The fossil taxon Priapulites is the earliest-known crown-group priapulid, and is closely related to the Priapulidae.[1]

References

  1. ^ Budd, G. E.; Jensen, S. (2000). "A critical reappraisal of the fossil record of the bilaterian phyla". Biological Reviews of the Cambridge Philosophical Society. 75 (2): 253–95. doi:10.1111/j.1469-185X.1999.tb00046.x. PMID 10881389. S2CID 39772232.


Allikas: http://en.wikipedia.org/wiki/Priapulites
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