3D model of a Trilobite.
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Trilobites form one of the earliest known groups of arthropods.
Collage of six trilobite genera.
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Diagram showing the three major sections of a trilobite.
Cast of Isotelus rex, the largest-known trilobite, from the middle to upper Ordovician of North America
Diagram showing the larger details of the cephalon of a trilobite.
Koneprusia brutoni, an example of a species with elaborate spines.
Trilobite at the sea bottom
Trilobites scavenging on the sea bottom.
Unknown Phacops sp. eye.
A group of Trilobites scouring for food.
A pair of Trilobites such as this may have mated for reproduction.
A Triarthrus eatoni trilobite, 11 mm long, found in the Frankfort Shale, New York, US.
Trilobite lineage.
Comparison of the redlichiid trilobites, Redlichia rex (larger), and R. takooensis, from the Lower Cambrian Kangaroo Island, Australia
An exceptionally well preserved Olenoides serratus from the Burgess Shale.
Redlichiida, such as this Paradoxides, may represent the ancestral trilobites.
Placoparia tournemini, 28mm.
Trilobite fossil at the Henan Geological Museum, Zhengzhou, China.
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