Elrathina

Ptychoparioidea is a superfamily of the Ptychopariida order of trilobites.

Taxonomy

• Family Acrocephalitidae
• Family Alokistocaridae
• Family Antagmidae
• Family Asaphiscidae
• Family Atopidae
• Family Bolaspididae
• Family Cedariidae
• Family Changshaniidae
• Family Conocoryphidae
• Family Conokephalinidae
• Family Crepicephalidae
• Family Diceratocephalidae
• Family Elviniidae
• Family Eulomidae
• Family Holocephalinidae
• Family Ignotogregatidae
• Family Inouyiidae
• Family Isocolidae
• Family Kingstoniidae
• Family Lisaniidae
• Family Llanoaspididae
• Family Lonchocephalidae
• Family Lorenzellidae
• Family Mapaniidae
• Family Marjumiidae
• Family Menomoniidae
• Family Nepeidae
• Family Norwoodiidae
• Family Papyriaspididae
• Family Phylacteridae
• Family Proasaphiscidae
• Family Ptychopariidae
• Family Shumardiidae
• Family Solenopleuridae
• Family Tricrepicephalidae
• Family Utiidae
• Family Wuaniidae

References