Time: Early Cambrian (~525 million years ago)
mm long on a 105 mm by 60 mm matrix
Site: Chengjiang Maotianshan shales, Quiongzhusi Section, Yu’anshan
Member, Heilinpu Formation, Haiyi Village, Anning, Yunnan Province, China
unusual fossil is Banffia confusa, a member of the Vetulicolians,
an enigmatic group that some scientists place in their own phylum
(Phylum Vetulicolia). The Vetulicolians are thought to have been
swimmers (notice the fine segmentation) that either were filter
feeders or detritivores. One researcher places them with the Urochordates,
giving them strong affinity with the Phylum Chordata. At present,
there is no agreement as to their systematic placement.
species is found only within the Chengjiang Biota, though the
genus also is found in the Burgess
Shale of British
Canada, as indicated by the place name (Banff in Canada) used to
name the genus by Charles Doolittle Walcott in 1911.