User:Giant Blue Anteater/Yunnanozoon
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Note: this is a draft of Giant Blue Anteater's planned edit to the Yunnanozoon article incorporating a new understanding of the species based on new research, which was created as a subpage here so he can make incremental edits until the draft is complete and is ready to replace the content of that article.
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Yunnanozoon | |
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Artist's restoration of Yunnanozoon as a chordate. | |
Scientific classification | |
Kingdom: | |
(unranked): | |
Phylum: | |
Family: | Yunnanozoonidae Dzik, 1995 |
Genus: | Yunnanozoon |
Binomial name | |
Yunnanozoon lividum Hou, Ramsköld & Bergström, 1991 | |
Synonyms | |
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Yunnanozoon (Yunnan + Greek ζῷον zôion "animal") is an extinct genus of enigmatic animal from the Lower Cambrian, Chengjiang biota of Yunnan province, China. Since the description of the only known species, Yunnanozoon lividum (from Latin lividum "livid"; together with the generic name meaning "livid animal of Yunnan," with respect to the color of the fossils), in 1991, it was generally understood to be a type of deuterostome, with authors interpreting it as a chordate, a hemichordate,[1] a vertebrate, or a relative of the clade Vetulicolia (which are now known to be chordates themselves through the discovery of Nesonektris). However, a recent analysis of its morphology by Cong et al. has ruled out its classification as a chordate, and whether it is a even a deuterostome is currently unclear; however, it is unmistakably a bilaterian, and thus the authors suggest that any attempt to classify Yunnanozoon should take into consideration a broader bilaterian context.[2]