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Redlichiida

A Dictionary of Earth Sciences | 1999 | 336 words | Copyright

Redlichiida An order of Trilobita that lived in the Lower to Middle Cambrian. They had large eyes, a large, semicircular cephalon with strong genal spines, many small, often spiny, thoracic segments, and a tiny pygidium. There were 4 suborders. Some, especially members of the suborder Olenelloidea, are important stratigraphic markers.

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AILSA ALLABY and MICHAEL ALLABY. "Redlichiida." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>.

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