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| Yunnanozoon Temporal range: Terreneuvian,
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| Fossil of Yunnanozoon lividum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Family: | †Yunnanozoonidae Dzik, 1995 |
| Genus: | †Yunnanozoon Hou, Ramskold & Bergstrom, 1991 |
| Species: | †Y. lividum
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| Binomial name | |
| †Yunnanozoon lividum Hou, Ramskold & Bergstrom, 1991
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| Synonyms | |
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Yunnanozoon lividum (Yunnan + Greek ζῷον zôion (animal), with species name Latin lividum; (lead-coloured), referring to preserved colour of specimens[1]) is an extinct species of bilaterian animal from the Lower Cambrian Chengjiang biota of Yunnan province, China. Its affinities have been long the subject of controversy.