Ptychopariid
Trilobite Fossils |
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Lonchocephalus
plena
Middle
Cambrian
Suborder Ptychopariina
Family
Ptychopariidae
Weeks Formation, Utah |
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Coosella Type 1
Middle
Cambrian
Suborder Ptychopariina
Family
Crecicephalidae
Weeks
Formation, Utah
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Hamatolenus
vincenti
Cambrian
Suborder
Ptychopariina
Family Ellipsocephalidae
KJbel Wawrmast Formation, Morocco |
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Menomonia
semele
Middle
Cambrian
Suborder Ptychopariina
Family Ptychopariidae
Weeks Formation, Utah |
Triarthrus
eatoni
Late
Ordovician
Suborder
Olenina
Family Olenidae
Lorraine Shale, New York |
Gerospina
schachti
Middle
Cambrian
Suborder
Ptychopariina
Family Ptychopariidae
Weeks Formation, Utah |
Altiocculus
harrisi
Middle
Cambrian
Suborder Ptychopariina
Family Alokistocaridae
Wheeler Formation, Utah |
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| Lower Cambrian
Suborder
Ptychopariina
Family Ellipsocephalidae
Taroudant, Morocco |
Lower
Cambrian
Suborder Ptychopariina
Family Solenopleuridae
Jebel Ougnat, Morocco |
Cambrian
Suborder
Ptychopariina
Family Ellipsocephalidae
Zagora, Morocco |
Cambrian
Suborder
Ptychopariina
Family Ellipsocephalidae
KJbel Wawrmast Formation, Morocco |
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Weeksina
unispina
Middle
Cambrian
Suborder
Ptychopariina
Family Lonchocephalidae
Weeks Formation, Utah |
Ogygopsis
typicalis
Middle
Cambrian
Suborder
Ptychopariina
Family Alokistocaridae
Spence Shale, Utah |
Conocoryphe
sulzeri
Middle
Cambrian
Suborder
Ptychopariina
Family Conocoryphidae
Jince Formation, Rejkovice, Czech Republic |
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Modocia
weeksensis
Middle
Cambrian
Suborder
Ptychopariina
Family Marjumiidae
Weeks Formation, Utah |
Hatangia scita
Middle
Cambrian
Suborder Ptychopariina
Family Proasaphiscidae
Siberia, Russia |
Conocoryphe
cirina
Middle
Cambrian
Suborder Ptychopariina
Family Conocoryphidae
Jince Formation, Rejkovice, Czech Republic |
Modocia
brevispina
Middle
Cambrian
Suborder Ptychopariina
Family Marjumiidae
Marjum Formation, Utah |
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Asaphiscus
wheeleri Middle Cambrian
Suborder Ptychopariina
Family
Asaphiscidae
Marjum Formation, Utah |
Hsuaspis bilobata
Lower
Cambrian Suborder
Ptychopariina
Family Estaingiidae
Emu
Bay Shale, Kangaroo Island, South Australia |
Termierella sp
Lower
Cambrian
Suborder Ptychopariina
Family Ellipsocephalidae
Jebel Ougnat, Morocco |
Angelina sedgwicki
Ordovician
Suborder
Olenina, Superfamily Olenoidea Family Olenidae
North Wales, Europe |
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Elrathia kingii
Middle
Cambrian
Suborder Ptychopariina Superfamily Ptychoparioidea
Family Ptychopariidae
Wheeler Formation, Utah |
Ehmaniella quadrans
Upper
Cambrian
Suborder Ptychopariina Superfamily Ptychoparioidea
Family Alokistocaridae
Walsey Formation, Montana |
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Modocia
laevinucha
Middle
Cambrian
Suborder Ptychopariina
Family Marjumiidae
Marjum Formation, Utah |
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Utaspis
marjumensis
Middle
Cambrian
Suborder Ptychopariina Superfamily Ptychoparioidea
Family Alokistocaridae
Marjum Formation, Utah |
Marjumia callas
Middle
Cambrian
Suborder Ptychopariina Superfamily Ptychoparioidea
Family Marjumiidae
Marjum Formation, Utah |
Triarthrus
eatoni
Ordocivian
Suborder Olenina
Family Olenidae
Lorraine Shale, New York |
Kingaspidoides laetus
Early Cambrian
Suborder Ptychopariina
Superfamily Ellipsocephaloidea
Family Ellipsocephalidae
KJbel Wawrmast Formation, Morocco |
Trilobite
Order Ptychopariida is a large and highyly diverse group that
appeared
in the later part Lower Cambrian, and was among the causualties
of the Ordovician–Silurian
extinction event. Unlike their progenitors,
the Redlichiids, they
had facial
sutures. Like the Redlichiids, however, the thorax
was typically large and had eight or more
thoracic segments, and the
thorax was
nomally
much
longer
than the pygidium (micropygous).
Read more about Ptychopariid
Trilobites.
