Vetulicola rectangulata Enigmatic Fossil from Chengjiang
"Member of Putative New Phylum Vetulicolia"

Description: This unusual fossil is an example of Vetulicola rectangulata, a member of the Vetulicolians, an enigmatic group which some scientists place in their own phylum (Phylum Vetulicolia). They are thought to have been swimmers 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. This specimen comes from the Chengjiang Boita, and is thus slightly older than the Burgess Shale Fauna of British Columbia. This one is quite detailed, with both the abdomen and the carapace present. This is the least often seen species of the genus; see my other offerings for another species of these enigmatic animals, such as Vetulicola cuneata.

Also see: Chengjiang Biota Fauna List Chengjiang Fossils