Yunnanozoon

Yunnanozoon
Temporal range: Terreneuvian,
Fossil of Yunnanozoon lividum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Family: Yunnanozoonidae
Dzik, 1995
Genus: Yunnanozoon
Hou, Ramskold & Bergstrom, 1991
Species:
Y. lividum
Binomial name
Yunnanozoon lividum
Hou, Ramskold & Bergstrom, 1991
Synonyms
  • Haikouella Chen, Huang & Li, 1999

Yunnanozoon lividum (from Yunnan, and Ancient Greek ζῷον (zôion), meaning "animal", with specific name coming from Latin lividum; (lead-coloured), referring to preserved colour of specimens) is an extinct species of bilaterian animal from the Lower Cambrian Chengjiang biota of Yunnan province, China. Its affinities have long been the subject of controversy.