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trilobite: Media
fossil arthropod
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trilobite
Trilobite (Acadoparadoxides briareus), Middle Cambrian, from Morocco.
Photograph by Sandy Grimm. Houston Museum of Natural Science, HMNS 1284
trilobite fossil
Fossilized trilobites found in rocks dating to the Cambrian Period in Russia.
age fotostock/SuperStock
trilobite
Trilobite (Ceratarges), Middle Devonian, from southern Morocco.
Photograph by Sandy Grimm. Houston Museum of Natural Science, HMNS 1313
trilobite fossil
Trilobites had compound eyes with lenses made of the mineral calcite.
Encyclopædia Britannica, Inc.
trilobite
Fossilized cluster of trilobites from the genus Agnostus dated to the Cambrian...
Courtesy of the trustees of the British Museum (Natural History); photograph, Imitor
marine family diversity
The diversity of marine animal families since late Precambrian time. The data for...
Encyclopædia Britannica, Inc.
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