Tag Archives: trilobites

Phacopid Trilobites

Trilobites are extinct arthropods that dominated the faunas of the Paleozoic Era. Since their appearance 523 million years ago, they were equipped with elaborate compound eyes. While most of them possessed apposition compound eyes, comparable to the compound eyes of many crustaceans and insects living today, trilobites of the suborder …

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New Research Shows

Trilobites had well-developed gill-like structures in their upper leg branches, according to a new imaging study led by the University of California, Riverside. Trilobite fossil preserved in pyrite. Image credit: Jin-Bo Hou / University of California, Riverside. Trilobites are extinct marine arthropods that dominated the ecosystems of the Paleozoic era. …

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