title: Palaeontology: Hallucigenia's head.
authors.affiliation: Yunnan University, Kunming 650091, China, and at the Natural History Museum, London, UK.
authors.forename: Xiaoya
authors.initials: X
authors.lastname: Ma
mesh_terms: D000818:Animals; D005580:Fossils / Q000648:ultrastructure*; D007448:Invertebrates / Q000145:classification* / Q000648:ultrastructure*; D010802:Phylogeny