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Trilobites

  • Trilobite | fossil arthropod | Britannica

    Because trilobites appear fully developed in the Cambrian Period, it appears likely that the ancestral trilobites originated during the Ediacaran Period (630 million to 542 million years ago) of […]

  • Trilobite - New World Encyclopedia

    Trilobites are hard-shelled, segmented members of the phylum Arthropoda and the class Trilobita that appear in the fossil record for almost 300 million years—from about 540 to 251 million years […]

  • Introduction to Trilobites

    Trilobites are remarkable, hard-shelled, segmented creatures that existed over 520 million years ago in the Earth's ancient seas. They went extinct before dinosaurs even came into existence, and are […]

  • A Guide to the Orders of Trilobites

    View galleries of trilobite images from the web, examine fact sheets, pictorial guides, and an identification key for each order, refer to a family listing, a genus listing, or consult a trilobite […]

  • Trilobite - Wikipedia

    Trilobites (/ ˈ t r aɪ l ə ˌ b aɪ t, ˈ t r ɪ-,-l oʊ-/; meaning "three lobes") are a group of extinct marine artiopodan arthropods that form the class […]

  • What is a Trilobite? - FossilEra.com

    Trilobites continued to develop and radiate during the lower Paleozoic until their decline into the Devonian. Proetida is the only trilobite order that survived into the Permian. The Permian mass […]

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