Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Phylum: Gnathostomulida
Ordo: Filospermoidea
Familiae: Haplognathiidae - Pterognathiidae
Filospermoidea is an order within the phylum Gnathostomulida.[1][2][3] Filospermoids are generally longer than gnathostomulids in the order Bursovaginoidea, and have an elongate rostrum.[4] It lives in North America, off the coasts of the southern United States and the Caribbean, primarily in the Gulf of Mexico, as well as in southeastern Denmark.[5]
Classification
The order Filospermoidea contains 29 species in 2 families and 3 genera.[6]
Family Haplognathiidae[1]
Genus Haplognathia
Haplognathia asymmetrica
Haplognathia belizensis
Haplognathia filum (sometimes in Pterognathia)
Haplognathia gubbarnorum (sometimes in Pterognathia)
Haplognathia lunulifera (sometimes in Pterognathia)
Haplognathia rosea (sometimes in Pterognathia)
Haplognathia ruberrima (sometimes in Pterognathia)
Haplognathia rubromaculata (sometimes in Pterognathia)
Haplognathia rufa
Haplognathia simplex (sometimes in Pterognathia)
Family Pterognathiidae[2]
Genus Cosmognathia
Cosmognathia aquila
Cosmognathia arcus
Cosmognathia bastillae
Cosmognathia manubrium
Genus Pterognathia
Pterognathia alcicornis
Pterognathia atrox
Pterognathia crocodilus
Pterognathia ctenifera
Pterognathia hawaiiensis
Pterognathia grandis
Pterognathia meixneri
Pterognathia portobello
Pterognathia pygmaea
Pterognathia sica
Pterognathia sorex
Pterognathia swedmarki
Pterognathia tuatara
Pterognathia ugera
Pterognathia vilii
References
Adiyodi, K. G.; Adiyodi, Rita G (1988). Reproductive Biology of Invertebrates, Accessory Sex Glands (reprint ed.). John Wiley & Sons. pp. 61, 64. ISBN 0471914665. Retrieved 29 November 2018.
Giese, Arthur C.; Pearse, John S. (September 17, 2013). Acoelomate and Pseudocoelomate Metazoans (revised ed.). Elsevier. pp. 345–352. ISBN 1483260550. Retrieved 29 November 2018.
Ax, Peter (December 6, 2012). Multicellular Animals: A new Approach to the Phylogenetic Order in Nature (illustrated ed.). Springer Science & Business Medi. pp. 133–136. ISBN 3642801145. Retrieved 30 November 2018.
Barnes, R.F.K. (2001). The Invertebrates: A Synthesis. Oxford: Blackwell Science.
"Distribution Map: Filospermoidea". Ocean Biogeographic Information System. Retrieved 29 November 2018.
Sterrer, W. (2006). "Filospermoidea". World Register of Marine Species. Retrieved 27 January 2018.
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