opacity:
Field Museum - trilobite - Cybele pander - found in St. Petersburg, Russia.jpg
opacity:
Field Museum - Ordovician trilobite - Hoplolichas furcifer - St. Petersburg, Russia.jpg
opacity:
Field Museum - Silurian trilobite in a tucked defensive position - Gravicalymene celebra - Chicago area, Illinois.jpg
opacity:
Field Museum - Devonian trilobite - Phacops megalomanicus (now Drotops megalomanicus ?) - Morocco.jpg
opacity:
Paraceraurus exsull (trilobite)
opacity:
Field Museum - Devonian trilobite - Eldredgeops rana - Sylvania, Ohio.jpg
opacity:
Koneprusia brutoni (trilobite)
opacity:
Field Museum - trilobite - Peronopsis interstrictus - Millard County, Utah.jpg
opacity:
Field Museum - trilobite - Phacops rana milleri - Sylvania, Ohio.jpg
opacity:
Field Museum - Ordovician trilobite - Paraceraurus exsull - St. Petersburg, Russia.jpg
opacity:
Field Museum - Devonian trilobite - Koneprusia brutoni - Morocco.jpg
opacity:
Cybele panderi (trilobite), top-down
opacity:
Ceratargus spinosus (trilobite)
opacity:
Dicranerus hamatus elegantus (trilobite)
opacity:
Cybele panderi (trilobite)
opacity:
Kolihapeltis rabatensis (trilobite)
opacity:
trilobites galore
opacity:
antenna-y Ordivician trilobite
opacity:
trilobites - Selenopelitis buchii, Ordovician, Morocco
opacity:
andalusiana trilobite
opacity:
another Ordivician trilobite
opacity:
Psychopage elegans (trilobite)