Cycliophora

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Kingdom: Animalia
Subregnum: Eumetazoa
Cladus: ParaHoxozoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Platyzoa
Phylum:
Classes: Eucycliophora

Symbiidae

Cycliophora Funch & Kristensen, 1995

• Baker, J.M. & Giribet, G. 2007. A molecular phylogenetic approach to the phylum Cycliophora provides further evidence for cryptic speciation in Symbion americanus. Zoologica scripta 36: 353–359. DOI: 10.1111/j.1463-6409.2006.00288.x
• Funch, P. 1996. The chordoid larva of Symbion pandora (Cycliophora) is a modified trochophore. Journal of morphology 230: 231–263. DOI: 10.1002/(SICI)1097-4687(199612)230:3<231::AID-JMOR1>3.0.CO;2-H
• Funch, P. & Kristensen, R.M. 1995. Cycliophora is a new phylum with affinities to Entoprocta and Ectoprocta. Nature 378: 711–714. DOI: 10.1038/378711a0 Reference page. 
• Gordon, D.P. 2009. 9. Phylum Cycliophora: cycliophorans, pandoras. Pp. 159–160 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume 1. Kingdom Animalia. Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch, New Zealand. ISBN 978-1-877257-72-8 [not known from New Zealand]
• Kristensen, R.M. 2002: An introduction to Loricifera, Cycliophora, and Micrognathozoa. Integrative and comparative biology 42: 641–651. DOI: 10.1093/icb/42.3.641 JSTOR.
• Neves, R.C., Ribeiro da Cunha, M., Funch, P., Wanninger, A. & Kristensen, R.M. (Online First): External morphology of the cycliophoran dwarf male: a comparative study of Symbion pandora and S. americanus. Helgoland Marine Research DOI: 10.1007/s10152-010-0204-5
• Obst, M. & Funch, P. 2006. The microhabitat of Symbion pandora (Cycliophora) on the mouthparts of its host Nephrops norvegicus (Decapoda: Nephropidae). Marine biology 148: 945–951. DOI: 10.1007/s00227-005-0131-1
• Obst, M., Funch, P. & Giribet, G. 2005. Hidden diversity and host specificity in cycliophorans: a phylogeographic analysis along the North Atlantic and Mediterranean Sea. Molecular Ecology 14: 4427–4440. DOI: 10.1111/j.1365-294X.2005.02752.x
• Obst, M., Funch, P. & Kristensen, R.M. 2006. A new species of Cycliophora from the mouthparts of the American lobster, Homarus americanus (Nephropidae, Decapoda). Organisms Diversity & Evolution 6: 83–97. DOI: 10.1016/j.ode.2005.05.001 Reference page. 

• Catalogue of Life: 2012 Annual Checklist
• WoRMS (2010). Cycliophora. Accessed through: World Register of Marine Species on October 16, 2010.