Information AboutYunnanozoon |
| CATEGORIES ABOUT YUNNANOZOON | |
| fossils | |
| cambrian animals | |
| maotianshan shales fossils | |
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''Yunnanozoon'' is similar to the form '' Haikouella '', which is almost certainly a Vertebrate . Still, there are anatomical differences from ''Haikouella'', including a smaller Stomach and much larger (1 mm) pharyngeal teeth. Yunannozoon is not known for sure to possess many features like Heart , Gill s, etc. that are known from well preserved specimens of '' Haikouella ''. ''Yunnanozoon'' somewhat resembles the Middle Cambrian '' Pikaia '' from the Burgess Shale of British Columbia in Canada . 13 pairs of symmetrically arranged Gonad s have been identified as are possible gill slits. However, some authors think that ''Yunnanozoon'' is closely related to the Chordate ''Haikouella'' and that ''Yunnanozoon'' is probably a chordate rather than a hemichordate. A link close relationship between ''Yunnanozoon'' and the phylum Vetulicolia has also been proposed. There is one species ''Yunnanozoon lividum'' (Chen et al., 1995). REFERENCES
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