Trilobite Order Ptychopariida Image Gallery


Palaeolenus lantenoisi Family Palaeolenidae Lower Cambrian Maotianshan Shale Chengjiang County, China	Bergeroniellus asiaticus Family Ellipsocephalidae Lower Cambrian Lena River, Russia	Elrathina (= Ptychoparella) cordillerae Mass Mortality Family Alokistocaridae Middle Cambrian Walcott Quarry Shale Member, Burgess Shale, British Columbia	Xingrenaspis xingrenersis Family Ptychopariidae Early Middle Cambrian Kaili Formation Guizhou Province, China

Modocia weeksensis Family Marumiidae Middle Cambrian Weeks Formation Millard County, Utah	Exceedingly Rare Gerospina schachti Middle Cambrian Weeks Formation Millard County, Utah	Nephalicephalus beebei Family Menomoniidae Middle Cambrian Weeks Formation Millard County, Utah	Ptychopariida and Agnostida Trilobites Assemblage Middle Cambrian Marjum Formation Millard County, Utah

Undescribed new species Upper Cambrian Cranbrook, British Columbia, Canada	Cedaria minor Middle Cambrian Weeks Formation Millard County, Utah	Unknown Trilobite Upper Cambrian Family Unknown Upper Cambrian Radium, British Columbia	Coosella Type I Superfamily Ptychoparioidea Family Crecicephalidae Middle Cambrian Weeks Formation Millard County, Utah

Angelina sedgwickii Lower Ordovician Family Olenidae North Wales, United Kingdom	Dresbachia amata Family Menomoniidae Middle Cambrian Weeks Formation Millard County, Utah	Elrathia marjumi Family: Marjumiidae Middle Cambrian Marjum Formation Millard County, Utah

Trilobite Order Ptychopariida Families:
Suborder Ptychopariina
Superfamily Ellipsocephaloidea
- Bigotinidae
- Yunnanocephalidae
- Palaeolenidae
- Estaingiidae
- Ellipsocephalidae
- Protolenidae [changed to - Ellipsocephalidae]
- Aldonaiidae
- Agraulidae
Superfamily Ptychoparioidea
- Eulomidae
- Antagmidae
- Alokistocaridae
- Ptychopariidae
- Marjumiidae
- Solenopleuridae
- Atopidae
- Holocephalinidae
- Conocoryphidae
- Dokimokephalidae
- Onchonotopsidae [into - Catillicephalidae, order uncertain]
- Nepeiidae [Nepeidae]
- Crepicephalidae
- Tricrepicephalidae
- Lonchcephalidae
- Kingstoniidae
- Shumardiidae
- Asaphiscidae
- Cooselidae [into Crepicephalidae]
- Elviniidae (includes - Komaspididae)
- Cedariidae
- Norwoodiidae
- Menomoniidae
- Bolaspididae
- Papyriaspididae
- Emmrichellidae [into - Asaphiscidae]
- Changshaniidae
- Diceratocephalidae
- Phylacteridae
- Conokephalinidae
- Utiidae
- Tengfengiidae [into Proasaphiscidae]
- Lisaniidae
- Inouyiidae
- Wuaniidae
- Lorenzellidae
- Proasaphiscidae
- Isocolidae
- Ignotogregatidae
- Holanshaniidae [into - Proasaphiscidae]
- Mapaniidae
- Acrocephalitidae
- Lianoaspididae
Suborder Olenina
Superfamily Olenoidea
- Olenidae
Suborder Uncertain
- Ithyophoridae
Polyphyletic Groups
- Catillicephalidae
- Raymondinidae
- Avoninidae
- Plethopeltidae (near Cedariidae - Norwoodiidae above?)