{{Short description|Family of marine worm-like animals}} {{Automatic taxobox | image = Enteropneusta.png | image_caption = ''Balanoglossus'' | taxon = Ptychoderidae | authority = | subdivision_ranks = Genera | subdivision = * ''Balanoglossus'' * ''Glossobalanus'' * ''Ptychodera'' }}
'''Ptychoderidae''' is a family of acorn worms.
==Genera and species== The World Register of Marine Species lists the following:<ref>[http://www.marinespecies.org/aphia.php?p=taxdetails&id=2019 Ptychoderidae] World Register of Marine Species. Retrieved 2011-10-17.</ref>
===''Balanoglossus''=== Contains the following species: * ''Balanoglossus apertus'' <small>(Spengel, 1893)</small> * ''Balanoglossus aurantiacus'' <small>(Girard, 1853)</small> * ''Balanoglossus australiensis'' <small>(Hill, 1894)</small> * ''Balanoglossus borealis'' <small>(Willey, 1899)</small> * ''Balanoglossus capensis'' <small>(Gilchrist, 1908)</small> * ''Balanoglossus carnosus'' <small>Müller in Spengel, 1893</small> * ''Balanoglossus clavigerus'' <small>delle Chiaje, 1829</small> * ''Balanoglossus gigas'' <small>Müller in Spengel, 1893</small> * ''Balanoglossus hydrocephalus'' <small>van der Horst</small> * ''Balanoglossus misakiensis'' <small>Kuwano, 1902</small> * ''Balanoglossus natalensis'' <small>(Gilchrist, 1908)</small> * ''Balanoglossus occidentalis'' <small>Ritter, 1902</small> * ''Balanoglossus proterogonius'' <small>Belichov, 1928</small> * ''Balanoglossus robinii'' <small>author unknown</small> * ''Balanoglossus salmoneus'' <small>Belichov, 1928</small> * ''Balanoglossus stephensoni'' <small>van der Horst, 1937</small> * ''Balanoglossus studiosorum'' <small>van der Horst</small>
===''Glossobalanus''=== Contains the following species: * ''Glossobalanus alatus'' <small>van der Horst</small> * ''Glossobalanus barnharti'' <small>Cameron & Ostiguy, 2013</small><ref name=C&O13>{{cite journal | journal = Zootaxa | volume = 3630 | year = 2013 | pages = 143–154 | title = Three new species of ''Glossobalanus'' (Hemichordata: Enteropneusta: Ptychoderidae) from western North America | url= http://www.mapress.com/zootaxa/2013/f/z03630p154f.pdf |last1=Cameron |first1=Christopher B. |last2=Ostiguy |first2=Angélica | doi=10.11646/zootaxa.3630.1.5| pmid = 26131502 }}</ref> * ''Glossobalanus berkeleyi'' <small>(Willey, 1931)</small> * ''Glossobalanus crozieri'' <small>van der Horst, 1924</small> * ''Glossobalanus elongatus'' <small>Spengel, 1904</small> * ''Glossobalanus hartmanae'' <small>Cameron & Ostiguy, 2013</small><ref name=C&O13/> * ''Glossobalanus hedleyi'' <small>(Hill, 1897)</small> * ''Glossobalanus indicus'' <small>Rao, 1955</small> * ''Glossobalanus marginatus'' <small>Meek, 1922</small> * ''Glossobalanus minutus'' <small>Kowalevsky, 1866</small> * ''Glossobalanus mortenseni'' <small>van der Horst, 1932</small> * ''Glossobalanus parvulus'' <small>(Punnett, 1906)</small> * ''Glossobalanus ruficollis'' <small>(Willey, 1899)</small> * ''Glossobalanus sarniensis'' <small>(Koehler, 1886)</small> * ''Glossobalanus williami'' <small>Cameron & Ostiguy, 2013</small><ref name=C&O13/>
===''Ptychodera''=== Contains the following species: * ''Ptychodera bahamensis'' <small>Spengel, 1893</small> * ''Ptychodera ceylonica'' <small>author unknown</small> * ''Ptychodera erythrea'' <small>Spengel</small> * ''Ptychodera flava'' <small>Eschscholtz, 1825</small> * ''Ptychodera pelsarti'' <small>Dakin, 1916</small>
==References== {{Reflist}}
{{Taxonbar|from=Q2805431}} {{Authority control}}
Category:Acorn worms
{{Hemichordate-stub}}