Weeks formation and Indiana Trilobites
- 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.
- http://www.weekstrilobites.com/

Cincinnatian Trilobites
- Information about trilobites from the Upper Ordovician Period Cincinnatian Seiries of Eastern North America. Includes images and links.
- http://www.isotelus.com/

Palaeontology - Research - What are Trilobites?
- A short intro to trilobites, courtesy of the Australian Museum Online.
- http://www.austmus.gov.au/palaeontology/research/trilobites02.htm

Trilobites - Utah Geological Survey
- Trilobites and the Cambrian Environment of Utah, an essay by Rebecca L. Hylland.
- http://geology.utah.gov/surveynotes/gladasked/trilobites.htm

Introduction to the Trilobita
- UCMP Berkeley introduction to the trilobite fossil record, ecology, systematics and morphology.
- http://www.ucmp.berkeley.edu/arthropoda/trilobita/trilobita.html

The Semi-Compleat Trilobite
- A page of trilobites with images broken down by time period.
- http://www.geo.ucalgary.ca/~macrae/trilobite/trilobite.html

Per Hansson's trilobite gallery
- Swedish trilobites.
- http://hem.passagen.se/phmail/trilobiteng.html

Trilobites
- Photos of trilobites from around the world, as well as a searchable database of over 280 specimens.
- http://www.trilobites.com/