Trilobites
Links
Trilobites
Photos of trilobites from around the world, as well as a searchable database of over 280 specimens.
Introduction to the Trilobita
http://www.ucmp.berkeley.edu/arthropoda/trilobita/trilobita.html
UCMP Berkeley introduction to the trilobite fossil record, ecology, systematics and morphology.
Trilobites - Utah Geological Survey
http://geology.utah.gov/surveynotes/gladasked/trilobites.htm
Trilobites and the Cambrian Environment of Utah, an essay by Rebecca L. Hylland.
Weeks formation and Indiana Trilobites
http://www.weekstrilobites.com/
Images of and information about a personal collection of well-preserved trilobites found in Indiana and the Weeks Formation of Millard County, Utah and Indiana.