World Register of Marine Species (WoRMS)
WoRMS (2026). Phoronis hippocrepia Wright, 1856. Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=128548 on 2026-08-29
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Cori, C. J. (1889). Beitrag zur Anatomie der Phoronis. Inaug.-Diss. Prague (Univ. Leipzig). 48 pp.
Gilchrist, J. D. F. (1907). New forms of the Hemichordata from South Africa. Transactions of the South African Philosophical Society. 17(1): 151-176.
Silén, L. (1952). Research on Phoronida of the Gullmar Fiord area (West coast of Sweden). Ark. Zool. 4(4): 95-140.
Van Beneden, P.-J. (1858). Notice sur un Annélide céphalobranche sans soies, désigné sous le nom de Crepina. Annales des sciences naturelles. Zoologie (1834) Quatrième série(X): 11-23, plate V.