K. J.  Osborn, Kuhnz, L. A., Priede, I. G., Urata, M., Gebruk, A. V., and Holland, N. D., ?Diversification of acorn worms (Hemichordata, Enteropneusta) revealed in the deep sea.?, Proceedings. Biological sciences / The Royal Society, vol. 279, pp. 1646-54, 2012.

N. D.  Holland, Osborn, K. J., and Kuhnz, L. A., ?A new deep-sea species of harrimaniid enteropneust (Hemichordata)?, Proceedings of the Biological Society of Washington, vol. 125, pp. 228 - 240, 2012.

J. T.  Cannon, Rychel, A. L., Eccleston, H., Halanych, K. M., and Swalla, B. J., ?Molecular phylogeny of hemichordata, with updated status of deep-sea enteropneusts?, Molecular Phylogenetics and Evolution, vol. 52, pp. 17 - 24, 2009.

K. H.  Woodwick and Sensenbaugh, T., ?Saxipendium coronatum, New Genus, New Species (Hemichordata, Enteropneusta) - The Unusual Spaghetti Worms Of The Galapagos Rift Hydrothermal Vents?, Proceedings of The Biological Society of Washington, vol. 98, pp. 351?365, 1985.

Å.  Franzén, Woodwick, K. H., and Sensenbaugh, T., ?Spermiogenesis and ultrastructure of spermatozoa in Saxipendium coronatum (Hemichordata, Enteropneusta), with consideration of their relation to reproduction and dispersal?, Zoomorphology, vol. 105, pp. 302-307, 1985.