 * Runnania
 * Salankanaspis
 * Sanhuangshania
 * Sanwania
 * Schistometopus
 * Semisphaerocephalus
 * Seriaspis
 * Shanganella
 * Shantungaspis
 * Shuiyuella
 * Sinoptychoparia
 * Spencella
 * Spencia
 * Stoecklinia
 * Sujaraspis
 * Suluktella
 * Taijiangia
 * Taniaspidella
 * ?Townleyella
 * Trachyostracus
 * Trigonyangaspis
 * Tukalandaspis
 * ?Ulrichaspis
 * Variopelta
 * Vermontella
 * Vica
 * Volocephalina
 * Wanhuaia
 * Weijiaspis
 * Wuhaina
 * Xiangshanaspis
 * Xingrenaspis
 * Yaoyiayuella
 * Yohoaspis
 * Yuknessaspis
 * Ziboaspidella
 * Ziboaspis