Abele L. G., T. Gilmour & S. Gilchrist, 1983. Size and shape in the phylum Phoronida. J. Zool., London, 200, 317-323.

Bailey-Brock J. H. & C. C. Emig, 2000. Hawaiian Phoronida (Lophophorata) and their distribution in the Pacific region. Pacific Science, 54 (2), 119-126.

Dalis M., Yang H., Fuller T., Sanborn A., Resh C., Blakeslee A.M. & Santagata S., 2015. Preliminary phylogeographic patterns and species delimitation of phoronid worms. Integrative and Comparative Biology, 55 (suppl. 1), e243.

Del Carmen Brito M., C. C. Emig, J. Núñez, R. Riera, C. Roldán & J. M. Viéitez, 2002. Nuevos registros de foronídeos en Lanzarote, islas Canarias (Lophophorata: Phoronida). Vieraea, 30, 153-159.

Emig C. C., 1969. Considérations sur la systématique des Phoronidiens. VIII. Phoronis pallida (Schneider) Silén, 1952. IX. Phoronis ovalis Wrigth, 1856. Bull. Mus. Nat. Hist. nat. Paris, 41, 1531-1542.

Emig C. C., 1971. Taxonomie et systématique des Phoronidiens. Bull. Mus. Nat. Hist. nat. Paris, (Zool.) 8, 469-568.

Emig C. C., 1972. Etude des Phoronidiens (Systématique; Régénération). Thèse Dr. Sci., Univ. Aix-Marseille 2, 150 pp.

Emig C. C., 1973. Ecologie des Phoronidiens. Bull. Ecol., 4 (4), 339-364.

Emig C. C., 1974. The systematics and evolution of the phylum Phoronida. Z. zool. System. Evolut.-forsch., 12 (2), 128-151.

Emig C. C., 1977. Notes sur la localisation, l'écologie et la taxonomie des Phoronidiens. Téthys, 7 (4), 357-364.

Emig C. C., 1977. Embryology of Phoronida. Amer. Zool., 17 (1), 21-38.

Emig C. C., 1979. British and other Phoronids. In: Synopses of the British fauna, Eds Kermack D. M. & R. S. K. Barnes, Acad. Press, London, 13, 57 pp.

Emig C. C., 1982. The biology of Phoronida. Adv. mar. Biol. 19, 1-89.

Emig C. C., 1982. Nouvelles localisations de Phoronidiens. Téthys, 10 (3), 287-290.

Emig C. C., 1983. Phoronida. In : Reproductive Biology of Invertebrates, Eds Adiyodi R. K. & R. G. Adiyodi, Wiley Intersci., New-York, Vol. 1, Oogenesis, oviposition, and oosorption, pp. 535-542.

Emig C. C., 2003. Phoronida (Phoronids). In : Protostomes. Grzimek's Animal Life Encyclopedia, (ed. 2) vol. 2, 491-495.

Emig C. C., 2017. Phoronida database. Accessed at http://paleopolis.es/Phoronida_database on 20yy-mm-dd.

Emig C. C., D. F. Boesch & S. Rainer, 1977. Phoronida from Australia. Rec. Austr. Mus., 30 (16), 455-474.

Emig C. C., Roldán C. & J. M. Viéitez, 1998. Foronídeos del litoral luso-español. X Simpósio ibérico de estudos de bentos marinho, Algrave, Portugal, 1998, Resumos, p. 111. Resumos, p. 111.

Emig C. C., Roldán C. & J. M. Viéitez, 2000. Foronídeos del litoral luso-español. Phoronida from the Luso-Iberian zone. Boletín de la Real Sociedad Española de Historia Natural, 96 (1-2), 77-83.

Emig C. C., Roldán C. & J. M. Viéitez, 2001. Phoronida. In: European Register of Marine Species, a check list of the marine species in Europe and a bibliography of guides to their identification, Costello M. J., Emblow C. & R. White (Eds). Patrimoines Naturels, 50, 324-325.

Emig C. C., Roldán C. & J. M. Viéitez, 2002. European Register of Marine Species: Phoronida http://erms.biol.soton.ac.uk/lists/full/Phoronida.shtml

Emig C. C., Roldán C. & J. M. Viéitez, 2005. Filo Phoronida. In: Fauna Ibérica, vol. 27. Museo de Ciencias Naturales, CSIC Madrid, p. 19-56 & 180-186 & 223-224.

Ferraro S. P. & F. A. Cole, 1997. Effects of DDT sediment-contamination on macrofaunal community structure and composition in San Francisco Bay. Marine Biology, 130 (2), 323-334.

Franzén A., 1956. On spermiogenesis, morphology of the spermatozoon and biology of fertilization among invertebrates. Zool. Bid. Uppsala, 31, 439-441.

Franzén A. & K. Ahlfors, 1980. Ultrastructure of spermatids and spermatozoa in Phoronis, phylum Phoronida. J. submicrosc. Cytol., 12 (4), 585-597.

Frey R. W. & J. D. Howard, 1975. Endobenthic adaptations of juvenile thalassinidean shrimp. Bull. geol. Soc. Denmark, 24, 283-297.

Hayward P. J. & J. S. Ryland, 1990. The marine fauna of the British Isles and North-West Europe. Oxford (Clarendon Press) 996 pp.

Herrmann K., 1997. Phoronida. Microscopic Anatomy of Invertebrates, Wiley-Liss, New-York, 13, 207-235.

Hirose M., Fukiage R., Katoh T. & Kajihara H., 2014. Description and molecular phylogeny of a new species of Phoronis (Phoronida) from Japan, with a redescription of topotypes of P. ijimai Oka, 1897. ZooKeys, 398, 1–31.

Howson C. M., 1987. Phoronida. In: Directory of the British fauna and flora, Ed. C. M. Howson, Marine Conservation Society, Herefordshire UK, pp. 293-296.

Hyman L. H., 1958. The occurence of chitin in the Lophophorate-phyla. Biol. Bull. mar. biol. Lab. Woods Hole, 114, 106-112.

Jeuniaux C., 1982. Composition chimique comparée des formations squelettiques chez les Lophophoriens et les Endoproctes. Bull. Soc. zool. Fr., 107 (2), 233-249.

Johnson K.B., 2001. Phoronida. In: An identification guide to the larval marine invertebrates of the Pacific Northwest, A.L. Shanks (editor). Oregon State Univ. Press, Corvallis, p. 251-257.

Marsden J. R., 1959. Phoronidea from the Pacific coast of North America. Can. J. Zool., 37 (2), 87-111.

Pennerstorfer M. & Scholtz G., 2011. Early cleavage in Phoronida shows spiral features. In: Abstracts, Deep Metazoan Phylogeny, Munich 2011. and 2nd International Congress on Invertebrate Morphology. Harvard University, Cambridge, p. 119 Zitteliana, Series B, 30, p. 38.

Poche F., 1908. SynonymischeUebersicht der bisher bekannten Actinotrochidae. Arch. Naturges., 74, 373-388.

Rachor E. & S. A. Gerlach, 1978. Changes of macrobenthos in a sublittoral sand area of the german Bight, 1967 to 1975. Rap. P.-V. Conseil intern. Explor. Mer, 172, 418-431.

Saiz Salinas J. I., 1987. Especies de priapulidos, foronídeos y pogonóforos de la Península Ibérica y mares adyancentes. Misc. Zool., 11, 55-60.

Santagata S., 2002. Structure and metamorphic remodeling of the larval nervous system and musculature of Phoronis pallida (Phoronida). Evolution and Development, 4 (1), 28-42.

Santagata S., 2004. A waterborne behavioral cue for the actinotroch larva of Phoronis pallida (Phoronida) produced by Upogebia pugettensis (Decapoda: Thalassinidea). Biol. Bull., 207, 103–115.

Santagata S., 2015. Phoronida. In: Wanniger A. (ed.), Evolutionary developmental biology of invertebrates 2, Lophotrochozoa (Spiralia). Springer, p. 231-246.

Santagata S. & B. L. Cohen, 2009. Phoronid phylogenetics (Brachiopoda; Phoronata): evidence from morphological cladistics, small and large subunit rDNA sequences, and mitochondrial cox1. Zoological Journal of the Linnean Society, 157, 34-50.

Santagata S. & R. L. Zimmer, 2002. Comparison of the neuromuscular systems among actinotroch larvae: systematic and evolutionary implications. Evolution and Development, 4 (1), 43-54.

Silén L., 1952. Researches on Phoronida of the Gullmar Fiord area (West coast of Sweden). Ark. Zool., 4 (4), 95-140.

Silén L., 1954. Developmental biology of Phoronidea of the Gullmar Fiord area (West coast of Sweden). Act. Zool., 35, 215-257.

Silén L., 1954. On the nervous system of Phoronis. Ark. Zool., 6 (1), 1-40.

Sonnleitner B., Schwaha T. & Wanninger A., 2014. Inter- and intraspecific plasticity in distribution patterns of immunoreactive compounds in actinotroch larvae of Phoronida (Lophotrochozoa). Journal of zoological Systematics and evolutionary Research, 52 (1), 1-14.

Staver J. M. & R. R. Strathmann, 2002. Evolution of fast development of planktonic embryos to early swimming. Biol. Bull., 203, 58-69.

Strathmann R. R., Staver J. M. & J. R. Hoffman, 2002. Risk and the evolution of cell-cycle durations of embryos. Evolution, 56 (4), 708-720.

Temereva E. N. & E. B. Tsitrin, 2014. Organization and metamorphic remodeling of the nervous system in juveniles of Phoronopsis harmeri (Phoronida): insights into evolution of the bilaterian nervous system. Frontiers in Zoology, 11 (35).

Temereva E.N. & A. Chichvarkhin, 2017. A new phoronid species, Phoronis embryolabi, with a novel type of development, and consideration of phoronid taxonomy and DNA barcoding. Invertebrate Systematics, 31 (1), 65-84.

Temereva E.N. & V.V. Malakhov, 2016. Viviparity of larvae, a new type of development in phoronids (Lophophorata: Phoronida). Doklady Akademii Nauk, 467 (3), 362-364.

Temereva E. N. & Y. Y. Sokolova, 2017. A microsporidian infection in phoronids (Phylum Phoronida): Microsporidium phoronidi n. sp. from a Phoronis embryolabi. Journal of eukaryotic Microbiology, 0, 1–5.

Thomassin B. A. & C. C. Emig, 1983. Distribution des Phoronidiens dans les biotopes littoraux, coralliens et terrigènes, du Canal de Mozambique (S. W. Océan Indien). Téthys, 11 (1), 33-48.

Viéitez J. M., 1989. Estudia de las communidades bentonicas de dos playas de las rias de Pontevedra y Vigo (Galicia, España). Bol. Inst. Esp. oceanogr., 6, 241-258.

Viéitez J. M. & C. C. Emig, 1979. Presencia de Phoronis pallida (Schneider, 1862) (Phoronida, Lophophorata) en la costa atlantico española. Téthys, 9 (1), 91-92.

Viéitez J. M., C. C. Emig, C. Rodriguez-Babio & A. M. Garcia-Carrascosa, 1987. Foronideos de las costas de la Peninsula Ibérica e Islas Baleares: sistematica, ecologia, distribucion y estados larvarios. Bol. Inst. esp. Oceanogr., 4 (2), 63-78.

Zimmer L., 1991. Phoronida. In: Reproduction of marine invertebrates, Giese A. C., Pearce U. B. & U. B. Pearse (eds). Boxwood Press, Pacific Grove CA, vol. 6, pp. 1-45.

Zimmer R. L., 1978. The comparative structure of the preoral hood coelom in Phoronida and the fate of this cavity during and after metamorphosis. In: Settlement and metamorphosis of marine invertebrates larvae, Eds Chia & Rice, pp. 23-40.

Zimmer R. L., 2007. Phoronida. In: Intertidal Invertebrates from Central California to Oregon. In: The Light and Smith Manual, 4th ed., completely revised and expanded, Univ. California Press, Los Angeles, p. 860-863.

Cori C. J., 1930. Phoronidea. In: Die Tierwelt Deutschlands, Fischer, Jena 17, 14-24.

Cori C. J., 1932. Phoronidea. In: Die Tierwelt der Nord- und Ostsee, Grimpe & Wragler, 7 (2), 101-132.

Cori C. J., 1939. Phoronidea. Bronn's Klassen und Ordnungen des Tierreiches, 4 (4), 1-183.

Emig C. C., 1979. British and other Phoronids. In: Synopses of the British fauna, Eds Kermack D. M. & R. S. K. Barnes, Acad. Press, London, 13, 57 pp.

Emig C. C., 1982. The biology of Phoronida. Adv. mar. Biol. 19, 1-89.

Emig C. C., 1990. Phoronida. In : Reproductive Biology of Invertebrates, Eds Adiyodi R. K. & R. G. Adiyodi, Oxford & IBH, New Dehli, Vol. 4 (4): Fertilization, development, and parental care, pp. 165-184.

Emig C. C., 2003. Phoronida (Phoronids). In : Protostomes. Grzimek's Animal Life Encyclopedia, (ed. 2) vol. 2, 491-495.

Emig C. C., 2016. Phoronida database. Accessed at http://paleopolis.es/Phoronida_database on 20yy-mm-dd.

Emig C. C., Roldán C. & J. M. Viéitez, 2005. Filo Phoronida. In: Fauna Ibérica, vol. 27. Museo de Ciencias Naturales, CSIC Madrid, p. 19-56 & 180-186 & 223-224.

Forneris L., 1957. Phoronidea: Actinotrocha larvae. Cons. int. Expl. Mer, Zooplancton, 69, 1-4.

Harmer S. F., 1917. On Phoronis ovalis. Q. J. microsc. Sci., 62, 115-148.

Howson C. M., 1987. Phoronida. In: Directory of the British fauna and flora, Ed. C. M. Howson, Marine Conservation Society, Herefordshire UK, pp. 293-296.

Johnson K.B., 2001. Phoronida. In: An identification guide to the larval marine invertebrates of the Pacific Northwest, A.L. Shanks (editor). Oregon State Univ. Press, Corvallis, p. 251-257.

Meek A., 1917. On the Phoronidea. Rep. Dove mar. Lab. Cullercoast, 6, 33-48.

Poche F., 1908. SynonymischeUebersicht der bisher bekannten Actinotrochidae. Arch. Naturges., 74, 373-388.

Santagata S., 2002. Structure and metamorphic remodeling of the larval nervous system and musculature of Phoronis pallida (Phoronida). Evolution and Development, 4 (1), 28-42.

Santagata S., 2004. Larval development of Phoronis pallida (Phoronida): Implications for morphological convergence and divergence among larval body plans. J. Morphol., 259, 347–358.

Santagata S., 2004. A waterborne behavioral cue for the actinotroch larva of Phoronis pallida (Phoronida) produced by Upogebia pugettensis (Decapoda: Thalassinidea). Biol. Bull., 207, 103–115.

Santagata S., 2015. Phoronida. In: Wanniger A. (ed.), Evolutionary developmental biology of invertebrates 2, Lophotrochozoa (Spiralia). Springer, p. 231-246.

Santagata S. & R. L. Zimmer, 2002. Comparison of the neuromuscular systems among actinotroch larvae: systematic and evolutionary implications. Evolution and Development, 4 (1), 43-54.

Schneider A., 1862. Über die Metamorphose der Actinotrocha branchiata. Arch. Anat. Physiol., 1862, 47-65.

Selys-Longchamps M. de, 1903. Über Phoronis und Actinotrocha bei Helgoland. Wiss. Meeresunters., Helgoland, 6, 1-55.

Selys-Longchamps M. de, 1907. Phoronis. Fauna Flora Neapel, 30, 1-280.

Silén L., 1952. Researches on Phoronida of the Gullmar Fiord area (West coast of Sweden). Ark. Zool., 4 (4), 95-140.

Silén L., 1954. Developmental biology of Phoronidea of the Gullmar Fiord area (West coast of Sweden). Act. Zool., 35, 215-257.

Sonnleitner B., Schwaha T. & Wanninger A., 2014. Inter- and intraspecific plasticity in distribution patterns of immunoreactive compounds in actinotroch larvae of Phoronida (Lophotrochozoa). Journal of zoological Systematics and evolutionary Research, 52 (1), 1-14.

Temereva E. N. & E. B. Tsitrin, 2014. Organization and metamorphic remodeling of the nervous system in juveniles of Phoronopsis harmeri (Phoronida): insights into evolution of the bilaterian nervous system. Frontiers in Zoology, 11 (35).

Temereva E.N. & A. Chichvarkhin, 2017. A new phoronid species, Phoronis embryolabi, with a novel type of development, and consideration of phoronid taxonomy and DNA barcoding. Invertebrate Systematics, 31 (1), 65-84

Temereva E.N. & V.V. Malakhov, 2016. Viviparity of larvae, a new type of development in phoronids (Lophophorata: Phoronida). Doklady Akademii Nauk, 467 (3), 362–364.

Temereva E.N. & Neretina T.V., 2013. A distinct phoronid larva: morphological and molecular evidence. Invertebrate Systematics, 27 (6), 622-633.

Viéitez J. M., C. C. Emig, C. Rodriguez-Babio & A. M. Garcia-Carrascosa, 1987. Foronideos de las costas de la Peninsula Ibérica e Islas Baleares: sistematica, ecologia, distribucion y estados larvarios. Bol. Inst. esp. Oceanogr., 4 (2), 63-78.

Zimmer L., 1991. Phoronida. In: Reproduction of marine invertebrates, Giese A. C., Pearce U. B. & U. B. Pearse (eds). Boxwood Press, Pacific Grove CA, vol. 6, pp. 1-45.

Zimmer R. L., 1978. The comparative structure of the preoral hood coelom in Phoronida and the fate of this cavity during and after metamorphosis. In: Settlement and metamorphosis of marine invertebrates larvae, Eds Chia & Rice, pp. 23-40.

Zimmer R. L., 1980. Mesoderm proliferation and formation of the protocoel and metacoel in early embryos of Phoronis vancouverensis (Phoronida). Zool. Jahrb., Abt. Anat. Ontog. Tiere., 103 (2-3), 219-233.