Trilobites from North America

See images from the:

		Quaternary
		Tertiary
		Cretaceous
		Jurassic
		Triassic
		Permian
		Carboniferous
		Devonian
		Silurian
		Ordovician
		Cambrian
		Precambrian

Asaphiscus wheeleri
From the Cambrian in Utah
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Bathyriscus fimbriatus
From the Cambrian in Utah
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Modocia typicalis
From the Cambrian in Utah
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Flexicalymene meeki
From the Ordovician in Ohio
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Diacalymene clavicula
From the Silurian in Oklahoma
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Phacops rana milleri
From the Devonian in Ohio
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Olenellus fremonti
From the Cambrian in California
© 2004 UCMP

Olenellus (Paedeumias) clarki
From the Cambrian in California
© 2004 UCMP

Wanneria
From the Cambrian in Nevada
© 2003 Melissa Hicks, University of Nevada, Las Vegas