編號 99037003

編號 99037003

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Period: Early Cambrian 518MA
Origin: China, Yunnan, Chengjiang biota
Size: 2.5 cm
Palaeolenus is an extinct genus of ptychopariid trilobites of the family Palaeolenidae. Species lived during the later part of the Botomian stage of the Cambrian Period, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period.