Trilobites - Photos of trilobites from around the world, as well as a searchable database of over 280 specimens. Introduction to the Trilobita - UCMP Berkeley introduction to the trilobite fossil record, ecology, systematics and morphology. Trilobites - Utah Geological Survey - Trilobites and the Cambrian Environment of Utah, an essay by Rebecca L. Hylland. Per Hansson's Trilobite Gallery - Swedish trilobites. Virtual Wonders: Trilobites - The Natural History Museum's online exhibit of several well-preserved trilobite taxa discovered in 2003 in Morocco. Rolled Trilobites - Photograpp of a collection of rolled up trilobites. Fossil Groups: Trilobites - Provides a description of these extinct arthropods, information on the major groups, and the fossil record they left during their 350 million years on Earth.