Spengelidae is a family of
worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always).
Worms vary in size from microscopic to over in length for marine polychaete worm ...
s belonging to the class
Enteropneusta
The acorn worms or Enteropneusta are a hemichordate class of invertebrates consisting of one order of the same name. The closest non-hemichordate relatives of the Enteropneusta are the echinoderms. There are 111 known species of acorn worm in ...
, order unknown.
Genera:
* ''
Glandiceps''
Spengel, 1891
* ''
Mazoglossus''
Bardack, 1997
* ''
Schizocardium''
Spengel, 1893
* ''
Spengelia''
Willey, 1898
* ''
Willeyia''
Punnett, 1903
References
{{Taxonbar, from=Q3813791
Enteropneusta