Bengtson, S., Cunningham, John A.; Yin, Chongyu and Donoghue, Philip C.J.: A merciful death for the „earliest bilaterian“, Vernanimalcula. In: Evolution and Development. Band14, Nr.5, 2012, S.421–427, doi:10.1111/j.1525-142X.2012.00562.x.
Bengtson, S., Budd, G.: Comment on „small bilaterian fossils from 40 to 55 million years before the Cambrian.“ In: Science. Band306, 2004, S.1291a, doi:10.1126/science.1101338 (Online).
sciencemag.org
Chen, J. Y., D. J. Bottjer, P. Oliveri, S. Q. Dornbos, F. Gao, S. Ruffins, H. Chi, C. W. Li, E. H. Davidson: Small bilaterian fossils from 40 to 55 million years before the cambrian. Science 305, 2004: 218–222. (Abstract, abgerufen am 20. Juni 2007)
Bengtson, S., Budd, G.: Comment on „small bilaterian fossils from 40 to 55 million years before the Cambrian.“ In: Science. Band306, 2004, S.1291a, doi:10.1126/science.1101338 (Online).