Vetulicolida is one of the two classes of the enigmatic extinct phylum

Vetulicolia VetulicoliaThe taxon name, Vetulocolia, is derived from the type genus, ''Vetulicola'', which is a compound Latin word composed of ''vetuli'' "old" and ''cola'' "inhabitant". is a taxon (either phylum or subphylum in rank) encompassing several ex ...

. It contains one order, Vetulicolata, which is divided into two families,

Vetulicolidae Vetulicolidae is an extinct family of Early Cambrian deuterostomes comprising two genera: ''Vetulicola'' and ''Ooedigera ''Ooedigera peeli'' is an extinct vetulicolian from the Early Cambrian of North Greenland. The front body was flattened h ...

and

Didazoonidae Didazoonidae is a family of Vetulicolian chordates containing the species ''Didazoon haoae'' and ''Pomatrum ventralis''. Their fossils are from the Maotianshan shales Cambrian Lagerstätte A Lagerstätte (, from ''Lager'' 'storage, lair' '' ...

References

{{Paleo-deuterostome-stub Vetulicolia